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Gaia and variable stars

Published online by Cambridge University Press:  06 January 2014

Laurent Eyer ,
Berry Holl  and
Nami Mowlavi
Laurent Eyer
Affiliation:
Department of Astronomy, Geneva University, 1290 Sauverny, Switzerland email: [email protected]
Berry Holl
Affiliation:
Department of Astronomy, Geneva University, 1290 Sauverny, Switzerland email: [email protected]
Nami Mowlavi
Affiliation:
Department of Astronomy, Geneva University, 1290 Sauverny, Switzerland email: [email protected]
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Abstract

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The study of variable phenomena (periodic, irregular or transient) provides a unique way to acquire knowledge about objects in our Universe. Currently, we are going through a rapid expansion of time-domain astrophysics. One reason for this expansion is the technological developments materialised in small to medium size observational projects such as HAT, OGLE, Catalina, PTF and upcoming very large projects such as Gaia or LSST.

In this article, we are focusing on the ESA cornerstone mission Gaia. This spacecraft will provide astrometric, photometric and spectroscopic measurements for one billion stars. Among the existing and planned multi-epoch projects Gaia is unique because it will provide exquisite astrometric measurements for all objects it observes. We provide a brief overview of the literature concerning this mission and its expected contribution to variability studies.

Keywords

space vehiclesastrometrymethods: statisticaltechniques: radial velocitiestechniques: photometricstars: binaries: eclipsingstars: variables
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 265 - 268
Copyright
Copyright © International Astronomical Union 2014 

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