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IAU Information Bulletin No. 78


Preliminary Programme of the XXIIIrd General Assembly, August 18-30, 1997, Kyoto International Conference Hall (KICH), Takaraga-ike, Sakyo-ku, Kyoto 606, Japan


Science Council of Japan & Astronomical Society of Japan


Yoshio Fujita, Chairperson (President of the Japan Academy)
Kenji Akabane (Prof. Emeritus, NAO)	Shinya Obi (President, University of 
                                                       the Air)
Chushiro Hayashi (Prof. Emeritus,	Minoru Oda (Prof. Emeritus, ISAS)
	Kyoto University)	        Yasuo Tanaka (Prof. Emeritus, ISAS)
Yoshihide Kozai (Prof. Emeritus, NAO)


Daiichiro Sugimoto, Chairperson (University of Tokyo)

Satoru Ikeuchi (Osaka University)	Toshio Matsumoto (ISAS)
Masato Ishiguro (NAO-NRO)	        Yoji Osaki (University of Tokyo)
Norio Kaifu (NAO)	                Katsuhiko Sato (University of Tokyo)
Keiichi Kodaira (NAO)	                Humitaka Sato (Kyoto University)
Yoshihide Kozai (NAO)	                Mine Takeuti (Tohoku University)
Fumiyoshi Makino (ISAS)	                Yutaka Uchida (Science University of 


Toshio Fukushima, Chairperson (NAO)

Nobuo Arimoto (University of Tokyo)	Ryusuke Ogasawara (NAO)
Toshihiro Handa (University of Tokyo)	Kouji Ohta (Kyoto University)
Tetsuo Hasegawa (University of Tokyo)	Sadanori Okamura (University of Tokyo)
Shogo Inagaki (Kyoto University)	Kozo Sadakane (Osaka Kyoiku University)
Junji Inatani (NAO-NRO)	                Yoshinori Suematsu (NAO)
Hajime Inoue (ISAS)	                Tomoharu Suzuki (University of Tokyo)
Jun Jugaku (Tokai University)	        Yoshiaki Taniguchi (Tohoku University)
Takeo Kosugi (NAO-NRO)	                Hiroshi Tsunemi (Osaka University)
Hideyo Kunieda (Nagoya University)	Munetaka Ueno (University of Tokyo)
Ken'ichi Nomoto (University of Tokyo)	Jun-ichi Watanabe (NAO)

	NAO:	        National Astronomical Observatory
	NAO-NRO:	Nobeyama Radio Observatory of National Astronomical
	ISAS:	        Institute of Space and Astronautical Science






Calendar of Events:  Symposia, Joint Discussions & Special Sessions  	
Calendar of Events:  Division, Commission & Working Group Meetings  	

Individual programmes  		

Joint Discussions  		
Special Sessions  	


Information on the General Assembly 		

E-Mail Information Service  		


Important Advice  		
Getting to Kyoto  	
Transportation in Japan  		
Transportation in Kyoto City  		
Weather & Clothing  		


Financial support to attend the General Assembly  	
How to Register  	

Reservations for Hotel Accommodation, Social & Cultural Events, & Tours  
Japan Travel Bureau  		
List of Hotels & Hotel Accommodation  	
Social & Cultural Events  	
Programme for Accompanying Persons & Optional Tours  	

General Information on Facilities  	

Venue of the General Assembly  		
Registration desk & general information  	
Travel Desk  	
Banking Facilities  		
Mail Boxes  		
Mail, Phone, Facsimile, & Electronic Mail  		
Daily Newspaper  		
Coffee & Tea Breaks  		
Lunch Facilities  		
Medical Aid  		
Child Care  		

Scientific Presentations  		
Facilities for Oral Presentations  		
Video Presentations  		

Special Pages:

Registration Form

Accommodation & Tour Reservation Form

Grant Application Form



In 1997 the IAU will for the first time organise a General Assembly (GA) in Japan. The venue of this meeting will be the old imperial city of Kyoto. With its exceptional concentration of cultural treasures Kyoto will provide a particularly attractive and pleasant environment for the IAU's XXIIIrd General Assembly.

This Special Issue of the Information Bulletin presents the Preliminary Programme of the XXIIIrd IAU GA, practical information for participants, a form for registration to the meeting, a form for reserving accommodation in Kyoto, and an application form for an IAU travel grant. A limited number of travel grants to attend the XXIIIrd GA will be available for participants who cannot obtain necessary funds from national sources. Those who plan to contribute actively to one of the Symposia should send their grant application to the corresponding Symposium Scientific Organising Committee. Colleagues who plan to participate actively in Joint Discussions, Special Sessions, Divisions, Commissions and Working Groups are requested to send their grant application to the General Secretary. The deadline for grant applications is in both cases February 15, 1997.

With 6 Symposia, 24 Joint Discussions, and 2 Special Sessions, the General Assembly in Kyoto will have an exceptionally rich scientific programme. Although the Secretariate has done its best to keep to a minimum overlaps of meetings with related topics, this large number of scientific sessions resulted unavoidably in some such conflicts. However, we felt that having a few overlaps was preferable to rejecting even more good proposals for Joint Discussions.

Like previous IAU Information Bulletins this Special Issue will appear simultaneously in printed form and in the WWW. The WWW version of the IB will be updated (if necessary) at intervals of about 3 months. The printed version will not be updated. Both versions of this Preliminary Programme will be replaced by the Final Programme of the XXIIIrd IAU General Assembly, which will be distributed to all participants at the registration desk in Kyoto. The Final Programme will also contain a floor plan showing the location of the rooms referred to in this volume.

Updates and more detailed information on the GA can also be found in the GA home page of the Local Organizing Committee and by an electronic mail answering service which will be set up by the LOC (see page 55 of this Bulletin).

I am looking forward to meeting a major fraction of the members of our Union and many personal friends in Kyoto.

September 1996

Immo Appenzeller

General Secretary



Welcome to Japan, and welcome to Kyoto!

In addition to the new style of the General Assembly, which started at the last meeting in The Hague, we have introduced some new features into its operation: 1) WWW, 2) Automatic E-mail Answering Service, 3) Video Poster Papers, and 4) a free Banquet.

The WWW is our major medium to present the practical and scientific information of the General Assembly. We will update and expand it from time to time. The first part is the detailed version of practical information, some parts of which are omitted from the printed version in this issue due to the page allowance. It also includes a number of tips to enhance your stay in Kyoto inexpensively.

The second part deals with abstracts of accepted poster papers, the updated scientific programmes, the floor plan, and other useful information for scientific purpose. The abstracts will appear after the selection by the SOCs around next April. We hope to include the abstracts of not only poster papers but also oral presentations as much as possible. As an additional function, we provide an electronic way of registration and hotel/tour reservations on the WWW, starting November 1, 1996. Should you register by the WWW or by e-mail, only credit cards are acceptable.

For those whose network access to Japan is tight, we provide an Automatic E-mail Answering Service. Its details are given in the corresponding section of this issue. This service offers the same facilities as the WWW. You may obtain registration/reservation forms through this service and can send back the forms, once filled in, by e-mail.

For more vivid presentation of your scientific results, we will prepare some video monitors at a corner of the building for poster papers (see the corresponding section of this Information Bulletin for detailed instructions) We will concentrate most of the common facilities,such as exhibitions, mail boxes, communication boards, computer terminals and refreshments in the same building, in order to make this area serve as a place for discussions and exchange of information.

The last point is the rearrangement of the reception and the banquet. Taking into account that there will be two series of Symposia, the reception will take place in the first week whereas the banquet will be in the second week. Both events are free of charge, in order to to offer the chance to most participants to get together in a friendly atmosphere.

The Japanese astronomical community is eagerly looking forward to seeing all of you in Kyoto. We hope all the participants enjoy this General Assembly as well as the cultural treasures and beauties of Kyoto.

With best regards,


Chairperson of the LOC




Submission of poster abstracts	February 15, 1997
Grant applications	February 15, 1997
Early registration	April 30, 1997
Hotel/Tour reservation	June 30, 1997
Registration by Mail/Facsimile/E-mail/WWW	July 15, 1997


For inquiries concerning the XXIIIrd General Assembly in general and the
Scientific Programme, please contact:

Prof. Immo Appenzeller, General Secretary	Telephone:  33 1 43 25 8358
International Astronomical Union (IAU)	Facsimile:  33 1 43 25 2616
98 bis, bd Arago, F 75014 Paris, France	E-mail:  iau@iap.fr

For all inquiries concerning registration and local arrangements in Kyoto
except hotel/tour reservations, please contact:

Prof. T. Fukushima, Chair	Telephone:  81 422 34 3027
Local Organizing Committee, 	Facsimile:  81 422 34 3027
the XXIIIrd General Assembly of the IAU	E-mail:  iau97@tenmon.or.jp
National Astronomical Observatory
2-21-1, Ohsawa, Mitaka, Tokyo 181, Japan

For all inquiries concerning hotel/tour reservations in Kyoto, please=

Japan Travel Bureau, Inc.	Telephone:  81 3 5620 9429
International Travel Division	Facsimile:  81 3 5620 9499
Convention Center (CD100993-543)	E-mail will be available after November 1,=
5-5-2, Kiba, Koto-ku, Tokyo135, Japan



JD   1	The Hubble Deep Field	R.E. Williams
JD   2	The Cataclysmic Variable Stars 	B. Warner
JD   3	Black Holes in the Universe	I.D. Novikov


S 183	Cosmological Parameters and the Evolution of the Universe  
S 184	The Central Regions of the Galaxy and Galaxies  		
S 185	New Eyes to see Inside the Sun and Stars:  		
	Pushing the Limits of Helio- and Asteroseismology with
	New Observations from Ground and from Space
S 186	Galaxy Interactions at High and Low Redshift  		
S 187	Cosmic Chemical Evolution  		
S 188	The Hot Universe  		


JD   1	Abundance Ratios in the oldest Stars:  Bulge and extreme Halo  	
JD   2	Dwarf Galaxies:  Probes for Galaxy Formation and Evolution  	
JD   3	Precession-Nutation and Astronomical Constants  		
JD   4	Challenges in Atomic Physics for Cosmic X-Ray Spectroscopy  	
JD   5	Preserving of the Astronomical Windows  		
JD   6	Interactions between Planets and Small Bodies  	
JD   7	The New International Celestial Reference Frame  		
JD   8	Stellar Evolution in Real Time  	
JD   9	Future Large Scale Facilities in Astronomy  	
JD 10	Low-Luminosity Stars  		
JD 11	Redshift Surveys in the 21st Century  		
JD 12	Electronic Publishing:  Now and the Future  		
JD 13	Detection and Study of Planets outside the Solar System  	
JD 14	The first Results of Hipparcos and Tycho  		
JD 15	The Combination of Theory, Observation, and Simulation  	
	for the Dynamics of Stars and Star Clusters in the Galaxy
JD 16	Spectroscopy with Large Telescopes of Chemically Peculiar Stars 
JD 17	History of Oriental Astronomy  		
JD 18	High Energy Transients  		

JD 19	Physics of the Sun and Heliosphere in the Era of Space Probes:  
	Scientific Highlights of ULYSSES, SOHO, and YOHKOH
JD 20	Enhancing Astronomical Research and Education in Developing Countries
JD 21	The Megamaser - AGN Connection  		
JD 22	Astronomy from the Moon  		
JD 23	The Leonid Meteor Storms:  Historical Significance  		
	and Upcoming Opportunities
JD 24	Pulsating Stars - Recent Developments in Theory and Observation  


SPS 1	Main Issues of the Galileo Mission to the Jupiter System  	
SPS 2	Highlights of the ISO Mission  		

CALENDAR OF EVENTS: Symposia, Joint Discussions & Special Sessions


	Room	   H     A	B1	B2	C1	C2	D	E
Date	Time								
Aug. 18	14-15.30	S183	S184				S185	
(M)	16-17.30	S183	S184				S185	
Aug. 19	9-10.30	        S183	S184				S185	
(Tue)	11-12.30	S183	S184				S185	
	14-15.30	S183	S184				S185	
	16-17.30	S183	S184				S185	
Aug. 20	9-10.30	        S183	S184				S185	
(W)	11-12.30	S183	S184				S185	
	14.00	General Assembly - Main Hall				
Aug. 21	9-10.30	        S183	S184	SPS 1	JD 2	JD 3	S185	JD 1
(Th)	11-12.30	S183	S184	SPS 1	JD 2	JD 3	S185	JD 1
	14-15.30	S183	S184	SPS 1	JD 2	JD 3	S185	JD 1
	16-17.30	S183	S184	SPS 1	JD 2	JD 3	S185	JD 1
	18.15	Invited Discourse 1 - Main Hall				
Aug. 22	9-10.30	        S183	S184	JD 5	JD 4	JD 7	S185	JD 6
(F)	11-12.30	S183	S184	JD 5	JD 4	JD 7	S185	JD 6
	14-15.30	JD 8	JD 10	JD 5	JD 4	JD 7		JD 6
	16-17.30	JD 8	JD 10	JD 5	JD 4	JD 7		JD 6
	18.15	Invited Discourse 2 - Main Hall				
Aug. 23	9-10.30	        JD 8	JD 10	JD 5	JD 4	 	JD 9	JD 6
(Sa)	11-12.30	JD 8	JD 10	JD 5	JD 4	 	JD 9	JD 6
	14-15.30						JD 9	
	16-17.30						JD 9	
Aug. 25  9-10.30 JD 17	SPS 2	JD 13	JD 12	JD 15	JD 16	JD 11	JD 14
(M)	11-12.30 JD 17	SPS 2	JD 13	JD 12	JD 15	JD 16	JD 11	JD 14
	14-15.30 JD 17	SPS 2	JD 13	JD 12	JD 15	JD 16	JD 11	JD 14
	16-17.30 JD 17	SPS 2	JD 13	JD 12	JD 15	JD 16	JD 11	JD 14
Aug. 26	9-10.30	 JD 17  JD 21	JD 13	JD 18	JD 20	JD 24		JD 19
(Tue)	11-12.30	JD 21	JD 13	JD 18	JD 20	JD 24		JD 19
	14-15.30	S187	S186	JD 18	JD 20	JD 24	S188	JD 19
	16-17.30	S187	S186	JD 18	JD 20	JD 24	S188	JD 19
	18.15	Invited Discourse 3 - Main Hall				
Aug. 27	9-10.30	        S187	S186	JD 18	JD 22	JD 23	S188	JD 19
(W)	11-12.30	S187	S186	JD 18	JD 22	JD 23	S188	JD 19
	14.00	General Assembly - Main Hall				
Aug. 28	9-10.30	        S187	S186				S188	
(Th)	11-12.30	S187	S186				S188	
	14-15.30	S187	S186				S188	
	16-17.30	S187	S186				S188	
Aug. 29	9-10.30	        S187	S186				S188	
(F)	11-12.30	S187	S186				S188	
	14-15.30	S187	S186				S188	
	16-17.30	S187	S186				S188	
Aug. 30	9-10.30	        S187	S186				S188	
(Sa)	11-12.30	S187	S186				S188	

CALENDAR OF EVENTS: Division, Commission & Working Group Meetings


	Room	       F	G	H	I	J	K      Other
Aug. 20	9-10.30	     WGPSN				     EC+DPs
(W)	11-12.30     WGPSN				     EC+DPs   40(B2),
                                                                      34 (E)

