Les Rencontres de l'Observatoire 2004

Gaia ou l'Univers en 3D
Observatoire de Paris-Meudon
4-7 Octobre 2004
Final Symposium Programme

The Symposium will begin at 09:30 on Monday 4 October and is scheduled to close on Thursday 7 October at 16:00. Please check the programme for details of opening and closing times for the daily sessions.

The Scientific Organising Committee has selected the invited and oral contributions to be presented. They are listed below. The list of all contributions (invited, oral and poster) can be found here. A list of abstracts, organised per session, is available here.

Monday 4 October

1. Overview of the mission, design, and scientific performances

Chair: Daniel Egret

  9:30   (15m)    Opening of the Symposium - Jean Kovalevsky
  9:45   (25m)      1.1 Overall scientific objectives - François Mignard
10:10   (25m)      1.2 Overview of the Gaia mission - Michael Perryman
10:35   (25m)      1.3 Satellite and development - Oscar Pace

coffee 11:00 - 11:30

11:30   (25m)      1.4 Astrometric instrument: principles - Lennart Lindegren
11:55   (20m)      1.5 Accuracy budget and performances - Jos de Bruijne
12:15   (25m)      1.6 Photometric system design and performances - Carme Jordi
12:40   (25m)      1.7 Radial Velocity Spectrometer design and performance - David Katz

lunch 13:05 - 14:15

2. Galaxy census, formation and evolution

Chair: Karri Muinonen

14:15  (15m)      2.1 Gaia in the ESA Science Programme - David Southwood
14:30  (25m)      2.2 Census and completeness - Annie Robin
14:55  (25m)      2.3 Dynamical models of the Galaxy - James Binney
15:20  (25m)      2.4 Census of binaries - the big picture - Staffan Söderhjelm
15:45  (20m)      2.5 ISM, extinction and star forming regions - Jens Knude
16:05  (20m)      2.6 Galactic disk and bulge - Antonella Vallenari

coffee 16:25 - 16:55

16:55 (25m)      2.7 Chemical evolution of the Galaxy - Poul Erik Nissen
17:20 (40m)      Contributions
    17:20 (10m)     Revisiting the concept of superclusters - Benoit Famaey et al.
    17:30 (10m)     Age, metallicity, distance and reddening of single stellar populations - D. Valls Gabaud and X. Hernandez
    17:40 (10m)     Mapping the interstellar extinction in three dimensions - Douglas Marshall, Annie C. Robin and Céline Reylé
    17:50 (10m)     The Galactic bulge as seen by Gaia - Céline Reylé et al.
18:00 (20m)      Poster summary - David Katz
18:20 End
Tuesday 5 October

3. Relativity, Solar System, Exo-planets

Chair: James Binney

  9:30  (25m)      3.1 Relativistic formulation and reference frame - Sergei Klioner
  9:55  (20m)      3.2 Limits: surface structure, microlensing, binarity - Ulrich Bastian
10:15  (25m)      3.3 Asteroid orbits with Gaia - Karri Muinonen et al.
10:40  (20m)      3.4 Gaia observations of asteroids: sizes, taxonomy, shapes and spin properties - Alberto Cellino et al.

coffee 11:00 - 11:30

11:30  (20m)     3.5 Near-Earth objects - Erik Høg
11:50  (25m)     3.6 Impact of Gaia on dynamics/evolution of the Solar System - Paolo Tanga
12:15  (25m)     3.7 Characteristics and formation of exo-planetary systems - Didier Queloz
12:40  (25m)     3.8 Exo-planetary systems: detection, transits - Mario Lattanzi

lunch 13:05 - 14:15

14:15  (20m)      Poster summary - Ulrich Bastian
14:35  (30m)      Contributions
    14:35 (10m)            Methods of Relativistic Astrometry: the RAMOD project - Fernando de Felice
    14:45 (10m)            Stellar wobble in triple systems mimicking a planet - Jean Schneider
    14:55 (10m)            The study of stars with planets - Giusa Cayrel De Strobel

