Carine Babusiaux (GEPI) : The first Gaia data release

lundi 10 oct. 2016, 14:00 → 15:00 Europe/Paris

Charpak (LPNHE)

I will present the first Gaia data release, consisting of astrometry and photometry for over 1 billion sources brighter than G=20.7 from the first 14 months of the mission. Gaia DR1 consists of three parts: 1) position and mean G-band magnitudes for 1.1 billion sources 2) positions, parallaxes, mean proper motions for about 2 million of the brightest stars in common with the Hipparcos and Tycho-2 catalogues 3) G-band light curves and the characteristics of ∼3000 Cepheid and RR-Lyrae stars observed at high cadence around the south ecliptic pole. I will describe the contents of this catalogue and highlight the limitations of this preliminary release to take into account for an optimal scientific exploitation of those data.

Transparents GaiaDR1.pdf