	Lunch							   Div.II (C2)
	14.00	General Assembly - Main Hall			     
Aug. 21	9-10.30		        5 WG  			45 WG	CPs	
(Th)	11-12.30	46	5 WG   9 WG	20 			
	14-15.30	51	5 WG 	14	22	37	30	
	16-17.30	9	5 WG 	14	22	37	30	
Aug. 22	9-10.30	        25	5	 	45	36		
(F)	11-12.30	26			45	36		
	14-15.30	9 WG	38	41 	45     WGDAA		
	16-17.30	9 WG		41	45     WGDAA		
Aug. 23	9-10.30	        19	8	24	6	45 WG	   Div.II (C2)
(Sa)	11-12.30	19	8/24	44		21	     VIII (C2)
Aug. 25	9-10.30	        15	28	 	50	40	NR/NC/	
(M)	11-12.30	46	35	 	WGFLSF	40	F C	
	14-15.30			 			C Ps	
	16-17.30		27	 				
Aug. 26	9-10.30	        51	8/24	 	20 WG	21	31     47 (D)
(Tue)	11-12.30	4	8/24	41	20 WG	33	31	 
	14-15.30	19 WG	7	16	20 WG	45 WG	31	
	16-17.30	19 WG	7	16	20	40	31	
Aug. 27	9-10.30	      VLBI WG	5	27 WG		42	34	
(W)	11-12.30      URSI WG	25	29		42	27	
	14.00	General Assembly - Main Hall				

EC:	Executive Committee			
CP:	Commission President			
NC:	Nominating Committee			
DP:	Division President			
NR:	National Representative			
FC:	Finance Committee			
WG:     Working Group




Supporting Commissions:  47 (Cosmology)
Co-Supporting Commissions:  28 (Galaxies) & 44 (Space & High Energy

SOC:  R. Ellis (UK), W. Freedman (USA), K. Freeman (Australia), D. Mathewson
(Australia), J.V. Narlikar (India, Co-Chair), R.B. Partridge (USA), K. Sato
(Japan, Chair) A.A. Starobinsky (Russia), A. Szalay (Hungary), G.A. Tammann
(Switzerland) & J. Truemper (Germany)

Contact address:  K. Sato, Dept. Physics, School of Science, The University
of Tokyo, Bunkyo-ku, Tokyo 113 Japan, Facsimile:  81 3 5689 0465, E-mail:

Each day there will be plenary review talks on topics of current interest
and workshops focussed on specific areas. The broad distribution by subject
and day is outlined below:

Monday August 18 afternoon:  Session I

Measurements of Hubble's constant
Galaxy counts and radio source counts
Gravitational (weak) lensing by clusters

Tuesday August 19 morning:  Session II

Workshop on Large Scale Observations of Discrete Sources.  May include
invited contributions on correlation functions, chemical evolution, x-rays
from clusters, abundance determination of light nuclei.

Tuesday August 19 afternoon:  Session III

Stellar and galactic ages
IGM and Gunn-Peterson effect
Density of hot gas in clusters
Anisotropies of MBR
Future studies of MBR
Observational constraints on models of large scale structure

Wednesday August 20 morning:  Session IV

Workshop on Dark Matter and Structure Formation. May include invited
contributions on MACHOs etc., laboratory searches and bounds on dark matter
candidates, theoretical approaches to structure formation.

Thursday August 21 morning :  Session V

Objects of large redshifts
Redshift surveys
Constraints on parameters of standard models
The cosmological constant
Alternative cosmologies

Thursday August 21 afternoon:  Session VI

Workshop on Cosmological Models. May include invited talks on inflation and
observable relics, phase transitions and topological structures,
astrophysical issues relating to various cosmologies.

Friday August 22 morning:  Session VII

Summary Talks:  One on theoretical aspects and one on the observational
Panel Discussion on The Standard Cosmology:  Strengths, weaknesses and


Supporting Commission:  40 (Radio Astronomy)
Co-Supporting Commissions:  28 (Galaxies) & 33 (Structure & Dynamics of
Galactic Systems)

SOC:  J. Binney (UK), F. Combes (France), R. Genzel (Germany, Co-Chair), J.
Kormendy (Canada), R.P. Kraft (USA), M. Morris (USA,Co-Chair), N. Scoville
(USA), Y. Sofue (Japan, Chair) & M. Tsuboi (Japan)

Contact address:  Dr. Yoshiaki Sofue, Institute of Astronomy, University of
Tokyo, Mitaka, Tokyo 181, Japan, Telephone:  81 422 34 3734, Facsimile:  81
422 34 3749, E-mail:  sofue@mtk.ioa.s.u-tokyo.ac.jp or

Monday August 18 afternoon:  Session 1:  Star Clusters and Star Formation

Galactic Center star clusters
Nuclear star clusters in galaxies
Evolution and dynamics of dense star clusters

Tuesday August 19 morning:  Session 2:  Star Clusters and Star Formation=

Galactic bulges:  Structure and evolution
Star formation

Tuesday August 19 afternoon:  Session 3:  Nuclear Interstellar Medium

Neutral ISM in the Galactic Center
Molecular gas in nuclei of galaxies
Evolution of nuclear gas

Wednesday August 20 morning:  Session 4:  Nuclear Interstellar Medium (cntd)

Rotation and kinematics of the nuclear gas disks
Gas dynamics in the central pc to kpc
Bars and shocks
Angular momentum and accretion

Thursday August 21 morning:  Session 5:  Nuclear Interstellar Medium (cntd)

Magnetic phenomena
High-energy phenomena
Outflow and circulation

Thursday August 21 afternoon:  Session 6:  Black Holes and Central Activity

Black holes in galaxies
The case for a black hole in the Milky Way center

Friday August 22 morning:  Session 7:  Black Holes and Central Activity 

Circum-nuclear mass distribution and kinematics
Formation and evolution of black holes
Black hole powering of central activity


Supporting Divisions:  II (The Sun and the Heliosphere), IV (Stars)
Supporting Commissions:  10 (Solar Activity), 12 (Solar Radiation and
Structure) & 27 (Variable Stars)
Co-Supporting Commissions:  25 (Stellar Photometry and Polarimetry), 36
(Theory of Stellar Atmospheres)

SOC:  K. Chitre (India), J. Christensen-Dalsgaard (Denmark), F.-L. Deubner
(Germany, Chairperson),. Domingo (Netherlands), Y. Elsworth (UK), C.
Froehlich (Switzerland), D. Kurtz (South Africa, Co-Chairperson), J.
Leibacher (USA), J. Provost (France), H. Shibahashi (Japan) & J. Smak

Contact address:  Prof. Franz-Ludwig Deubner, Astronomisches Institut der
Universitaet Wuerzburg, Am Hubland, D 97074 Wuerzburg, Germany,
 Telephone:  49
931 888 5031, Facsimile:  49 931 888 4603, E-mail:

Global Structure and Evolution of the Solar and Stellar Interior

Monday August 18 afternoon:  Session 1

Keynote talk - New Developments in Helioseismology	D.O. Gough (UK)*
What data are needed to see inside the Sun and stars?	Y. Elsworth (UK)
Data analysis strategies	F. Hill (USA)
Internal rotation, mixing, and the lithium-abundance	B. Chaboyer (Canada)

Tuesday August 19 morning:  Session 2

Solar convection zone and radius	R. Ulrich (USA)
Stellar convective cores	I. Roxburgh (UK)
Solar irradiance variations	C. Froehlich (Switzerland)
Solar irradiance (theory)	H. Spruit (Germany)

Large Scale Structure of the Sun

Tuesday August 19 afternoon:  Session 3

Inversion methods	M. Thompson (UK)
Inversion of solar structure	S. Vauclair (France)
Internal rotation and large scale flows	J. Schou (USA)


Keynote talk - New Developments in Asteroseismology	D. Kurtz (South Africa)

Solar Small Scale Structure

Wednesday August 20 morning:  Session 4

Time-distance analysis	T. Duvall (USA)
Magnetoseismology	P. Goode (USA)
Sunspot seismology	D. Braun (USA)
Interaction of convection and oscillations	P. Kumar (USA)
Excitation and damping of solar oscillations	A. Nordlund (Denmark)

Asteroseismology (contd.)

Thursday August 21 morning:  Session 5

Theoretical aspects in asteroseismology 	J. Christensen-Dalsgaard (Denmark)
White Dwarfs and pre-White Dwarfs - observations	J. Clemens (USA)
White Dwarfs - theory	S. Kawaler (USA)
roAp stars - observations	J. Matthews (Canada)
roAp stars - theory	A. Gautschy (Germany)
Detection and/or attempted detection of solar-type oscillations	T. Bedding

Thursday August 21 afternoon:  Session 6

( Scuti stars - observations	M. Breger (Austria)
( Scuti stars - theory	J. Guzik (USA)
Discovery of g-mode pulsations in ( Dor stars	K. Krisciunas (USA)
B Star pulsation - observational evidence	D. Baade (Germany)
B Star pulsation - theory and seismological prospects	W. Dziembowski
Observations of 72 beat Cepheids discovered with MACHO 	D. Welch (Canada)
EC14026 stars - pulsating hot subdwarfs	D. Kilkenny (South Africa)
Impact of HIPPARCOS on asteroseismology	(TBA)

Solar Atmosphere, and Synthesis of the Symposium

Friday August 22 morning:  Session 7

CO-diagnostics and the temperature structure of the atmosphere 	T. Ayres
High frequency (pseudo-) modes	S. Jefferies (USA)
Phase relations of line shifts and intensity fluctuations	F.-L. Deubner
The New Chromosphere - simulations	M. Carlsson (Norway)
Meeting Summary:  Synthesis of solar-stellar seismology	(TBA)

*	Speaker to be confirmed


Supporting Commission:  28 (Galaxies)
Co-Supporting Commissions:  33 (Structure & dynamics of the galactic
system), 34 (Interstellar matter), 37 (Star clusters & Associations) & 44
(Space & high energy astrophysics)

SOC:  J. Barnes (USA), F. Combes (France), G. Efstathiou (UK), R. Ellis
(UK), K. Freeman (Australia), I. Karachentsev (Russia), I. Mirabel (France),
M. Noguchi (Japan), D. Sanders (USA, Chair), F. Schweizer (USA), J.
vanGorkom (USA), V. Trimble (IAU) & S. White (Germany)

Contact address:  D. B. Sanders, Institute for Astronomy, University of
Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA, Telephone:  1 808 956
5055, Facsimile:  1 808 956 9580, E-mail:  sanders@ifa.hawaii.edu

The emphasis of this Symposium will be on the large body of new
ground-based and spacecraft observations which implicate
interactions/mergers  in galactic activity (starbursts and AGN) and galaxy
evolution, and on the  latest theoretical models which unify these
apparently diverse phenomena.  The  basic theme will be the development of a
new cosmological perspective on  interacting galaxies, tracing the effects
of interactions/mergers from the  current epoch back toward high redshifts.

Tuesday August 26 afternoon

Session 1:  Overview

Introductory remarks
Overview of Interactions at Low-z
Overview of Interactions at High-z
Interacting/Peculiar Galaxies - Past Definitions

Session 2:  The Local Group (z =3D 0)

Formation of the Local Group
Dynamics of the Magellanic system
Nature & fate of the Sagittarius dwarf
Moving groups in the Galactic halo
Kinematics of stellar halos
The M81 group at 21 cm

Wednesday August 27 morning

Session 3:  Tidal Interactions

Bridges & Tails
Dwarf galaxies in tidal tails
Return of material from tails
Interaction signatures in HI
Extended gas in interacting systems
Rings and embedded disks

Session 4:  Mergers & Spheroids

Structure of normal ellipticals
Dynamics of merger remnants
Shells, ripples & plumes
Globular clusters in ellipticals
Counter-rotating cores
E+A Galaxies

Thursday August 28 all day

Session 5:  Starbursts (Global & Local)

Gas Dynamics in Mergers
Molecular gas in starbursts
Evolution of starburst populations
Young clusters in merging galaxies
Evolution of globular cluster systems
X-ray observations of starbursts

Session 6:  Nuclear Activity

Luminous infrared galaxies
Surveys of QSOs/Hosts
Surveys of radio galaxies
Fueling requirements for AGNs
Molecular gas in AGNs
Superwinds from starburst galaxies
Metal enrichment of the IGM

Session 7:  Clusters

Butcher-Oemler galaxies
Interactions in distant clusters
ROSAT studies of clusters & groups
ASCA observations of clusters
Cluster & group evolution
Compact Groups

Friday August 29 all day;  Saturday August 30 morning

Session 8:  Deep Fields

Morphology of galaxies in the HDF/MDS
The HDF/MDS - Spectroscopy
Faint Blue Galaxies
Deep/Ultradeep-field observations
The high-z population of galaxies
Interpretation of number counts in Deep Fields

Session 9:  Galaxy evolution with Redshift

Morphology of field galaxies versus redshift
Molecular Gas at High-z
Theory of Star Formation & QSO Abs. Lines
Mergers and hierarchical galaxy formation - theory
Mergers and hierarchical galaxy formation - models

Session 10:  Prospects & Theoretical Perspectives

Interactions, activity, and galactic evolution
Beyond the HDF -- the NGST

The proposed format of the meeting would include invited talks/reviews for
most of the major topics listed above plus some contributed talks.  Ample
space will be allowed for poster contributions.  In addition to all oral
contributions, an attempt will be made to include poster abstracts in the
published proceedings.


