Soubiran, C;
Jasniewicz, G;
Chemin, L;
Zurbach, C;
Brouillet, N;
Panuzzo, P;
Sartoretti, P;
... Turon, C; + view all
(2018)
Gaia Data Release 2: The catalogue of radial velocity standard stars.
Astronomy and Astrophysics
, 616
(2)
, Article A7. 10.1051/0004-6361/201832795.
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Abstract
AIMS: The Radial Velocity Spectrometer (RVS) on board the ESA satellite mission Gaia has 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 the Gaia observations. 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 in Gaia Data Release 2. The stars that were not used for calibration are used to validate the RVS data.
| Type: | Article |
|---|---|
| Title: | Gaia Data Release 2: The catalogue of radial velocity standard stars |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1051/0004-6361/201832795 |
| Publisher version: | https://doi.org/10.1051/0004-6361/201832795 |
| Language: | English |
| Additional information: | Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | catalogs–standards–techniques, radial velocities–stars, kinematics and dynamics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10056532 |
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