 
4. Technical issues, data simulation, reduction and processing

Chair: Carla Cacciari

15:10 (20m)       4.1 On-board detection, data handling, completeness - Frédéric Arenou et al.
15:30 (20m)       4.2 Astrometric instrument CCDs and focal plane - Alex Short

coffee 15:50 - 16:20

16:20  (20m)      4.3 Radial velocity spectrometer technical issues - Mark Cropper and RVS Consortium
16:40  (25m)      4.4 Modeling the instruments and simulating the data stream - Xavier Luri, Carine Babusiaux and Eduardo Masana
17:05  (25m)      4.5 Design and overview of the data processing - Jordi Torra
17:30  (20m)      4.6 Data processing: core tasks - Francesca Figueras and GDAAS team
17:50  (20m)      4.7 Photometric data analysis - Anthony Brown et al.

18:10 End
Wednesday 6 October

  9:30  (20m)       4.8 Science alerts - Wyn Evans
  9:50  (20m)       4.9 Object classification and the determination of stellar parameters- Coryn Bailer-Jones
10:10  (20m)       Poster summary for sessions 1 and 4 - François Mignard
10:30  (20m)      Contributions
    10:30 (10m)            Applying Grid Technology to Gaia Data Processing - Salim Ansari et al.
    10:40 (10m)            First-Look processing - Stefan Jordan et al.

coffee 10:50 - 11:20

5. Stars: laboratories and tracers

Chair: Poul Erik Nissen

11:20  (25m)     5.1 Stellar structure and atmospheres - Yveline Lebreton
11:45  (25m)     5.2 Atmospheric parameters, Alpha elements and stellar evolution - Alejandra Recio-Blanco and Frédéric Thévenin
12:10  (25m)     5.3 Duplicity and masses - Dimitri Pourbaix
12:35  (25m)     5.4 Variability: detection and classification - Laurent Eyer
 
lunch 13:00 - 14:15

14:15  (20m)     5.5 Metallicities and ages in disk populations - Misha Haywood
14:35  (25m)     5.6 First results from the RAVE spectral survey - Ulisse Munari and Tomaz Zwitter
15:00  (20m)      Poster summary - Michel Breger
15:20  (30m)      Contributions
    15:20 (10m)            Determination of stellar rotation with Gaia and effects of spectral mismatch- Andreja Gomboc and David Katz
    15:30 (10m)            Emission line stars in the framework of Gaia - Indrek Kolka et al.
    15:40 (10m)            The role of C, N, O and alpha-process elements - G. Tautvaisiene and B. Edvardsson

 15:50 End

Evening: Symposium Dinner
Thursday 7 October

6. The Galaxy and beyond

Chair: Catherine Césarsky

10:00  (25m)      6.1 Stellar clusters, IMF and intracluster dynamics - Pavel Kroupa
10:25  (20m)      6.2 Crowded fields in the Milky Way and beyond - Carine Babusiaux
10:45  (25m)      6.3 The oldest stars and early Universe - Monique Spite, Roger Cayrel and the LP "First Stars" members

coffee 11:10 - 11:40

11:40 (25m)      6.4 Dark matter in the Local Group - Mark Wilkinson
12:05 (20m)      6.5 Variable stars as standard candles and stellar tracers - Giuseppe Bono
12:25 (20m)      6.6 Quasars: identification and astrophysical parameters - Jean-François Claeskens et al.

lunch 12:45 - 14:15

14:15  (20m)      Poster summary - Xavier Luri
14:35  (30m)      Contributions
    14:35 (10m)            The determination of proper motions in the Galaxy - Jean Kovalevsky
    14:45 (10m)            Globular cluster kinematics with Gaia - Holger Baumgardt and Pavel Kroupa
    14:55 (10m)            Mapping halo debris: The influence of live dark matter potentials - Stuart Gill et al.

15:10  (30m)            Concluding Remarks: Gaia and astrophysics in 2015-20 - Tim de Zeeuw

16:00 End of Symposium