Supporting Commission:  28 (Galaxies)
Co-Supporting Commissions:  29 (Stellar Spectra), 35 (Stellar Constitution)
& 47 (Cosmology)

SOC:  J. Audouze (France), J. Bergeron (France), M. Fall (USA), B.
Gustafsson (Sweden), S. Lilly (Canada), F. Matteucci (Italy), K. Nomoto
(Japan, Co-Chairperson), B. Pagel (Denmark), M. Pettini (UK), J. Truran
(USA, Co-Chairperson) & S. White (Germany)

Contact Address:  James W. Truran, Department of Astronomy and Astrophysics,
University of Chicago, 5640 S. Ellis Avenue, Chicago, IL 60637, USA,
Telephone:  1 312 702 9584 (direct) or 1 312 702 2503 (secretary),
Facsimile:  1 312 702 6645, E-mail:  truran@nova.uchicago.edu

Tuesday August 26 afternoon:  Session 1:  Pre-Galactic Nucleosynthesis

Overview: The Abundance History of the Universe  J. Truran (USA) 
Big-Bang nucleosynthesis	D. Schramm (USA)
The Nature of a Population III	J. Ostriker (USA)
Galaxy formation	S. White (Germany)

Wednesday August 27 morning:  Session 2:  Stellar Evolution and

Nucleosynthesis in red giant stars	I. Iben (USA)
Nucleosynthesis in SNe Ia	K. Nomoto (Japan)
Nucleosynthesis in SNe II	S. Woosley (USA)
Light slement synthesis in the galaxy	N. Prantzos (France)

Thursday August 28 morning:  Session 3:  Abundances in Stars and Galaxies

Abundances in halo population stars	C. Sneden (USA)
Abundances in bulge stars	M. Rich (USA)
Abundances in the galactic disk	B. Edvardsson (Sweden)
Abundances in nearby galaxies	S. Faber (USA)

Thursday August 28 afternoon:  Session 4:  Abundances in Cluster Gas and QSO

Gas phase abundances in clusters	T. Ohashi (Japan)
Evolution of Cluster Gas
Abundances in damped Lyman-Alpha systems
Dust Signatures in damped Lyman-Alpha System Abundances	  M. Petttini (UK)

Friday August 29 morning:  Session 5:  Galaxies at Significant Redshift

The Evolution of Galaxies at z=1 
Morphological Evolution of Galaxies
Galaxy evolution at high redshifts	L. Cowie (USA)
Stellar population synthesis models	S. Charlot (USA)

Friday August 29 afternoon: Session 6:  Galaxy Formation and Evolution

QSO Absorbers and Galaxy Formation
Formation of Star Clusters
Chemical Evolution of Galaxies          F. Matteucci (Italy)
Evolution of Stellar Populations in our Galaxy

Saturday August 30 morning:  Session 7:  Cosmic Chemical Evolution

Global approaches to galactic chemical evolution	M. Fall (USA)
Evolution of Damped Lyman-Alpha Galaxies
Summary                                                 B. Pagel (Denmark)

Summary	B. Pagel (Denmark)


Supporting Commission:  44 (Space & High Energy Astrophysics)
Co-Supporting Commissions:  14 (Atomic & Molecular Data), 26 (Double &
Multiple Stars)*, 28 (Galaxies), 34 (Interstellar Matter)*, 35 (Stellar
Constitution)*, 36 (Theory of Stellar Atmospheres)* & 42 (Close Binary
Stars).  (* :  TBC)

SOC:  K. Koyama (Japan, Chair), A. Fabian (UK), N. Gehrels (USA), G.
Hasinger (Germany), D. Leahy (Canada), E. Meurs (Ireland), T. Montmerle
(France), F. Pacini (Italy), R. Pallavicini (Italy), A. Parmar
(Netherlands), R. Sunyaev (Russia) & J. Swank (USA)

Contact address:  Dr. Katsuji Koyama, Department of Physics, Graduate School
of Science, Kyoto University, Sakyo-ku, Kyoto, 606 Japan, Telephone:  81 75
753 3833, Facsimile:  81 75 701 5377, E-mail: 

Tuesday August 26 afternoon

Opening talk
Overview of the Hot Universe

Session 1:  Plasma and Fresh Nucleosynthesis Phenomena

1-1. Sun and stars

Dynamics of solar flares and coronae	S. Tsuneta (Japan)
Theory of flares and MHD jets	TBA
X-ray coronae from stars	TBA
New quest for X-rays from young stellar objects	T. Montmerle (France)

1-2. Novae, supernova remnants and Galactic hot plasma

Atomic abundance in non-equilibrium plasma of SNRs 	H. Tsunemi (Japan)
Shock acceleration in shell-like SNRs	R. Petre (USA
Astrophysical plasma and atomic processes	TBA
Hot plasma in the Galaxy	S. Yamauchi (Japan)
X-ray and (-ray emissions from supernova explosions	K. Nomoto (Japan)
26Al (-rays in the Galaxy	TBA
Nuclear (-rays from Orion	TBA

Wednesday August 27 morning

1-3. Galaxies and their clusters

Abundance problems in galaxy hot plasmas	M. Loewenstein (USA)
Hot gaseous halo in elliptical and spiral galaxies	TBA
Hot gas in groups and their galaxies	T. Ponman (UK)
Spatial distribution of temperature and abundances in clusters	TBA
Iron abundance in distant clusters	TBA

Thursday August 28 morning

Session 2:  Future Space Programs

Recent results from  SAX	TBA
Status report of ASTRO-E	Y. Ogawara (Japan)
	ABRIXAS	G. Hasinger (Germany)
	Spectrum X-Gamma
Visions of high-energy missions beyond the current program	M. Elvis (USA)

Thursday August 28 afternoon

Session 3:  Diagnostics of High Gravity Objects with X- and Gamma-rays

3-1. White dwarf and neutron star binaries

Mass determination of accreting magnetic white dwarfs 	M. Ishida (Japan)
	with hard X-ray spectroscopy
Photoionized plasmas in high-mass X-ray binaries	F. Nagase (Japan)
Spectral properties of low-mass X-ray binary systems	N. White (USA)
(-ray emission theory of isolated pulsars	TBA
Binary structure of accreting neutron stars	D. Leahy (Canada)
X-rays and (-rays from isolated neutron stars	D. Thompson (USA)

Friday August 29 morning:

Millisecond time variations of X-ray binaries	J. Swank (USA)
Type I and Type II bursts :  New results from GRO J1744-28	W. Lewin (USA)

3-2. Black hole binaries
Super-Eddington sources and super soft sources	TBA
High energy aspects of Galactic black hole candidates	TBA
Superluminal sources as observed in Radio,	P. Durouchoux (France)
	X-ray and Gamma-rays
X-ray spectrum of Cyg X-1 in the high state

Friday August 29 afternoon

3-3. AGNs

Advection-dominated disks	TBA
Evidence for strong gravity in the AGN Plasma	A. Fabian (UK)
X-ray aspects of the IRAS galaxies	E. Meurs (Ireland)
(-rays from AGNs	N. Gehrels (USA)
Extreme high energy emission from astronomical	T. Kifune (Japan)
	objects and its emission mechanisms
High energy phenomena in AGN jets	F. Takahara (Japan)

3-4. Gamma-ray bursts

Gamma-ray burst observation from CGRO 	G. Fishman (USA)
X-ray identifications of Gamma-ray burst sources	T. Murakami (Japan)
Gamma-ray burst theory  	D. Hartmann (USA)

Saturday August 30 morning

Session 4:  Large Scale Hot Plasmas and their Relation with Dark Matter

Cooling flows in clusters of galaxies	C. Sarazin (USA)
New aspects of hot gas in galaxy clusters	R. Mushotzky (USA)
Structure and evolution of clusters of galaxies	TBA
Hierarchical structure of dark matter	K. Makishima (Japan)
Sunyaev-Zel'dovich clusters	J. Hughes (USA)
Large scale structure in X-rays	TBA



Supporting Division:  IV (Stars)
Supporting Commission:  29 (Stellar spectra)
Co-Supporting Commissions:  28 (Galaxies), 36 (Theory of stellar
atmospheres), 37 (Stellar clusters and associations)

SOC:  N. Arimoto (Japan), T. Beers (USA), M. Bessell (Australia), J.
Bergeron (Germany), R. Cayrel (France), G. Gilmore (UK), B. Gustafsson
(Sweden), F. Matteucci (Italy), P. Nissen (Denmark), & M. Rich (USA)

Contact Address:  Beatriz Barbuy, U. Sao Paulo, CP 9638, Sao Paulo
01065-970, Brazil, Telephone:  55 11 5778599 ext.:  230, Facsimile:  55 11
2763848/55 / 11 88 48550/55 / 11 577 8599, E-mail:  barbuy@vax.iagusp.usp.br
or barbuy@atmos.iagusp.usp.br or barbuy@astro1.iagusp.usp.br

Thursday August 21 morning:  Abundances in Old Stars

Abundance ratios in the most metal-poor field stars - talk 1,2	TBA
Abundance ratios in metal-poor globular clusters	R. Kraft (USA)*
Survey of metal-poor stars	T. Beers (USA)
Abundances of metal-poor stars and the formation of the halo	R. Cayrel=

Abundances and Element Ratios in the Galactic Bulge:	M. Rich (USA)
	Present Status and Implications for Bulge Formation
Abundance ratios in the most metal-rich disk stars	B. Gustafsson (Sweden)
Abundance ratios in bulge globular clusters	TBA

Thursday August 21 afternoon:  Abundance Ratios:  Chemical Evolution /
Elliptical Galaxies / QSO Absorption Lines

Chemical evolution of the bulge and ellipticals	F. Matteucci (Italy)
Chemical evolution of our Galaxy at the very beginning	N. Arimoto (Japan)

Abundance ratios and star formation histories of E/S0 galaxies	R. Bender
Abundance ratios in elliptical galaxies talk 1,2	TBA
Abundances in quasar absorption line systems	W. Sargent (USA)
talk 2,3	TBA

Summary	D. Lambert (USA)


Supporting Division:  VIII (Galaxies and the Universe)
Co-supporting Division:  X (Radio astronomy)
Supporting Commission:  28 (Galaxies)
Co-Supporting Comission:  40 (Radio astronomy)

SOC:  E. Brinks (Mexico, Chair), N. Brosch (Israel), A. Ferrara (Italy),
K.C. Freeman (Australia), Yu. Izotov (Ukraine), D. Kunth (France), J.-R. Roy
(Canada), E.D. Skillman (USA), T.X. Thuan (USA, Co-Chair)

Contact addresses:  Main contact:  Elias Brinks, Departamento de Astronomia,
Universidad de Guanajuato, Apartado Postal 144, Guanajuato, C.P. 36000,
Mexico, Telephone:  52 473 27155, Facsimile:  52 473 25749. E-mail:
Trinh X. Thuan, Department of Astronomy, University of Virginia, Box 3818,
Charlottesville, VA 22903, USA, Telephone:  1 804 924 4894, Facsimile:  1
804 924 3104, E-mail:  txt@starburst.astro.virginia.edu

Thursday August 21 morning:  Local Group Dwarfs;  Dark Matter

Dwarf Galaxies of the Local Group	P.W. Hodge (USA)
Multi-spectral studies of nearby Dwarf Galaxies	G. Richter (Germany)
Star Formation Histories of nearby Dwarf Irregular Galaxies	E. Tolstoy
Multi-fiber Spectroscopy of nearby dE	T.E. Armandroff (USA)
HI studies of Local Group Dwarfs	K.-Y. Lo (USA)
HI studies of Southern Dwarf Galaxies	W. Walsh (Australia)
Dark Matter in Dwarf Galaxies	C. Carignan (Canada)
Dwarfs in Clusters	M.L. Mateo (USA)
Tidal Dwarfs	I.F. Mirabel (France)

Thursday August 21 afternoon:  Star Formation, History and Evolution

Studies of Virgo Cluster Dwarf Galaxies	E. Almoznino (Israel)
Star Formation Rate and History in Wolf-Rayet Galaxies	W.D. Vacca (USA)
Evolutionary Studies of High M_H/L Galaxies	L. van Zee (USA)
The relation between CO and SF in Dwarf Galaxies	P.M. Gondhalekar (UK)
Are PAH molecules observed in Star-Forming Dwarfs?	D. Kunth (France)
Young Dwarf Galaxies	T.X. Thuan (USA)
Chemo-dynamical evolution of Dwarf Galaxies	G. Hensler (Germany)
Cosmologically distant Bursting Dwarfs - new Keck results 	D.C. Koo (USA)


Supporting Division:  I (Fundamental astronomy)
Supporting Commission:  19 (Rotation of the Earth)
Co-supporting Commissions:  4 (Ephermerides), 5 (Documentation &
astronomical data), 7 (Celestial mechanis), 8 (Positional astronomy), 24
(Photographic astrometry) & 31 (Time)

SOC:  P. Bretagnon (France), V. Brumberg (Russia), N. Capitaine (France), V.
Dehant (Belgium, Chair), T. Fukushima (Japan, Chair), E. Groten (Germany),
H. Kinoshita (Japan), B. Kolaczek (Poland), D.D. McCarthy (USA), P.K.
Seidelmann (USA) & P. Wallace (UK)

Contact address:  V. Dehant, Observatoire Royal de Belgique, Ave. Circulaire
3, B 1180 Bruxelles, Belgium, Telephone:  32 2 373 02 66, Facsimile:  32 2
374 98 22, E-mail:  veroniq@oma.be

Welcome:	V. Dehant (Belgium) & T. Fukushima (Japan)

Thursday August 21 morning:  Session 1

Introductory talk:
	Overview and current situation for precession/nutation	N. Capitaine
The planetary theories and the precession of the ecliptic	P. Bretagnon
The theory of Earth's rotation and the precession-nutation of
         the equator               J. Souchay (France) & H. Kinoshita (Japan)
Fundamental arguments of the current nutation theory	   X.X. Newhall (USA)
Observations of the celestial ephemeris Pole in an inertial frame M. Feissel
Relativistic considerations for precession-nutation	M. Soffel (Germay)
		& S.A. Klioner (Russia)
The best available nutation series from the theoretical	 P.M. Mathews (India)
	and observational point of view	                 & T.A. Herring (USA)

Short presentations of the posters

Thursday August 21 afternoon:  Session 2

Astronomical effects of a change in the precession/nutation model	J.
Kovalevsky (France)
Latest best estimates of astronomical constants	D.D. McCarthy (USA)
SOFA-progress (Standards of Fundamental Astronomy) and plans	P.T. Wallace
GRT-consistent (General Relativity Theory) definitions	V.A. Brumberg (Russia)
	of astronomical constants

Discussion and possible recommendations


Supporting Division:  XI (Space & high energy astrophysics)
Supporting Commission:  44 (Space & high energy astrophysics)
Co-Supporting Commission:  14 (Atomic & molecular data)

SOC:  P. Beiersdorfer (USA), J. Dubau (France), J. Hughes (USA), J. Kaastra
(Netherlands), S. Kahn (USA, Chairperson), E. Kallne (Sweden), F. Keenan
(UK), K. Masai (Japan), H. Mason (UK), A. Mueller (Germany), H. Netzer
(Israel), F. Paerels (USA/Netherlands), A. Pradhan (USA), U. I. Safronova

Contact Adress:  Dr. Frits Paerels, Columbia Astrophysics Laboratory,
Columbia University, 538 W. 120th St., New York, NY 10027, USA, Telephone:
1 212 854 8125, Facsimile:  1 212 854 8121, E-mail:

Friday August 22 morning:  Atomic Processes in Astrophysical Plasmas

Coronal plasmas	G. Doschek (USA)
Photoionized plasmas	G. Ferland (USA)
Nonequilibrium Plasmas	K. Masai (Japan)

Friday August 22 afternoon:  Observational Status of Cosmic X-ray=

Stellar coronae	A. Brown (USA)
Supernova remnants	J. Raymond (USA)
X-Ray binaries	D. Liedahl (USA)
Active galactic nuclei	H. Netzer (Israel)
Clusters of galaxies	R. Mushotzky (USA)
Observational capabilities of AXAF, SXG, XMM, Astro E	F. Paerels (USA)

Atomic Modelling

Presentations of methodology and results from various groups:
A. Pradhan, (USA), M. Klapisch (USA) & H. Mason (UK)

Saturday August 23 morning:  Laboratory Tests

Tokamaks	H.-J. Kunze (Germany)
Ion traps, storage rings	P. Beiersdorfer (USA)
Laser plasmas	S. Rose (UK)

Forum:Chair:  S. Kahn (USA). L. Culhane (UK), W. Goldstein (USA), K.
Makishima (Japan) & H. Schnopper (Denmark).


