| Issue |
EAS Publications Series
Volume 45, 2010
GAIA: At the Frontiers of Astrometry
|
|
|---|---|---|
| Page(s) | 161 - 166 | |
| DOI | https://doi.org/10.1051/eas/1045028 | |
| Published online | 15 February 2011 | |
C. Turon, F. Meynadier and F. Arenou (eds)
EAS Publications Series, 45 (2010) 161-166
The variable Universe Through the Eyes of Gaia
1
Observatoire de Genève, Université de Genève,
1290
Sauverny,
Switzerland
2
ISDC, Observatoire de Genève, Université de Genève,
1290
Sauverny,
Switzerland
3
Institute of Astronomy, University of Cambridge,
Cambridge
CB3 0HA,
UK
The ESA Gaia mission will provide a multi-epoch database for a billion of objects, including variable objects that comprise stars, active galactic nuclei and asteroids. We highlight a few of Gaia’s properties that will benefit the study of variable objects, and illustrate with two examples the work being done in the preparation of the data processing and object characterization. The first example relates to the analysis of the nearly simultaneous multi-band data of Gaia with the Principal Component Analysis techniques, and the second example concerns the classification of Gaia time series into variability types. The results of the ground-based processing of Gaia’s variable objects data will be made available to the scientific community through the intermediate and final ESA releases throughout the mission.
© EAS, EDP Sciences 2011