Gaia Data Release 2 Variable stars in the colour-absolute magnitude diagram

0511170 - ASÚ 2020 RIV FR eng J - Journal Article
Eyer, L. - Rimoldini, L. - Audard, M. - Anderson, R.S. - Nienartowicz, K. - Glass, F. - Marchal, O. - Grenon, M. - Koubský, Pavel - Votruba, Viktor … Total 456 authors
Gaia Data Release 2 Variable stars in the colour-absolute magnitude diagram.
Astronomy & Astrophysics. Roč. 623, March (2019), č. článku A110. ISSN 0004-6361. E-ISSN 1432-0746
Institutional support: RVO:67985815
Keywords : variables stars * oscillations * eclipsing binaries
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.636, year: 2019
Method of publishing: Open access

We showcase stellar variability in the Galactic colour-absolute magnitude diagram (CaMD). We focus on pulsating, eruptive, and cataclysmic variables, as well as on stars that exhibit variability that is due to rotation and eclipses. Gaia enables the first investigation of Galactic variable star populations in the CaMD on a similar, if not larger, scale as was previously done in the Magellanic Clouds. Although the observed colours are not corrected for reddening, distinct regions are visible in which variable stars occur. We determine variable star fractions to within the current detection thresholds of Gaia. Finally, we report the most complete description of variability-induced motion within the CaMD to date.

Permanent Link: http://hdl.handle.net/11104/0301507