Supporting Division:  X (Radio astronomy)
Supporting Commissions:  40 (Radio astronomy) & 50 (Protection of existing
and potential observatory sites)
Co-supporting Commissions:  8 (Positional astronomy), 21 (Light of the night
sky), 46 (Teaching of astronomy) & 51 (Bioastronomy:search for
extraterrestrial life)

SOC:  N. Brouillet (France), B. Hidayat (Indonesia), Jingyao Hu (China), S.
Isobe (Japan, Chairperson), K. Mattila (Finland), D. McNally (UK), J. Percy
(Canada), W. Wamstaker (Spain) & J. Whiteoak (Australia)

Contact address:  Syuzo Isobe, National Astronomical Observatory,
2-21-1,Osawa, Mitaka, Tokyo 181, Japan, Telephone:  81 422 34 3645,
Facsimile:  81 422 34 3641, E-mail:  isobesz@cc.nao.ac.jp

Friday August 22 morning

No. 1:  The problem facing observational astronomy

An outline summary accros the field	D. McNally (UK)
Impact on radio astronomy	M. Morimoto (Japan)
Impact on space astronomy	D. Macchetto (USA)
Damage to astronomy education and culture	J. Percy (Canada)

No. 2:  Light pollution

Growth of light pollution at optical and infrared bands	D. Crawford (USA)
Natural optical background	Ch. Leinert (Germany)
Good outdoor lighting design and	K. Narisada (Japan)
	activities of lighting engineering
Bilateral agreements on limits to outdoor lighting	D.A. Schreuder=

Friday August 22 afternoon

No. 1:  Radio interference

US perspective for interference to radio astronomy	T. Gergeley (USA)
European perspective for interference to radio astronomy	H. Kohlmann
Japanese perspective for interference to radio astronomy	M. Ishiguro
Sharing the radio spectrum	J. Cohen (UK)
How can radio astronomy survive?	W. Baan (USA)

No. 2:  Space debris

Space debris-amounts and growth	W. Flury (Germany)
Space debris and astronomy	D. Malin (Australia)
A quantification of space impact on astronomy	S. Tritton (UK)
Space debris and space observatories	H. Yano (Japan)

Saturday August 23 morning

No.1:  Other phenomena and education

Ground and atmosphere	J. Kovalevsky (France)
Prevention of pollution in interplanetary space	C. Keay (USA)
The process of frequency measurement, international treaties
	and responsibility of astronomers	J. Tarter (USA)
Public education to preserve the astronomical windows	W. Sullivan (USA)

No. 2:  The general response

The issues of space debris and near-earth objects at the UN	H. I. Haubold
Bilateral agreements, zoning, international protocol	S. Isobe (Japan)
Loss of investment in facilities	L. Woltjer (France)


Supporting Division:  III (Planetary System Sciences)

Supporting Commission:  16 (Physical Study of Planets & Satellites)

Co-supporting Commissions:  7 (Celestial Mechanics), 15 (Physical Study of
Comets, Minor Planets & Meteorites), 20 (Positions & Motions of Minor
Planets, Comets & Satellites), 22 (Meteors & Interplanetary Dust) & the
WGNEO (Working Group for Near-Earth Objects)

SOC:  M.F. A'Hearn (USA), E.L.G. Bowell (USA), A. Carusi (Italy), S.
Ferraz-Mello (Brazil), M.Ya. Marov (Russia, Chairperson), J. Rahe (USA), H.
Rickman (Sweden, Chairperson), M.J. Valtonen (Finland), I.P. Williams (UK) &
S. Yabushita (Japan)

Contact address:  Dr. Hans Rickman, Uppsala Astronomical Observatory, Box
515, S 75120 Uppsala, Sweden, Telephone:  46 18 51 35 22, Facsimile:  46 18
52 75 83, E-mail:  hans@astro.uu.se

Friday August 22 morning:  Impacts and Solar System Evolution

Cratering in the Solar System	G. Neukum (Germany)
Physics of impacts & crater formation	B.A. Ivanov (Russia)
Icy impacts & the origin of atmospheres	T. Owen (USA)
Comets & the organic origin of life in the Solar System	C. Chyba (USA)
Impact evolution of atmospheres	D. Grinspoon (USA)

Friday August 22 afternoon:  Origin and Dynamics of Planet-Crossing Bodies

Comet showers, mass extinctions & the Galaxy	M. Rampino (USA)
Dynamical constraints on cometary & asteroidal	M.E. Bailey (UK)
	impactor populations
Population & size distribution of domets	J.A. Fernandez (Uruguay)
	in the terrestrial planets zone
Asteroid dynamics	A. Morbidelli (France)
The Kuiper Belt	R. Malhotra (USA)

Saturday August 23 morning:  Observations of Impacts and Impactors

Aspects of the terrestrial influx of small meteoroids	D.I. Steel (Australia)
NEOs, the Spaceguard System & The Spaceguard Foundation	A. Carusi (Italy)
NASA's ground- & space-based efforts	J. Rahe (USA)
The SL-9 impacts -- Effects on Jupiter's atmosphere	D. Hunten (USA)
The SL-9 splitting & impacts -- General Picture	M.F. A'Hearn (USA)

Some time is set aside for contributed papers. Titles and abstracts should
be submitted to H. Rickman (see Contact Address above) before 1 May 1997.


Supporting Division:  I (Fundamental Astronomy)
Supporting Commission:  8 (Positional Astronomy)
Co-Supporting Commissions:  4 (Ephemerides), 7 (Celestial mechanics), 19
(Rotation of the Earth) & 31 (Time)

SOC:  T.E. Corbin (USA), M. Feissel (France), S. Ferraz Mello (Brazil), J.
Kovalevsky (France), I.I. Kumkova (Russia), M. Miyamoto (Japan), L.V.
Morrison (UK, Chairman), E.M. Standish (USA), C. de Vegt (Germany) & J.
Vondrak (Czech Republic)

Contact address:  Dr. L.V. Morrison, Royal Greenwich Observatory, Madingley
Road, Cambridge CB3 0EZ, UK, Telephone:  44 1223 374771, Facsimile:  44 1223
374700, E-mail:  merlp@ast.cam.ac.uk

Friday August 22 morning:  The new International Celestial Reference Frame

Report of the WG Reference 	L.V. Morrison (UK)
Formation of ICRF	M. Feissel (France) & C. Ma (USA)
Optical counterpart of ICRF:  Hipparcos	L. Lindegren (Sweden)
Maintenance of ICRF
	- Radio	T.M. Eubanks (USA)
	- Optical	C. de Vegt (Germany)
	- Radio-Optical link	J. Kovalevsky (France)

Friday August 22 afternoon:  Linking other frames to the ICRF

Linking Tycho to ICRF	E. H=F8g (Denmark)
Linking dynamical reference frame to ICRF	E.M. Standish (USA)
Linking FK5 to ICRF	H. Schwan  (Germany)
Referring Schmidt surveys to ICRF	B. Lasker (USA)
Referring CCD images to ICRF	P.D. Barthel (Netherlands)
IAU Resolution implementing the ICRF


Supporting Division:  V (Variable Stars)
Supporting Commissions:  42 (Close bnary sars) & 27 (Variable stars)
Co-Supporting Divisions:  IX (Optical techniques)
Co-Supporting Commissions:  9 (Instruments and techniques), 25 (Stellar
photometry & polarimetry), 29 (Stellar spectra), 30 (Radial velocities), 35
(Stellar constitution), 41 (History of Astronomy) & 44 (Space & high energy)

SOC:  M. Breger (Austria), E. Guinan (USA, Co-Chair), J. Hearnshaw (New
Zealand), R. Koch (USA, Co-Chair), D. Kurtz (South Africa), C. Maceroni
(Italy), V. Niemela (Argentina), K. Nomoto (Japan), J. Percy (Canada), V.
Trimble (USA), R. Webbink (USA) & E. Zsoldos (Hungary).

Contact Address:  Dr. Edward F. Guinan, Dept. of Astronomy and Astrophysics,
Villanova University, Villanova, PA 19085, USA, Telephone:  1 610 519 4823,
Facsimile:  1 610 519 6132 (University) & 1 610 325 9788 (Home), E-mail:
Robert Koch e-mail:  rhkoch@sas.upenn.edu

Friday August 22 afternoon

Part I - Stellar Evolution- Observation, Theory, and History

Real Time Stellar Evolution:  Brief Introduction	E. Guinan (USA)
Observational Aspects of Stellar Evolution	A. Maeder (Switzerland)
Binary Star Evolution- Observational Aspects	P. Eggleton (UK)
Stellar Evolution from  Historical Data	J. Hearnshaw (New Zealand)
The Problem of "Red" Sirius- Evolutionary or Spurious?	K. Brecher (USA)

Part II - Direct Evidence of Stellar Evolution in Real Time

Evolution of the Crab Nebula and its Pulsar	V. Trimble (USA)
The Remarkable Evolution of the Post-AGB Star FG Sge	J. Jurcsik (Hungary)
		B. Montesinos (Spain)
Supernova 1987A- Ten Years After	K. Nomoto (Japan)
Rapid Evolutionary Changes in the WR Binaries	V. Niemela (Argentina)
HD 5980 and CV Serpentis	S. Shore (USA)
Poster Review	E. Guinan (USA)

Saturday  August 23 morning

Part III - Indirect Evidences of Stellar Evolution:  Period and Luminosity

Period and Mode Changes in Pulsating Stars near the	M. Breger (Austria)
	Main-sequence:  ( Cep and ( Scuti Stars	M. Jerziewicz (Poland)
Evidences of Stellar Evolution in Miras, RV Tauri and	J. Percy (Canada)
	RR Lyrae Stars	P. Whitelock (Soputh Africa)
The Cessation of Pulsations in Polaris	D. Fernie (Canada)
Evolutionary Changes in Luminous Stars	E. Zsoldos (Hungary)

Part III- Continued

Angular Momentum Loss in Close Binaries	A. Lanza (Italy), C. Maceroni=
Evolutionary Changes in Beta Lyrae	P. Harmanec (Czech)

Part IV- Impact of New Technologies on Directly Measuring Stellar Evolution

Impact of New Instruments and Technologies on Observing	D. Kurtz (South=
Stellar Evolution:  Current and Future Expectations	Y. Kondo (USA)

Because of the the severe time limitations of this JD, some important topics
could not be included. To help alleviate this problem and to broaden the
scope of the JD, there will be a poster session connected with this meeting.

Papers are invited on topics that relate to the theme of observational and
theoretical aspects of stellar evolution that can be discerned from the
scrutiny of historical data as well as telescopic observations made over the
last 200 yrs. In particular papers on historic supernovae and novae, the
problem of the "Red Sirius", ( Carinae, P Cygni, and related topics, as well
as solar variability will be especially welcome.  An appreciation of the
poster papers will made during the oral sessions.


Co-supporting Commissions:  9 (Instruments & techniques), 40 (Radio
astronomy) & 44 (Space & high energy astrophysics)

SOC:  H. Butcher (Netherlands, Chairperson), R. Ekers (Australia), R.
Giaconni (Germany), Nan Rendong (China), F. Pacini (Italy), Y. Tanaka
(Japan) & H. Tananbaum (USA)

Contact address:  Prof. Dr. Harvey Butcher, Netherlands Foundation for
Research in Astronomy, P.O. Box 2, NL 7990 AA Dwingeloo, Netherlands,
Telephone:  31 521 59 5100, Facsimile:  31 521 59 7332, E-mail: =

Saturday August 23 morning

Session 1:  Optical/IR ground-based facilities

Review of current large projects	R. Giaconni (Germany)
Status of facilities planned or under discussion:
	Big European Telescope	F. Sanchez (Spain)
	Large Binocular Telescope	P. Strittmatter (USA)

Session 2:  Radio ground-based facilities

Review of current large projects and upgrades	R. Ekers (Australia)
Status of facilities planned or under discussion:
	Milli-meter array	R. Brown (USA)
	Large mm and sub-mm array	M. Ishiguro (Japan)
	Large southern mm array	R. Booth (Sweden)
	Square kilometer array	P. Dewdney (Canada), R. Nan (China)
		G. Swarup (India), H. Butcher (Netherlands)

Saturday August 23 afternoon

Session 3:  New space missions in astronomy

High Energy Facilites	Y. Tanaka (Japan)
UV/Optical/Near-IR Facilities	A. Dressler (USA)
Low Energy Facilities	H. Habing (Netherlands)

Session 4:  Other Large Scale Facilities

Review of other planned facilities- 	M. Longair (UK)
	Facilities arguably needed but as yet unplanned

Session 5:  International Collaboration

Evolving politics of collaboration	F. Praderie (France)


Supporting Division:  VII (The galactic system)

Supporting Commission:  33 (Structure & dynamics of the galactic system)
Co-supporting Commission:  37 (Star clusters & associations)

SOC:  T. Axelrod (Australia),J. Binney (UK, Chairperson), A. Burrows (USA),
G. Da Costa (Australia), M. Grenon (Switzerland), T. Nakano (Japan), M.
Perryman (Netherlands), H. Richer (Canada) & J. Sellwood (USA)

Contact address:  Prof. J.J. Binney, Theoretical Physics, Keble Road, Oxford
OX1 3NP, England, Telephone:  44 1865 273 979, Facsimile:  44 1865 273 947,
E-mail:  binney@thphys.ox.ac.uk

Friday August 22 afternoon

I.  Dynamical constraints

The programme	J. Binney (UK)

Large-scale dynamical constraints on the  mass of the disk	J. Sellwood (USA)
The Oort limit	TBA
Mass constraints from stochastic heating and wide binaries	M. Weinberg (USA)
Results of microlensing surveys	C. Alcock (USA)
Prospects for microlensing surveys	A. Udalski (Poland)
Summary of dynamical constraints on N(M)	N.W. Evans (UK)

II.  Candidate Objects

Main-sequence L(M,age,Z) from models	A. Burrows (USA)
Main-sequence colours as a function of L	M. Grenon (Switzerland)

Saturday August 23 morning

Main-sequence M(L) from binaries	T. Henry (USA)
Ground-based searches for brown dwarfs	C. Tinney (Australia)
Space-based searches for brown dwarfs	J. Bahcall (USA)
Do we expect a feature in ((M) at M=3D0.08 M(?	T. Nakano (Japan)
White-dwarf cooling curves and searches for white dwarfs	M. Wood (USA)
Contribution of white dwarfs to cluster masses	T. von Hippel (USA)

Summary	I.N. Reid (USA)


Supporting Division:  VIII (Galaxies and Cosmology)
Supporting Commission:  28 (Galaxies)
Co-Supporting Comissions:  30 (Radial Velocities) & 47 (Cosmology)

SOC:  M. Colless (Australia), R. Ellis (UK), V. de Lapparent (France), A.
Fairall (South Africa, Co-Chairman), M. Fukugita (Japan), R. Giovanelli
(USA), J. Huchra (USA, Co-Chairman), D. Koo (USA), R.C. Kraan-Korteweg
(France), B. Peterson (Australia), W. Saunders (UK), M. Strauss (USA) & M.
Vogeley (USA).

Contact address:  J. Huchra, OIR, Center for Astrophysics, 60 Garden St,
Cambridge, MA 02138-1516, USA, Telephone:  1 617 495 7375, Facsimile:  1 617
495 7467, E-mail:  huchra@fang.harvard.edu
A.P. Fairall, Dept. of Astronomy, University of Cape Town, Rondebosch, 7700
South Africa. Telephone:  27 21 650 2392, Facsimile:  27 21 650 3352,
E-mail:  fairall@uctvms.uct.ac.za.

