SOUBIRAN, C.; JASNIEWICZ, Gérard; CHEMIN, L.; CRIFO, F.; UDRY, S.; HESTROFFER, D.; KATZ, D.

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SOUBIRAN, C.
M2A 2012

JASNIEWICZ, Gérard
Groupe de Recherche en Astronomie et Astrophysique du Languedoc [GRAAL]

CHEMIN, L.
SSE 2012

Langue

Communication dans un congrès

Ce document a été publié dans

SF2A-2012: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, 2012sf2a.conf...71S - SF2A-2012:. Eds.: S. Boissier, P. de Laverny, N. Nardetto, R. Samadi, D. Valls-Gabaud and H. Wozniak pp.71-74 Nice 5-8 juin 2012 France, 2012sf2a.conf...71S - SF2A-2012:. Eds.: S. Boissier, P. de Laverny, N. Nardetto, R. Samadi, D. Valls-Gabaud and H. Wozniak pp.71-74 Nice 5-8 juin 2012 France, -, 2012, Nice. 2012-12p. 71-74

Résumé en anglais

The Radial Velocity Spectrograph (RVS) on board of Gaia needs to be calibrated using stable reference stars known in advance. A catalogue has being built for that purpose, including 1420 radial velocity standard star candidates selected on strict criteria in order to fulfill the Gaia-RVS requirements. We have undertaken a large programme of ground based observations in 2006 to monitor these stars and verify their stability which has to be better than 300 m s^{-1} over several years. We report 6536 radial velocity measurements for the 1420 stars. For a mean time baseline of 5.9 years, nearly 95% of the candidates (1394 stars) fulfill the stability criterion of 300 m s^{-1}. 80.4% have a stability better than 100 m s^{-1}. We compared our measurements to other sources.< Réduire

Mots clés en anglais

Catalogs

Radial Velocities

Stars: kinematics and dynamics

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804