Published 2019 | Version v1
Publication

VizieR Online Data Catalog: Gaia DR2 radial velocity standard stars catalog (Soubiran+, 2018)

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Description

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).

Abstract

rvstdcat.dat 4813x270 Mean radial velocities on absolute scale; rvstdmes.dat 71225x76 Original ground-based radial velocity; measurements

Abstract

VizieR On-line Data Catalog: J/A+A/616/A7. Originally published in: 2018A&A...616A...7S

Additional details

Identifiers

URL
https://hal.archives-ouvertes.fr/hal-02282399
URN
urn:oai:HAL:hal-02282399v1