Monday August 25 morning

Brief introduction and overview	A. Fairall (South Africa)
The Sloan Digital Sky survey	M. Fukugita (Japan)
The two-degree field z-survey on the	K. Taylor (Australia) & M. Colless
	Anglo-Australian Telescope
The 2MASS survey	J. Huchra (USA)

Monday August 25 afternoon

The Las-Campanas survey	A. Oemler (USA)
The Canada-France redshift survey	S. Lilly (Canada)
Surveys using large-aperture liquid-mirror telescopes	P. Hickson (Canada)
Future trends in instrumentation	D. Fabricant (USA)
Future 21-cm surveys	R. Giovanelli (USA)


Supporting Commission:  5 (Documentation & astronomical data) & Commission 5
Working Group II on information handling
Co-supporting Divisions:  II (The Sun & the heliosphere), IV (Stars), V
(Variable stars) & IX (Optical techniques)
Co-supporting Commissions:4 (Ephemerides), 7 (Celestial mechanics), 10
(Solar activity), 12 (Solar radiation & structure), 14 (Atomic data), 19
(Rotation of the Earth), 24 (Photographic astrometry), 25 (Stellar
photometry & polarimetry) , 28 (Galaxies), 40 (Radio astronomy), 44 (Space &
high energy), 46 (Teaching of Astronomy), 50 (Protection of existing &
potential observatory sites), 51 (Bioastrometry:  Search for
extraterrestrial life)

SOC:  H. Andernach (Spain), P. Boyce (USA), Y Chu (China), B. Corbin (USA),
D. Egret (France), A. G. Hearn (Netherlands, Chairperson), F. Murtagh (ESO),
S, Mitton (UK), S. Nishimura (Japan), R. Norris (Australia) & M. Tsvetkov

Contact adress:  Professor A. G. Hearn, Sterrekundig Instituut, Postbus
80000, NL 3508 TA Utrecht, The Netherlands, Telephone:  31 30 253 5202/253
5200, Facsimile:  31 30 253 5201, E-mail:  ahearn@fys.ruu.nl

Electronic publishing is developing rapidly, and by the time of the General
Assembly at least three major journals will be publishing parallel
electronic versions.  This will bring many benefits and many problems.  The
astrophysical community is faced with decisions about the nature of their
publications in the future.  The Joint Discussion will start with a survey
of thepresent state of affairs.  Among the problems to be discussed will be:
Will the paper journal disappear?  How should we archive the journals?  What
will be the impact on scientists in developing countries?  How can we
exploit the new possibilities for research and education?

Monday August 25 all day

Introduction	A. G. Hearn (Netherlands)
AAS electronic publishing	P. Boyce (USA)
Electronic Publishing outside Astrophysics	S. Mitton (UK)
Archiving	U. Grothkopf (ESO)
Will the classical journal survive?	R. Norris (Australia)
Electronic preprinting	TBA
Impact on developing 	TBA
Panel discussion	A. G. Hearn (Netherlands)


Supporting Division:  III (Planetary system sciences)
Supporting Commission:  51 (Bioastronomy)
Co-supporting Commissions:  9 (Instruments & techniques), 15 (Physical
study of comets, minor planets & meteorites), 16 (Physical study of  planets
& satellites), 24 (Photographic astrometry), 25 (Stellar  photometry &
polarimetry) & 44 (Space & high energy astrophysics)

SOC:  C.J. Cesarsky (France), G.C. Consolmagno (Vatican City), Matsumoto
(Japan), A.J.Penny (UK, Chairperson), M.A.C. Perryman (Netherlands), J.G.
Tarter (USA), H.A. Thronson (USA) & T.C. Owen (USA)

Contact address:  Dr. Alan J. Penny, Rutherford Appleton Laboratory,
Chilton, Didcot, Oxon OX11 0QX, UK, Telephone:  44 1235 44 5675, Facsimile:
44 1235 44 6667, E-mail:  a.j.penny@rl.ac.uk

Monday August 25 morning:  Planet Characterization

Planet formation	TBA
Evolution of planetary atmospheres	T.C. Owen (USA)
Origin of life	TBA
Interplanetary dust around stars	P. Artymowicz (Sweden)
Planet/brown dwarf signatures	R.Brown (USA)
Detection of life	A. Leger (France)

Monday August 25 afternoon:  Searches - I

Radial velocity searches	M. Mayor (Switzerland)
Microlensing searches	TBA
Ground optical interferometry searches	F. Paresce (Germany)
Photometric searches	Borucki (USA)
Ground optical astrometric searches	G. Gatewood (USA)

Tuesday August 26 morning:  Searches - II

Ground radio astrometric searches	D.L. Jones (USA)
MM astrometric searches	R.S. Simon (USA)
Space astrometry searches	M.A.C. Perryman (Netherlands)
Space interferometry searches	J.-M. Mariotti (France)
Searches for intelligent life	J.G. Tarter (USA)


Supporting Division:  I (Fundamental Astronomy)
Supporting Commission:  24 (Photographic Astrometry)
Co-supporting Divisions:  IV (Stars), V (Variable stars), VII (Galactic=
Co-supporting Commissions:  5 (Documentation & astronomical data), 8
(Positional astronomy), 19 (Rotation of the Earth), 20 (Positions & motions
of minor planets, comets & satellites), 25 (Stellar photometry), 26 (Double
& multiple stars), 27 (Variable stars), 29 (Stellar spectra), 33 (Structure
& dynamics of the galactic system), 37 (Star clusters & associations), 42
(Close binary stars) & 45 (Stellar classification).

SOC:  L. Blitz (USA), M. Feast (South Africa), G. Gilmore (UK), M. Grenon
(Switzerland), C. Jaschek (Spain), M. Lattanzi (Italy), A. Maeder
(Switzerland), J. E. Norris (Australia), M.A.C. Perryman (Netherlands) & C.
Turon (France, Chairperson).

Contact address:  Dr. Catherine Turon, Observatoire de Paris-Meudon, F 92195
Meudon Cedex, France, Telephone:  33 1 45 07 7837, Facsimile:  33 1 45 07
7878, E-mail:  catherine.turon@obspm.fr

Monday August 25 morning

1.  Hipparcos and Tycho results

Astrometric results, extragalactic link and results 	L. Lindegren (Sweden)
	on double and multiple stars 	J. Kovalevsky (France)/F. Mignard (France)
Photometric results, calibrations	F. Mignard (France)/ F. van Leeuwen (UK)
	and variability	& M. Grenon (Switzerland)
Results on solar system objects	L. Lindegren (Sweden)/F. Mignard (France)
Tycho results	E. H=F8g (Denmark)/U. Bastian (Germany)

2.  Impact on our knowledge of nearby stars

Stellar interiors and ages: 	A. Baglin (France)
	increased accuracy of absolute magnitude determinations.
	Which consequences on models?

A second review among:  HR diagram and ages;  Luminosity and mass functions;
Stellar masses.

Monday August 25 afternoon

3.  Impact on galactic astronomy and distance scale primary indicators

Galactic evolution:  increased accuracy of distances,	G. Hensler (Germany)
	absolute magnitudes and velocity determinations.
	Which consequences on dynamical/chemical evolution models?

A second review among:  Calibration of "primary" distance indicators;
Cosmological impact of a revised calibration of distances;  Stellar
populations kinematics;  Three dimensional structure and dynamics of nearby
open clusters.

4.  Selected highlights

Selected highlights	M.A.C. Perryman (Netherlands)
Variability statistics before and after Hipparcos  	M. Grenon (Switzerland)
	F. van Leeuwen (UK)

5.  Prospects for microarcsec astrometry	M.A.C. Perryman (Netherlands)
	& L. Lindegren (Sweden)

6.  Conclusion	J. Kovalevsky (France)

A few contributions and many posters are welcome.


Supporting Division:  VII (Galactic system)
Supporting Commissions:  33 (Structure & dynamics of the galactic system) &
37 (Star clusters & associations)

SOC:  L. Athanassoula (France), D. Heggie (UK, Chair), S. Inagaki (Japan),
I. King (USA), J. Makino (Japan), S. McMillan (USA), G. Meylan (Germany, ESO)
& R. Spurzem (Germany)

Contact address:  
Dr. R. Spurzem, Astronomisches Rechen-Institut, Moenchhofstrasse 12-14,
D-69120 Heidelberg, Germany, Phone 49 6221 405 230 (Office) or 
49 6221 405 0 (Switchboard), Email: spurzem@relay.ari.uni-heidelberg.de
WWW: http://www.astrophysik.uni-kiel.de/pershome/supas028/iau.html

Monday August 25 morning

Dynamical simulations:	M. Giersz (UK), D. Heggie (UK)
Methods and comparisons (60 min.)	R. Spurzem (Germany), K. Takahashi

Using GRAPE for N-body simulations (60 min)	S. Aarseth, (UK)*, J. Makino
		M. Taiji (Japan), F. Summers (USA)

Mass functions of Globular Clusters (45 min)	P. Guhathakurta (USA), G.
Piotto (Italy)
		E. Vesperini (USA)
Structure of Globular Clusters (45 min)	D. Merritt (USA), C, Grillmair
		G. Drukier (USA)*

Monday, August 25, afternoon

Binaries in Globular Clusters (60 min)	S. Macmillan (USA), S. Phinney
		C. Pryor (USA), G. Meylan (Germany)

The interface between stellar evolution
	and dynamical evolution (60min)	F. Verbunt (Netherlands), C. Tout (UK)
		D. Chernoff (USA), H.-M. Lee (Korea)

The Galactic Bar (45 min)	J. Binney (UK), O. Gerhard (Switzerland)
		H.-S. Zhao (Germany)

The Galactic Disk (45 min)	E. Athanassoula (France), J. Sellwood (USA)
		S. Tremaine (Canada)*

n.b.:	Each group of speakers will divide up the time and will coordinate
heir talks.
*	Speaker to be confirmed


Supporting Division:  IV (Stars)
Supporting Commissions:  29 (Stellar spectra), 36 (Theory of stellar
tmospheres) & 45 (Stellar classification)
Co-Supporting Commissions:  14 (Atomic and molecular data) & 27 (Variable

SOC:  G. Alecian (France), J. Babel (Germany), M. Gerbaldi (France), R.O.
Gray (USA), G. Mathys (Chile), P. North (Switzerland), M. Takada-Hidai
(Japan, Chairperson) & J. Zverko (Slovakia, Co-Chairperson)

Contact address:  Dr. Masahide Takada-Hidai, Research Institute of
Civilization, Tokai University, 1117 Kitakaname, Hiratsuka, 259-12, Japan,
Telephone:  81 463 58 1211 ext. 4813, Facsimile:  81 463 59 4047, E-mail:

Monday August 25 morning

Basic tools
	Model atmospheres
		LTE models	R.L. Kurucz (USA)
		NLTE models	I. Hubeny (USA)
	Atomic databases
		Observational aspects	D.S. Leckrone (USA)
		Theoretical aspects (OPACITY project)	M.J. Seaton (UK)

Fundamental parameters
	Observational aspects	P. North (Switzerland)
	Theoretical aspects	M. Gerbaldi (France)

Abundance analyses with LTE and NLTE
	LTE and NLTE analyses in CP and normal stars	Y. Takeda (Japan)
	Element distributions in CP star atmospheres	K.C. Smith (UK)

Monday August 25 afternoon

Large scale motions and diffusion processes
	Stellar evolution, particle transport, and the CP phenomena G. Michaud
	Diffusion in CP stars:  The quest for accuracy	G. Alecian (France)
	Radiatively driven winds and diffusion in magnetic CP stars	J. Babel=

Magnetic fields
	Magnetic fields of CP stars diagnosed from	G. Mathys (Chile)
		spectroscopic observations
	Theoretical (modelling) aspects	M. Landolfi (Italy)

	Observational aspects of Lambda Bootis	W. Weiss (Austria)
		and non-magnetic CP stars
	Observational aspects of variabilities of	J. Matthews (Canada)
		magnetic Ap stars
	Theoretical aspects of pulsations of Ap stars	H. Shibahashi (Japan)


Supporting Commission:  41 (History of Astronomy):  a joint commission of
Co-Supporting Commission:  46 (Astronomy Education)

SOC:  S. M. R. Ansari (Chairperson, India), S. D=E9barbat (France), S. J.
Dick (USA, Co-Chairperson), B. Hidayat (Indonesia), O. Gingerich (USA), Y.
Maeyama (Germany), Il-S. Nha (Korea), D. Pingree (USA), Y. Sobouti (Iran) &
Xi Zezong (China)

Contact addresses:  Prof. S. M. R. Ansari, c/o Physics Dept. Aligarh Muslim
University, Aligarh 202002, India, Telephone:  91 571 40 1952 (res.),
Facsimile:  91 571 40 0105, 40 0848 or 40 0466, Telex:  564 230 AMU IN
Dr. S. J. Dick, US Naval Observatory, Washington, DC 20392-5420, USA,
Telephone:  1 202 762 1438, Facsimile:  1 202 762 1461, E-mail:

>Monday August 25 morning:  Sessions I & II

Oriental Astronomy during the Ancient and Medieval Period

Development of Astronomy in Ancient China	Y. Maeyama (Germany)
Islamic Astronomy in in China	B. van Dahlen (Netherlands/Japan)/
An Arabic commentary on al-Tusi's	T. Kusuba (Japan)
	Tadhkirah and its Sanscrit translation
Assimilation of observational instruments 	V.N. Sharma (USA)
	of Islamic Astronomy in Indian Astronomy
Ancient Indian Astronomy in China	J. Xiao-Yuan (China)
Korean Star Maps of the 18th Century	Il-S. Nha (Korea)
Eclipse records in early Korean History: 	F.R. Stephenson (UK)
	The Samguk Sagi and Koryo-sa
Knowledge of Starry Sky and agricultural activities in Indonesia: 	B.
Hidayat (Indonesia)
	A review
The Projection Method of the Star Map	K. Miyajima (Japan)
	in the Song Dinasty

Monday August 25 afternoon:  Session III

Oriental Astronomy during the Ancient and Medieval Period (Cntd)

Astronomical development in the Orient	Kwan-Yu Chen (USA)
	down to the 12th-13th centuries
On the Vedanga Astronomy	Y. Ohashi (Japan)
Spherical trigonometry in the Astronomy of Medieval Kerala School	K.
Plofker (USA)
The solar altitude below horizon at dusk and dawn according 	W. Shou-Xian
	to Ancient Chinese astronomical records
Burmese Star maps	M. Nishiyama (Japan)

Session IV:  Modern Astronomy in the Orient

The Drkpaksasarani:  A Sanskrit version	D. Pingree (USA)
	of de la Hire's Tabulae Astronomicae
Modern Astronomy in Indo-Persian sources	S.M.R. Ansari (India)
Takamine and Saha:  Contacts with western Astrophysics	D.H. DeVorkin (USA)
East Asian historical records and modern Astronomy	Xi Zezong (China)
Astronomy education in the East	S. Isobe (Japan)

Tuesday, August 26, 9:00-10:30:  Session I

Keplers's Laws in China	K. Hashimoto (Japan)
Possible identification of some  periodic comets	Zh. Weifeng (China)
	before AD 1760
Contemporary Astronomy in Iran:  A status report	Y. Sobouti (Iran)
Changing historical trends in Astronomy education	W. Orchiston (New
	in Australia and New Zealand
History of Oriental Astronomy:  An overview	S. Nakayama (Japan)


