RR Lyrae stars in the Gaia era

Autor:	Clementini, Gisella
Rok vydání:	2016
Předmět:	Astrophysics - Astrophysics of Galaxies Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
Popis:	Gaia, the European Space Agency spacecraft successfully launched on 19 December 2013, entered into nominal science operations on 18 July 2014 after a few months of commissioning, and has been scanning the sky to a faint limit of G = 20.7 mag since then. Gaia is expected to observe more than a hundred thousand RR Lyrae stars in the Galactic halo and bulge (most of which will be new discoveries), and to provide parallax measurements with about 10 {\mu}as uncertainty for those brighter than $\sim$ 12-13 mag. Status and activities of the spacecraft since launch are briefly reviewed with emphasis on preliminary results obtained for RR Lyrae stars observed in the Large Magellanic Cloud during the first 28 days of science operations spent in Ecliptic Pole scanning mode and in light of the first Gaia data release which is scheduled for summer 2016. Comment: Invited review in: RR Lyrae 2015 - High-Precision Studies of RR Lyrae stars, Visegrad, Hungary, October 19-22, 2015, 8 pages. To be published in Communications from the Konkoly Observatory of the Hungarian Academy of Sciences Vol. 105
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1602.01104 Zobrazit plný text záznamu View this record from Arxiv