The ESA mission GAIA

Details The ESA mission GAIA The ESA mission GAIA

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..281c&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Computer Science

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Scientific paper

After the success of HIPPARCOS, the GAIA mission has been selected as a cornerstone by ESA , and is expected for a launch around 2010. About 1 billion stars will be observed (up to magnitude ~20), as well as galaxies, quasars, and Solar System objects. I will describe briefly: - the 3 instruments (astrometry, photometry, radial velocities), and their presently expected performances; - the French contribution; - the progress of the work and the choices still to be made; - a few close-ups concerning stellar physics.

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