Supporting Division:  VIII (Space & high energy astrophysics)
Supporting Commission:  44 (High energy astrophysics)
Co-Supporting Commission:  28 (Galaxies)

SOC:  C. Cesarsky (France), T. Courvoisier (Switzerland), G. Fasio (USA),
N. Gehrels (USA), F. Pacini (Italy, Co-Chair), B. Paczynski  (Poland/USA),
R. Sunyaev (Russia), Y. Tanaka (Japan), V. Trimble (USA, Chair), J. Truemper
(Germany) & M. Ward (UK)

Contact address:  Virginia Trimble, Physics Department, University of
California, Irvine CA 92696-4575 USA, Telephone:  1 714 824 6948 (or 1 301
405 5822), Facsimile:  1 714 824 2174 (or 1 301 314 9067). E-mail:
vtrimble@uci.edu (or vtrimble@astro.umd.edu)

Tuesday August 26 morning - Chair:  V. Trimble.  Nearby Transients

Jets and high energy emission processes	R. Blandford (USA)
Solar flare emission, the Yohkoh legacy	M. Yoshimori (Japan), R. Ramaty=
The galactic superluminal sources	L. Rodriguez (Mexico), R. Hjellming (USA)
		F. Mirabel (France)
Highlights from XTE	J. Swank (USA)
Gamma-Ray transients	M. Tavani (USA), D. Helfand (USA)

Tuesday August 26 afternoon - Chair:  N. Gehrels.  X-ray Binaries and
Related Objects

Observations of XRB - Highlights from ROSAT	J. Truemper (Germany)
Theory of X-Ray bursts	W. Lewin (USA)
X-ray binaries:  Evolutionary considerations	V. Lipunov (Russia)
		E. van den Heuvel (Netherlands)
The bursting pulsar	P. Joss (USA), J. van Paradijs (Netherlands)
Black Hole candidates	Y. Tanaka (Japan)
Supersoft sources	P. Kahabka (Netherlands)

Wednesday August 27 morning -  Chair:  F. Pacini.  Distant Transients

Highlights from SIGMA/GRANAT	R. Sunyaev (Russia)
Gamma-ray bursts:  The observational picture	BATSE representative
Observations of Gamma-Ray blazars	T. Takahashi (Japan), R. Hartman (USA)
Models of Gamma-Ray blazars	T. Courvoisier (Switzerland)
		A. Levinson(USA), M. Salvati (Italy)
AGN X-rays	L. Leighly (Japan)
Summing up:  The nature of high energy transients	P. Meszaros (USA), I.
Lapidus (UK)

Many speakers and some topics are quite tentative.  Poster contributions
are greatly encouraged (contact the SOC Chair).  There may be time for a few
additional contributed talks.


Supporting Division:  II (The Sun and the heliosphere)
Supporting Commissions:  10 (Solar activity), 12 (Solar radiation &
structure) & 49 (The interplanetary plasma & the heliosphere)

SOC:  Guxiang  Ai (China), L. Burlaga (USA), F.L. Deubner (Co-Chair,
Germany), P. Foukal (USA), O. Engvold (Norway, Chair), E. Leer (Norway), H.
Ripken (Germany, Co-Chair), T. Sakurai (Japan), F. Verheest (Belgium) &
J.-C.  Vial (France)

Contact address:  Prof. Oddbjoern Engvold, Institute of Theoretical
Astrophysics, University of Oslo, P.O.Box 1029, Blindern, N-0315 Oslo,
Norway, Telephone:  47 22 85 6521, Facsimile:  47 22 85 6505, E-mail:

The meeting will be structured as three consecutive, half days (three full
hours) sessions.  Each session will include three invited reviews, each 20
minutes, and three contributed papers of 10 minutes each.  The keynote talk
(first talk of the first session), will be 35 minutes.  There will be 10
minutes for discussion after each invited talk, and 5 minutes after each of
the contributed papers.  At the end of each 3 hour session, i.e. the last 45
minutes, one has an open discussion which is organized by the session

Tuesday August 26 morning:  Coronal Heating and Solar Wind Acceleration
Chair:  Dr. T. Sakurai (Japan)

Heating of the solar corona	P. Ulmschneider (Germany)
Structure of the solar atmosphere and 	V.H. Hansteen (Norway)
	acceleration of the solar wind
Kinetic plasma theory and classical MHD theory 	M.V. Goldman (USA)

Tuesday 26 Augus, afternoon:  Evolution and Termination of the 3-D Solar
Chair:  Dr. M. Dryer (USA)

Latitude manifestations of the solar wind	J.T. Gosling (USA) *
Composition of the solar wind, 	H. Fahr (Germany)
	secondary ion generation and pick-up
Large-scale structure and termination of the heliosphere	G. Zank (South=

Wednesday August 27 morning:  Transient Events and their Solar Magnetic
Field Sources
Chair:  Dr. J.-C. Vial (France)

Manifestations of solar magnetic fields	S. Solanki (Switzerland)
CMEs and interplanetary ejecta	G.E. Br=FCckner (USA)
Particle acceleration by waves and fields	H. Kunow (Germany)

*	Speaker to be confirmed


Supporting Working Group:  Working Group for the Worldwide Development of
Co-Supporting Commissions:  38 (Exchange of Astronomers), 41 (History of
Astronomy) & 46 (Teaching of Astronomy)

SOC:  A.H. Batten (Canada, Chairman), J. Fierro (Mexico), J. B. Hearnshaw
(New Zealand), H. Jorgensen (Denmark), D. McNally (UK), J.V. Narlikar
(India), L.I. Onuora (Nigeria/UK), M. Othman (Malaysia), J.R. Percy
(Canada), M.C. Pineda de Carias (Honduras) & D.G. Wentzel (USA)

Contact Address:  Dr. A. H. Batten, Dominion Astrophysical Observatory,
5071, W. Saanich  Rd, Victoria, B.C., Canada V8X 4M6, Telephone:  1 250 363
0009, Facsimile:  1 250 363 0045, E-mail:  batten@dao.nrc.ca

Tuesday August 26 morning

Survey of Situation and Needs of Astronomers in Developing Countries

Astronomy Teaching and Research in Nigeria	L.I. Onuora (Nigeria/UK)
The situation in Central America	M.C. Pineda de Carias (Honduras)
Strategies for establishing Astronomy	M. Othman (Malaysia)
	in a Developing Country
New developments in Chinese Astronomy	Li Qibin (China)
Modern astronomical developments in India	R.H. Kochhar (India)

Existing Programmes of the IAU

Astronomy Education Programmes	D.G. Wentzel (USA)
Exchange of Astronomers	H. Jorgensen (Denmark)
IAU Science Services	D. McNally (UK)

Tuesday August 26 afternoon

Astronomy Education in Developing Countries

Current developments in Astronomy Education	J.R. Percy (Canada)
	and their application to Developing Countries
Training in Astronomy 	M. Gerbaldi (France)
Growing-up Pains in a Developing Country	S. Torres-Peimbert (Mexico)
The role of popularization in Developing Countries	J. Fierro (Mexico)
How does the UN contribute to the worldwide	H.J. Haubold (UN/Austria)
	development of Astronomy and Space Science?

Access to Instruments, Journals and Books

Access to telescopes in Developing Countries	J.B. Hearnshaw (New Zealand)
International networks of small telescopes	D.L. Crawford (USA)
What can we do from Japan?	K. Kodaira (Japan)
Access to Journals	H.A. Abt (USA)

Collaboration at Institutional and Personal Levels

Networking between Institutions in the Third World	J.V. Narlikar (India)
Radio astronomy in Developing Countries	G. Swarup (India)
Title to be announced	B. Hidayat (Indonesia)


Supporting Division:  II (The Sun and the heliosphere)
Supporting Commission:  40 (Radio Astronomy)
Co-Supporting Commission:  28 (Galaxies)

SOC:  W.A. Baan (USA, Chairperson), R.J. Cohen (UK), C. Henkel (Germany),
J.M. Moran (USA), N. Nakai (Japan), A.S. Wilson (USA) & J.B. Whiteoak

Contact Address:  Dr. Willem A. Baan, NAIC Arecibo Observatory, P.O. Box
995, Arecibo, PR 00613, USA, Telephone:  1 787 878 2612, Facsimile:  1 787
878 1861, E-mail:  willem@naic.edu

Tuesday August 26 morning

Extragalactic Masers	J.M.Cohen (UK) or C. Henkel (Germany)
High resolution studies of OH and H2CO sources	W.A. Baan (USA)
H2O Megamasers and Black Holes	J.M. Moran (USA)
The AGN Connection	A.S. Wilson (USA) or J.F. Gallimore (Germany)
Megamaser excitation models	M. Elitzur (USA) or N. Kylafis (Greece)
Nuclear H2O pumping	D. Neufeld (USA)

Short contributions

Methanol in LMC	J.B. Whiteoak (Australia)
OH at Galactic Nuclei	C.J. Lonsdale (USA)
Distance determinations	L. Greenhill (USA)
Recent VLBI results of some H2O Megamasers	N. Nakai (Japan)
Megamasers as standard cosmological candles results from SWAS	TBA


Supporting Division:  XI (Space and high energy astrophysics)
Supporting Commission:  44 (Space and high energy astrophysics)
Co-Supporting Division:  VIII (Galaxies and cosmology) & X (Radio=
Co-Supporting Commissions:  28 (Galaxies) & 40 (Radio astronomy)

SOC:  D. B. Campbell (USA), S. Gulkis (USA), L. Gurvits (Russia), L. Higgs
(Canada), N. Kaifu (Japan), Y. Kondo (USA), J. Noordam (Netherlands), G.
Swarup (India), J.-P. Swings (Belgium), Y. Terzian (USA, Chairperson) & G.
Tofani (Italy)

Contact Address:  Professor Yervant Terzian, 512 Space Sciences Building,
Department of Astronomy, Cornell University, Ithaca, NY 14853, Telephone:
607 255 4935, Facsimile:  607 255 9817, E-mail: =

Wednesday August 27 morning

Session I:  General Projects

The role of lunar astronomy in the exploration and 	C. Pilcher (USA)
	development of the Moon
Mission to the Moon:  A phased approach	S. Volont=E9 (France)
Astronomy from the Moon:  Efforts from Japan	N. Kaifu (Japan)
Examples of possible astronomical research from
	the Moon	J. -P. Swings (Belgium)

Session II:  Specific Projects

VLBI from the Moon	L. Gurvits (Russia)
Low frequency radio astronomy from the Moon	K. Weiler (USA)
Gamma-Ray astronomy from the Moon	N. Gehrels (USA)
SETI from the Moon	J. Heidmann (France)

Future plans	General Discussion


Supporting Division:  III (Planetary System Science)
Supporting Commission:  22 (Meteors & Interplanetary dust)
Co-Supporting Commissions:  15 (Physical study of comets, minor planets &
meteorites), 20 (Positions & motions of minor planets, comets and
satellites) & 41 (History of Astronomy)

SOC:  M.H. A'Hearn (USA), P.B. Babadzhanov (Tajikstan), W.J. Baggaley (New
Zealand), S. Dick (USA), I. Hasegawa (Japan), R.W. Hawkes (Canada) & V.
Porubcan (Slovakia), I.P. Williams (UK, Chair) & D.K. Yeomans (USA)

Contact address:  Prof I.P.Williams, Astronomy Unit, Queen Mary & Westfield
College, Mile End Rd, London E1 4NS, UK, Telephone:  44 171 975 5452,
Facsimile:  44 181 981 9587, E-mail:  I.P.Williams@qmw.ac.uk

Wednesday August 27 morning

History of the Leonid Meteor Storms

Early observations of the Leonids 	I. Hasegawa (Japan)
	and other storms in east Asia
Observations of the Leonids over the last millennium	S. Dick (USA)
Comet 55P/Tempel-Tuttle:  its orbit and history	D.K. Yeomans (USA)
The Leonids and the comet history and theory	I.P. Williams (USA)

Contemporary and planned Observations of the Leonids

Current Visual Observations	P. Brown (Canada)
Radar observations	W.J. Baggaley (New Zealand)
Use of TV and CamCorder	R.W. Hawkes (Canada)
Use of the New Adelaide system for Observatios	D. Steel (Australia)
Radar observations in Japan	J. Watanabe (Canada)
Observations in Easter Europe	V. Porubcan (Slovakia)
Observations in Central Asia	P.B. Babadzhanov (Tajikistan)


Supporting Division:  V (Variable Stars)
Supporting Commission:  27 (Variable Stars)
Co-supporting Division:  IV (Stars)
Co-supporting Commission:  35 (Stellar Constitution)

SOC:  M. Takeuti  (Japan,Chairperson), J.R. Buchler (USA), G. Kovacs
(Hungary), D. Sasselov (USA) & R.S. Stobie (South Africa)

Contact address:  Dr M. Takeuti, Astronomical Institute, Tohoku University,
Aoba-ku, Sendai 980-77 Japan, Telephone:  81 22 217 6512, Facsimile:  81 22
217 6513, E-mail:  takeuti@astr.tohoku.ac.jp

Tuesday August 26 morning:  Progress in Observation of Pulsating Stars

Pulsating stars in microlensing database	D. Minneti (USA)
Single- and double-mode Cepheids:  Results	D. Welch (Canada)
	from the MACHO project
IR observations of large amplitude pulsating stars	P. Whitelock (South
Parallaxes and light curves of pulsating stars from HIPPARCOS   M. Grenon
Multisite observation of pulsating stars	S.Y. Jiang (China)
VLBI study of Mira stars	M. Miyoshi (Japan)

Tuesday August 26 afternoon:  Recent Problems in Modeling Pulsating Stars

Models of pulsating stars	H. Saio (Japan)
Asteroseismology of Beta Cephei stars	M. Jerzykiewicz (Poland)
Contribution to the model of pulsating stars in Galaxy,	TBA
	LMC, SMC, and other galaxies
Hydrodynamic simulation of pulsation driven winds 	E.A. Dorfi (Austria)
Deterministic irregularity in pulsating stars	Z. Kollath (Hungary)

Review will be scheduled as 40 min talk.
(	short review (20 min)
*	Speaker to be confirmed.




Supporting Division:  III (Planetary system sciences)
Supporting Commission:  16 (Physical study of planets & satellites)

SOC:  C. Barbieri (Italy), M. Belton (USA), D. Gautier (France), A.
Ingersoll (USA), T. Johnson (USA), T, Owen (USA), J. Rahe (USA, Chair), V,
Tejfel (Kazakhstan), J. Veverka (USA) & R. Young (USA)

Contact Address:  Prof. Mikhail Marov, Keldysh Institue of Applied
Mathematics, Moscow 125047, Russia,  Telephone:  7 095 250 0485, Facsimile:
7 095 972 0737,  E-mail:  marov@applmat.msk.su

Thursday August 21 all day

Information on this Session can be obtained directly from Professor Marov.


