VizieR Online Data Catalog: Gaia DR2 radial velocity standard stars catalog (Soubiran+, 2018)
THÉVENIN, F.
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
GOSSET, E.
Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich [ULiège]
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Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich [ULiège]
Language
it
Autre document
This item was published in
2019
English Abstract
The Radial Velocity Spectrometer (RVS) on board of Gaia having no calibration device, the zero point of radial velocities needs to be calibrated with stars proved to be stable at the level of 300m/s during the Gaia ...Read more >
The Radial Velocity Spectrometer (RVS) on board of Gaia having no calibration device, the zero point of radial velocities needs to be calibrated with stars proved to be stable at the level of 300m/s during the Gaia observations. A dataset of about 71000 ground-based radial velocity measurements from five high resolution spectrographs has been compiled. A catalogue of 4813 stars was built by combining these individual measurements. The zero point has been established using asteroids. The resulting catalogue has 7 observations per star on average on a typical time baseline of 6 years, with a median standard deviation of 15m/s. A subset of the most stable stars fulfilling the RVS requirements has been used to establish the zero point of the radial velocities provided in Gaia DR2. The stars not used for calibration are used for the RVS data validation. (2 data files).Read less <
Italian Keywords
Surveys
Stars: standard
Radial velocities
Origin
Hal imported