The variable Universe through the eyes of Gaia

Details The variable Universe through the eyes of Gaia The variable Universe through the eyes of Gaia

2010-11-19

arxiv.org/abs/1011.4527v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, 1 figure, conference proceedings of the ELSA conference to be published by EDP Sciences in the EAS Series, Editors: C

Scientific paper

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.

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