Supporting Division:  XI (Space and high energy astrophysics)
Supporting Commission:  21 (Light of night sky)
Co-supporting Commission:  44 (Space and high energy physics)

SOC:  C. Cesarsky (France), P. Clegg (UK), T. Encrenaz (France), T. de
Graauw (Netherlands), H. Habing (Netherlands), M. Harwit (USA), G. Helou
(USA), H. Okuda (Japan), M.F. Kessler (Spain), D. Lemke (Germany,
Chairperson), A. Moorwood (Germany) & J.L. Puget (France)

Contact address:  Dr. Dietrich Lemke, Max-Planck Institute fuer
Koenigstuhl 17, D-69117 Heidelberg, Germany, Telephone:  49 6221 528259,
Facsimile:  49 6221 528246, E-mail:  lemke@mpia-hd.mpg.de


09.15 - 09.25   Mission Overview                   M. Kessler

09.25 - 09.40   ISOCAM                             C. Cesarsky
09.40 - 09.55   SWS                                T. de Graauw
09.55 - 10.10   ISOPHOT                            D. Lemke
10.10 - 10.25   LWS                                P. Clegg

10.25 - 11.00   COFFEE and POSTERS

11.00 - 11.20   Deep Surveys & Cosmology           S. Oliver
11.20 - 11.35   Very Deep Surveys                  Y. Taniguchi
11.35 - 11.50   Galaxy Clusters                    D. Elbaz
11.50 - 12.10   Active & Ultraluminous Galaxies    A. Moorwood

12.10 - 14.00   LUNCH and POSTERS

14.00 - 14.20   Normal Galaxies                    G. Helou
14.20 - 14.35   Star Formation                     L. Nordh
14.35 - 14.55   Circumstellar Matter               H. Habing
14.55 - 15.15   Interstellar Matter                J. Puget

15.15 - 15.45   COFFEE and POSTERS

15.45 - 16.00   Molecular Spectroscopy             tbc
16.00 - 16.15   Supernova Remnants                 R. Tuffs
16.15 - 16.35   Solar System Objects               C. Leinert & T. Encrenaz
16.35 - 16.50   Comets 				   H.U. Keller                  
16.50 - 17.05   Summary and Outlook                M. Harwit
17.05           POSTERS

Note: Poster Abstracts are still accepted, until April 17th,1997





We provide the latest information by way of the World-Wide Web (WWW)
through the Astronomical Society of Japan.  The URL of our page is:


From this page, you can also visit other servers providing useful
information about Kyoto and Japan.  Note that "tenmon" means astronomy in
Japanese.  Registration and reservation of accommodation and tours are also
possible through WWW.


We provide the latest information also by E-mails.  Information is itemized
as General Information, Registration, Accommodation, Forms, LaTeX Template
etc.  Each item is automatically sent back to one who sent an E-mail with a
specific keyword in its Subject field to the following address:


No mail body is necessary. The detailed usage of this service is obtained
by sending any (blank) E-mail with "help" in its Subject field.



The week around August 15 is one of the busiest tourist periods in Japan.
Very many Japanese are travelling in Japan and abroad.  On the weekend
(August 16 and 17) most people are on their way back home.  Therefore, it is
strongly advised to reserve seats on international flights well in advance.


As of August 1996, no visa is required for short-stay visitors to Japan
from the following countries:  Argentine, Austria, Bahamas, Barbados,
Belgium, Brunei (within 14 days), Canada, Chile, Colombia, Costa Rica,
Croatia, Cyprus, Denmark, Dominican Republic, El Salvador, Finland, France,
Germany, Greece, Guatemala, Honduras, Iceland, Ireland, Israel, Italy,
Lesotho, Liechtenstein, Luxembourg, Malta, Mauritius, Mexico, Netherlands,
New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain,
Suriname, Sweden, Switzerland, Tunisia, Turkey, United Kingdom, United
States of America, Uruguay.  The length of stay allowed without visa is
limited to three or six months for these countries, with the exception of
Brunei (14 days).

As visa regulations may change, we recommend prospective participants from
these countries to check that no visa is required at the nearest Consular
Office or Embassy of Japan.

Those from other countries and regions are requested to contact the nearest
Consular Office or Embassy of Japan at least THREE months in advance of
their trip.  The Local Organizing Committee will make any possible efforts
to assist participants in obtaining visas when necessary.  If you need
assistance, please contact the LOC by providing the following information:.

1.	full name and home address	5.	date of issue and passport number
	of the visa applicant	6.	date and place (and preferably number)
2.	date and place of birth		of visa application
3.	citizenship	7.	trip schedule
4.	affiliation and office address	8.	facsimile number and/or E-mail address


By air

There are two major international airports in Japan:

1.	Kansai International Airport (KIX) close to Kyoto.

2.	New Tokyo International Airport (Narita:NRT) close to Tokyo.

From the airports to Kyoto, trains are highly recommended.  As of August
1996, the service hours of direct train from/to the airports are as follows:

FromToService HoursTypical IntervalKIXKyoto6:29 - 22:1830 minKyotoKIX5:31 -
20:1630 min NRT Tokyo 7:43 - 21:4330 or 60 minTokyoNRT6:30 - 20:0330 or 60
minFare and travelling time are shown in 
 Figure 1 (Connection Map to/from Airports)
Train schedules are available through the WWW.

From Tokyo to Kyoto, see  Transportation in Japan below.

By sea

Some regular ship services are available to Japan from Russia, China, and

Port (Country)Port in JapanVladivostok (Russia)Niigata, FushikiShanghai
(China)Osaka, Kobe, NagasakiTsingtao (China)ShimonosekiTientsin
(China)KobePusan (Korea)Hakata, ShimonosekiFrom Taiwan no direct access is
available to Japan main islands.  See also  Transportation in Japan
below.From the ports to Kyoto, trains are highly recommended.  Fare and
travelling time are shown in 

 Figure 2 (Connection Map to/from Seaports)


By air

Regular domestic flights are available to all major cities in Japan.  But
only four flights per day are available from Narita Airport (NRT, Tokyo) to
Kansai Airport (KIX, Osaka).  Flights from Tokyo Airport (Haneda) to Osaka
Airport (Itami) take 60 min and cost 15,600 Yen.  Air travel on this route
is recommended only when its fare is included in the fare of your
international flight, since there are fewer planes than "Shinkansen" trains
and approach to these airports is rather complicated.

By train

Train is the most convenient public transport in Japan.  You need to buy a
ticket and show it at a station gate (Kaisatsu) before getting to platforms
Most trains are monoclass although some trains have higher class cars named
"green car", which need supplemental charge.

Major cities in Japan are connected by a railway network operated by Japan
Railway (JR) companies.  The network includes "Shinkansen" (Bullet train)
connecting big cities like Tokyo, Kyoto and Osaka.  More than 5 services per
hour are available between Tokyo and Kyoto, Osaka from 6:00 to 21:18.  A
non-limited mileage pass called "JR pass" can be purchased in advance
outside of Japan. Please contact with travel agents in detail.

Some smaller railway companies operate lines connecting major sightseeing
spots and cities; "Hankyu" and "Keihan" between Kyoto and Osaka, "Kintetsu"
between Kyoto, Osaka, and Nara.  More information will appear in the
forthcoming Information Bulletins and on the WWW.

By car

Driving is on the left side.  We discourage you driving a car because of
heavy traffic jams and parking problems.  However, should you decide to
drive a car, an international driving license is requested.  We also
strongly recommend to buy unlimited liability insurance.


General Caution

Several independent companies and authorities operate buses, subways, and
ailways in a single city area.  Their fares are usually paid separately.

Subway & Railways

A subway line across the city in the north-south direction is available.
Its service hours are 5:30 to 23:00 and the frequency is four to seven
minutes.  The subway is scheduled to be extended up to the Kyoto
International Conference Hall (KICH) by June 1997 and the closest station
will then be "Kokusai-Kaikan" (international conference hall in Japanese),
just in front of KICH.  The fare is between 200 Yen and 290 Yen depending on
the distance.  One-day and two-day tickets are also available.  The network
of the subway and other railways in Kyoto city is shown in 

Figure 3 (Guide Map of Kyoto City and Hotel Location)

Bus, Subway & combined Bus/Subway Fares

The bus network covers the whole city.  The fare is 220 Yen per ride within
the central city, although some bus routes extend up to the suburbs beyond
the 220 Yen area.  One-day and Two-day tickets are also available.  The bus
routes to Kyoto International Conference Hall are shown on Figure 3:  Guide
Map of Kyoto City and Hotel Location.


Taxis are also available, but they are much more expensive than other means
of transportation, approximately ten times of the corresponding subway
and/or bus fare.  It costs roughly 630 Yen for the first 2 km and 320 Yen/km
for additional distance, for example 3,000 Yen from JR Kyoto station to


Kyoto is usually hot and humid in August.  The average low and high
temperatures of a day in August are 24 C (75 F) and 33 C (91 F),
respectively.  The average humidity is 69%.  Showers are possible in the
evening.  Light and casual clothing is appropriate.  The Kyoto International
Conference Hall and all major hotels, buildings, trains, and buses are well
air-conditioned.  A light sweater or cardigan can be useful there. No formal
dress is required at any events of the General Assembly.


The voltage in Japan is 100 V AC.  The frequency is 60 Hz in the western
half of Japan including Kyoto and Osaka.  In the eastern half including
Tokyo, it is 50 Hz.  The plugs are of the flat pin type and are similar, but
not identical, to those used in the US, the difference being that both
blades are the size of the narrower one of US type blades.



Attendance at the XXIIIrd General Assembly is open to all members of the IAU
and to non members invited by the IAU.  Invitations can be provided by the
Adhering Organizations/National Committees for the IAU, the Scientific
Organization Committees of the Symposia and Joint Discussions or, if
necessary, by the President of the Union through the IAU Secretariat.
Please note that an invitation to attend the General Assembly does not imply
any financial commitment towards the participant by the IAU or the Local
Organizing Committee.

Each participant (IAU member or invited participant) may register one adult
and/or child(ren) as guest(s).  Registered guests cannot attend the
scientific meetings (except for the Invited Discourses), but otherwise
enjoys the same privileges as participants.


A limited number of travel grants to attend the XXIIIrd GA will be available
for participants who cannot obtain necessary travel funds from national
sources.  Those who plan to contribute actively to one of the Symposia
should send their grant application to the corresponding Symposium
Scientific Organising Committee.  Colleagues who plan to participate
actively in Joint Discussions, Special Sessions, Divisions, Commissions and
Working Groups are requested to send their grant application to the General
Secretary.  The deadline for grant applications is in both cases February
15, 1997.  For all grant applications the form atttached to this Bulletin
has to be used.


Participants should complete the (blue) Registration Form attached in this
Bulletin and return it to the LOC (address on the form and page 3 of this
Bulletin) no later than July 15, 1997. Note that the return addresses are
different between blue and yellow forms.  We accept forms sent by regular
mail, facsimile, and e-mail and registration through our WWW registration
page, http://www.tenmon.or.jp/iau97/  After that date, advance registrations
by mail/facsimile/e-mail/WWW are no longer accepted.  However late
registration will still be possible upon arrival in Kyoto at the
Registration Desk in the conference hall until August 29.

Each person attending any portion of the XXIIIrd General Assembly or the
associated symposia must register and pay the appropriate fee, as shown below:

Registration & payment received	before April 30, 1997   after April 30, 1997:

IAU Member	                Yen 30,000 	                Yen 35,000 
Invited Participant *	        Yen 30,000 	                Yen 35,000 
Registered Guest**	        Yen 10,000 	                Yen 15,000 
Child(ren) 11 years old or younger Free	                           Free

*	invited by the IAU, Adhering Organizations 	or National Committee or SOCs
**	must be registered on the same form as the IAU member or the invited
***	must be registered on the same form as the IAU member or the invited

For most of tours, children of age less than 6 are free and 
children of age
6 to 11 will get about 20-50 % discount.

Applications should be accompanied by a remittance covering the registration
fee.  No registration will be confirmed in the absence of this payment.
Personal checks are NOT accepted.  All payments must be in Japanese Yen.
Payment should be in one of the following forms (in the case of E-mail/WWW
registration, only credit cards may be used):

-	A bank draft payable at a Japanese bank (Bank of Tokyo Mitsubishi,
preferrably) to the order of "Dai 23 Kai Kokusai-Tenmongaku-Rengo Soukai
Soshiki-Iinkai Kaikei Arimoto Nobuo".

-	A bank transfer to "Dai 23 Kai Kokusai-Tenmongaku-Rengo Soukai
Soshiki-Iinkai Kaikei Arimoto Nobuo", account at the Bank of Tokyo
Mitsubishi, Musashi-Sakai Branch (Branch 221) 2-2-3, Kyohnan, Musashino,
Tokyo 180, Japan, (Account 0837975).

-	Credit cards:  VISA, MasterCard, and AMEX


Registrations will be confirmed via e-mail/facsimile/mail by the LOC within
two weeks after receipt of the registration form and payment.  If any
confirmation does not arrive six weeks after your sending, please contact
the LOC by e-mail/facsimile. 

Cancellation & Refunds

For notices sent before June 15, 1997 (date postmark), a charge of transfer
of 2,000 Yen or so will be deducted before refunding. For late notices sent
before August 1, 1997 (date postmark), the half of payment will be refund.
Regrettably, no refund requests will be accepted after that date.



Reservations for accommodation and most tours are under the responsibility
of the Japan Travel Bureau (JTB), which has been appointed as the official
travel agent for the General Assembly:

Japan Travel Bureau, Inc.	
International Travel Division	
Convention Center (CD100993-543)	
5-5-2, Kiba, Koto-ku, Tokyo135, Japan

Telephone:  81 3 5620 9429
Facsimile:  81 3 5620 9499
E-mail will be available after November 1, 1996

JTB will accept reservation requests during the period November 1, 1996 to
June 30, 1997, and should be contacted for all questions concerning
accommodation, tours, and related local arrangements.


	Room charge per night (in Yen)

Cat.   Name of Hotel         Single   Twin   Triple    Location         ID

A  Takaragaike Prince Hotel  17,000  20,000          5 min to KICH       1

A  Kyoto Hotel               14,500  20,000         10 min to Oike       2

A  Miyako Hotel (Deluxe)     17,000  20,000           taxi to Oike       3

B  Miyako Hotel (Standard)   14,000  17,000           taxi to Oike       4

B  Kyoto ANA Hotel            9,500  17,000          15 min to Oike      5

B  Kyoto Royal Hotel          9,500  17,000          15 min to Oike      6

C  Holiday Inn Kyoto          9.000  16,000          free shuttle        7

C  Karasuma Kyoto Hotel       8,500  16,000          1 min to Shijo      8

C  Hotel Keihan Kyoto         8,500  16,000          3 min to Kyoto      9

C  Hearton Hotel Kyoto        8,700  14,900          5 min to Oike      10

D  Kyoto Palaceside Hotel     8,000  13,000         near Marutamachi    11

D  Kyoto Prince Hotel         7,500  13,000         free shuttle        12

D  Hotel Gimmond Kyoto        7,000  12,000         5 min to Oike       13

D  Kyoto Garden Hotel         7,000  12,000         5 min to Oike       14

D  Hotel Alpha Kyoto          7,000  12,000        15 min  to Oike      15

D  Maruko Inn Kyoto           7,000  12,000        10 min to Shijo      16

E  Hotel New Kyoto               -   11,000 15,000  near Marutamachi    17

E  Kyoto Tokyu Inn                   12,000 15,000    bus to Gojo       18

Y  Utano Youth Hostel                 4,150*        bus to Kita-Oji     19

Y  Higashiyama Youth Hostel           4,300*        bus to Oike         20

     *	per person including 2 meals; 4-8 persons/room	

Except Category Y, all have a private bath room with a bathtub.
Note that the number of single rooms is limited, around 450 in total.  

