
arXiv: 1804.09370
Aims.The Radial Velocity Spectrometer (RVS) on board the ESA satellite missionGaiahas no calibration device. Therefore, the radial velocity zero point needs to be calibrated with stars that are proved to be stable at a level of 300 m s−1during theGaiaobservations.Methods.We compiled a dataset of ~71 000 radial velocity measurements from five high-resolution spectrographs. A catalogue of 4813 stars was built by combining these individual measurements. The zero point was established using asteroids.Results.The resulting catalogue has seven observations per star on average on a typical time baseline of 6 yr, with a median standard deviation of 15 m s−1. A subset of the most stable stars fulfilling the RVS requirements was used to establish the radial velocity zero point provided inGaiaData Release 2. The stars that were not used for calibration are used to validate the RVS data.
Aérospatiale, astronomie & astrophysique, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], stars: kinematics and dynamics, Physique, chimie, mathématiques & sciences de la terre, kinematics and dynamics, FOS: Physical sciences, catalogs – standards – techniques: radial velocities – stars: kinematics and dynamics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics - Astrophysics of Galaxies, 520, catalogs–standards–techniques, [SDU] Sciences of the Universe [physics], radial velocities–stars, Physical, chemical, mathematical & earth Sciences, Astrophysics - Solar and Stellar Astrophysics, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), techniques: radial velocities, standards, Space science, astronomy & astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], catalogs, Solar and Stellar Astrophysics (astro-ph.SR)
Aérospatiale, astronomie & astrophysique, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], stars: kinematics and dynamics, Physique, chimie, mathématiques & sciences de la terre, kinematics and dynamics, FOS: Physical sciences, catalogs – standards – techniques: radial velocities – stars: kinematics and dynamics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics - Astrophysics of Galaxies, 520, catalogs–standards–techniques, [SDU] Sciences of the Universe [physics], radial velocities–stars, Physical, chemical, mathematical & earth Sciences, Astrophysics - Solar and Stellar Astrophysics, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), techniques: radial velocities, standards, Space science, astronomy & astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], catalogs, Solar and Stellar Astrophysics (astro-ph.SR)
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