JTB has block-booked hotels (See list in previous Table) in Kyoto during the
period of the General Assembly.  Reservations will be made on a first-come,
first-served basis.  Please indicate your order of preference when filling
in the (yellow) Application Form enclosed.  If the hotel you had chosen is
fully booked, a reservation in a similar hotel corresponding to your
indications will be made.  Most of the hotels are scattered within the
central part of Kyoto.  For location, see 

    Figure 3 (Guide Map of Kyoto City and Hotel Location)


All participants and their registered guests are welcome to attend the
social and cultural events.  We request participants to wear their badge at
all events.  Further to the badge, a ticket is required for the Japanese
Music Concert.  Some of these events are handled by the LOC, others by the
Japanese Travel Bureau.  Please use the appropriate form as indicated.

Reception, Monday August 18, evening	Free of charge

All participants and registered guests are welcome to the reception to be
held on the evening of August 18 (Monday).  Please tick the corresponding
box of the (blue) Registration Form.

Welcome Brass Concert: Wednesday August 20, evening	Free of charge

Following the first General Assembly meeting, a brass concert will be held
in the evening of August 20 (Wednesday) at KICH.  Please tick the
corresponding box of the (blue) Registration Form.

Japanese Music Concert, Monday August 25, evening	Adults:  1,500 Yen
	Children (Age 11 and under) 800 Yen

An evening concert will be performed at a hall kindly offered by the Kyoto
School of Computer Sciences near JR Kyoto Station.  The programme will
contain traditional Japanese musics and plays.  Please tick the
corresponding box of the (blue) Registration Form.

Banquet, Wednesday August 27, evening	Free of charge

All participants and registered guests are welcome to the banquet to be held
on the evening of August 27 (Wednesday).  Please tick the corresponding box
of the (blue) Registration Form.

Recreational Tour to Nara, Sunday August 24, all day	Free Transportation

The LOC arranges a Sunday tour in Nara on August 24.  Some Japanese
astronomers will accompany this tour.  Nara was the imperial capital of
Japan in the 8-th century.  There are many famous old temples and shrines in
Nara.  Free transportation between Kyoto and Nara (a round trip by train) is
provided by the LOC.  After arriving at Nara, you are free to visit the
places you are interested in. Admissions, lunch and bus or taxi fees are to
be paid individually.  A detailed guide map will be provided.  Please tick
the corresponding box of the (blue) Registration Form.

ST-1 Science Tour to the Nobeyama Radio Observatory
Saturday August 23 & Sunday August 24 	Adults: 12,000 Yen
	Children (Age 6-11):  6,000 Yen
	Accommodation (4 up to 7 persons in a room) is included in this price

A visit to the Nobeyama Radio Observatory is planned from August 23
(Saturday) to August 24 (Sunday).  The observatory belongs to the National
Astronomical Observatory and is located in Nagano Prefecture.  The Nobeyama
45 meter radio telescope, the Nobeyama Millimeter Array (interferometer with
six 10 meter dishes), and the Radio Heliograph are in operation.  The tour
is planned to leave Kyoto in the morning by bus.  We go through expressways
and arrive at the observatory after lunch.  After a few hours of science
visits, participants can enjoy a outdoor walking in cool atmosphere of
highland and an evening beer party.  Accommodations are booked near the
observatory.  They are of the type of youth hostels, a room being shared by
4-7 persons.  The tour leaves Nobeyama next morning and comes back to Kyoto
in the evening of August 24.

You can get more information on the observatory itself through the WWW.  Its
URL is:


The fare of tour includes two lunches, one breakfast as well as
accommodation.  Participants to the Nobeyama tour do not need to keep their
hotel room(s) in Kyoto on August 23 (but please wait for confirmation of the
trip before cancelling your reservation for that night).  Minimum:  30
persons, maximum:  90 persons.  Please register using the (yellow)
Application Form.


Walking Tours in Kyoto (No pre-registration requested)	Individual payment

Half day walking visits in various spots (temples, shrines, gardens, museums
and shopping centers) in Kyoto are planned for accompanying persons on
August 21, 22, 25, and 26.  Japanese volunteers will post their plans in the
entrance hall of Kyoto International Conference Hall.  Admissions and
transportation (bus, subway, and taxi) fees are to be paid individually.

Optional Tours.

The following tours are handled by the Japanese Travel Bureau.  Please use
the (yellow) Application Form to register.

OP-1 Kyoto morning, Daily 8:55 - around 12:40 	Adults:  5,000 Yen
	Children (Age 6-11):  4,000 Yen

Tour visits Nijo Castle, once used as the Tokugawa Shogun's accommodations;
Golden Pavilion, a gilded structure, originally an Ashikaga Shogun's villa;
Kyoto Imperial Palace, a former residence of Emperors (on Sat. and Sun.:
visit Higashi Honganji Temple instead);  and Kyoto Handicraft Center to
watch demonstrations by skilled craftspersons.  Tour disbands on arrival at
the Kyoto Handicraft Center.  Sending services to major hotels in Kyoto are
offered by the Handicraft Center.

OP-2 Kyoto 1 Day, Daily 8:55 - around 17:30	Adults:  10,800 Yen
	Children (Age 6-11):  8,700 Yen

The same as OP-1 for the morning. Lunch at Kyoto Handicraft Center.  Tour
visits Vermilion Heian Shrine, a magnificent structure strongly influenced
by Chinese architecture; Sanjusangendo Hall and its 1,001 impressive statues
of Buddha; and Kiyomizu Temple to enjoy a sweeping view of the city from its
lofty terrace.

OP-3 Nara afternoon, Daily 13:40 - around 18:40 	Adults:  5,900 Yen
	Children (Age 6-11):  4,900 Yen

Tour visits Todaiji Temple, the world's largest wooden building that houses
the 50-feet-high Great Buddha; Peaceful Deer Park, where many tame deer roam
the grounds; Vermilion-hued Kasuga Shrine,with its thousands of lanterns.
Countryside drive, an informative junket to Nara and return.

OP-4 Kyoto & Nara 1 Day, Daily 8:55 - around 18:40 	Adults:  11,700 Yen
	Children (Age 6-11):  9,400 Yen

The same as OP-1 for the morning. Lunch at Kyoto Handicraft Center.  The
same as OP-3 for the afternoon.

OP-5 Rapid Shooting, Daily 13:40 - around 18:00	Adults:  9,800 Yen
	Children (Age 6-11):  8,500 Yen

Transfer to Kyoto Station and board a local train for Kameoka.  Then, an
exciting eight-mile, ninety-minute trip downstream, shooting the Hozu Rapids
aboard a flat-bottomed boat from Kameoka to scenic Arashiyama.  Return by
local train to Kyoto.  Non-reserved seats on local trains.  This tour will
not operate if the total number of participants does not reach 2.

OP-6 Special Night, 
Tuesday, Thursday & Saturday, 18:40 - around 22:00	10,000 Yen

Being a guest at Tea Ceremony in the Japanese inn "Yoshiima".  Supper at the
Japanese inn "Yoshiima".  Enjoy various kinds of Japanese traditional arts
at Gion Corner.

This tour will not operate if the total number of participants does not reach 2.

Tour Conditions

Tour fare include (1) Sightseeing and transfers as shown in the itineraries,
by motorcoach and/or sightseeing boats on a seat-sharing basis, plus
admission fees to temple, shrine, etc.;  (2) Railways:  tourist-class
reserved seats;  (3) Meals as specified in each itinerary;  (4)
English-speaking guide.

Payment, confirmation, cancellation & refunds


Participants wishing to reserve hotel accommodations and tours should
complete the (yellow) Application Form and return it to reach JTB no later
than June 30, 1997.  Note that the return addresses are different between
blue and yellow forms.  Application should be accompanied by a remittance
covering the hotel deposit of 20,000 Yen and/or total tour fare and a
handling charge of 500 Yen due JTB.  No reservation will be confirmed in the
absence of this payment.  Personal checks are NOT accepted.  All payment
must be in Japanese Yen.  The hotel deposit will be credited to your bill
when checking out.  Payment should be in the form of:

-	A bank transfer to the Japan Travel Bureau, Inc. (Ref:  CD100993-543)
account at the Bank of Tokyo Mitsubishi, Shin-Marunouchi Branch 1-4-2,
Marunouchi, Chiyoda-ku, Tokyo 100, Japan (Account number:  1025740)

-	A bank check payable to the order of the Japan Travel Bureau, Inc.

-	The following credit cards are acceptable: 

	MasterCard	VISA
	Diners Club	AMEX


JTB will confirm your reservations within 2 weeks after receipt of your
accommodation form and payment, but no later than July 15, 1997.  If
confirmation is not received six weeks after mailing the form and payment,
please contact JTB by facsimile (81 3 5620 9499).

Cancellation & Refunds

In the event of cancellation, written notification should be sent to JTB.
The following cancellation fees will be deducted before refunding.


Up to 9 days before the first night of stay	2,000 Yen
2 to 8 days before	20% of daily room charge (minimum 2,000 Yen)
Less than 2 days before, or no notice	100% of daily room charge


Up to 21 prior to departure day	2,000 Yen
20 - 8 days	10% of tour fare (minimum 2,000 Yen)
7 - 1 days	20% of tour fare (minimum 2,000 Yen)
Prior to starting time, or no notice	100% of tour fare



The XXIIIrd General Assembly of the IAU is to be held in "Kyoto Kokusai
Kaikan (Kyoto International  Conference Hall, KICH)", Takaragaike, Sakyo-ku,
Kyoto.  Full details of the facilities and services available to
participants of the XXIIIrd IAU General Assembly will be given in the final


The registration desk will be open from Sunday afternoon, August 17 through
Friday afternoon, 29 August.  It will be closed on Saturday afternoon and on
August 24 (Sunday).  All participants, including those who already
registered by mail, e-mail or WWW, must first report to the registration
desk and collect their registration package containing the final program,
badges, the Abstract Book, etc. Badges will be required for entering the
Conference Hall and for all General Assembly meetings and events.


A desk for general tourist information and travel assistance will be
organized by the official travel agent, the Japan Travel Bureau, Inc. (JTB).


At the major service offices in downtown Kyoto, you can easily exchange
currency between Japanese Yen and US dollars (in cash and travellers check).
Other major currency can be exchanged at some offices only.  Their list will
be published in Information Bulletin 79.  Banks are open from 9:00 through
to 15:00 and closed on Saturday & Sunday.  The exchange rate is the same at
all banks.  US dollars can also be exchanged at some major hotels.  Most
stores accept credit cards (VISA, MasterCard, American Express, etc).
Travellers checks or personal checks are normally not accepted in stores.


Each participant will have his/her own mailbox.


The postal address of participants during the XXIIIrd General Assembly will be

IAU XXIIIrd General Assembly
Kyoto International Conference Hall
Takaragaike, Sakyo-ku, Kyoto 606

Note that this address is only valid during the General Assembly.  

There are some public phone boxes at KICH.  The service of sending a message
by facsimile is available at KICH with charge.  The telephone and facsimile
numbers of the registration desk will be published in the Information
Bulletin 79.  Note that they are only for receiving urgent messages to

A limited number of terminals will be available to participants to
send/receive e-mail messages. 


Photocopying machines will be available at the KICH.  Participants will be
charged for using this service.


A Newspaper of the General Assembly will appear during the Assembly.  It
will carry articles of general interest to the astronomical community,
reports on scientific and social programme of the days to come.  The editors
of the daily Newspaper are Drs Jun Jugaku and G. Seth Shostak.


Cold green tea, cold water, and coffee will be served.


The Kyoto International Conference Hall hosts a restaurant, named "Grill",
and a cafe.  Prices are about 700-1,000 Yen per dish.  There are also some
small restaurants and coffee shops within 1 km around the Conference Hall.
If you want to reduce the meal expenses, we recommend you to buy a box lunch
at mini-stores (called "Kombini" in Japanese) in the downtown area.


First Aid is available in the Kyoto International Conference Hall.


Please inquire at your hotel.  Child care is available at Miyako Hotel and
Kyoto ANA Hotel.  There is no child care service available at Kyoto
International Conference Hall.


Scientific and technical material of interest to the participants of the
General Assembly may be exhibited during the meetings.  Institutions and
companies interested in using the opportunity to exhibit or display their
material are requested to contact the Local Organizing Committee for
information and conditions.



Overhead and slide projectors will be available in all the rooms for oral
presentation.  Microphones will be available in large rooms.  Video
equipment will not be available in the lecture halls.  However, a video
corner will be set up in the poster room (see below).


A limited number of video monitors will be available for poster
presentations.  They will be set up at a corner of the poster room.  Those
who want to use them are requested to add a line "(Video presentation
planned)" at the end of the abstract as well as to attach a memo in
submitting poster abstracts.  Please be sure to include your e-mail address
in the abstract for further contacts.  Only videos recorded on normal-sized
VHS (not S-VHS) cassettes in NTSC mode can be displayed.  The presentation
time will be assigned to one of the breaks.  Detailed instructions will be
given later.


Only posters prepared by actual participants of the General Assembly and
related to one of the scientific events or related to business sessions of
Commissions will be accepted.  A room for 600 poster presentations is
reserved.  The present plan is to share one poster space by 4 papers in
turn.  Hence a total number of 2400 poster papers can be accommodated.
Simple arithmetics results, on average, in 200 papers for a Symposium and 50
for a Joint Discussion of one-day length.  If this is not enough, then we
can offer more space by changing posters more frequently.  Each poster will
be assigned a number referring to the poster board in the Congress building.
The poster board for a paper will be 90 x 90 cm.

Selection of Posters and Publication of Poster Abstracts

Selection of poster papers will be made by the Scientific Organizing
Committees (SOCs) of Symposia and Joint Discussions, on the basis of Poster
Abstracts received before February l5, 1997 at the SOC contact address given
in this Bulletin.  Poster papers accepted by a SOC and communicated to the
Local Organizing Committee will be accepted for display and registered by
the LOC when at least one of the authors has registered and paid his/her
registration fee before June 15, 1997.  Only the registered poster papers
will be included in the Abstracts Book and WWW page and will be allocated a
poster board.  Hence, authors of poster papers have to register no later
than by June 15th, 1997.

Copies of the Abstract Book containing the Abstracts of all posters accepted
by Symposium and Joint Discussion SOCs, and a floor plan of the poster area,
will be distributed at the Assembly.  For publication in the Abstract Book,
poster abstracts must be prepared following the instructions given below.

Preparation of Abstracts

Each page of the Abstract Book will contain four abstracts.  The page size
is A4:  21.0 cm by 29.7 cm.  The actual size for each abstract in print is
7.8 cm wide and 10.6 cm high.  Please send the abstract to the SOCs by
E-mail in the following two forms:

(1) a LaTeX file following a template available on the WWW page or by E-mail
from LOC,


(2) a plain ASCII text for inclusion in the WWW page.

We strongly ask you to send BOTH of the above two forms by E-mail.  If
e-mail is not available, however, please send the SOCs a camera-ready copy
being 11 cm wide and 15 cm high, which will be reduced by 70.7 % before
printing.  Any typeface, font sizes, and line spacings will be accepted, but
oversized manuscripts will be shortened for printing.

The manuscript must include title, author name(s), institute(s), e-mail
address(es), and main text.  Each abstract must be shorter than 200 words.


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