Towards a new full-sky list of radial velocity standard stars

Details Towards a new full-sky list of radial velocity standard stars Towards a new full-sky list of radial velocity standard stars

2010-10-04

arxiv.org/abs/1010.0613v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Astronomy & Astrophysics, in press, 8 pages, 8 figures

Scientific paper

The calibration of the Radial Velocity Spectrometer (RVS) onboard the ESA Gaia satellite (to be launched in 2012) requires a list of standard stars with a radial velocity (RV) known with an accuracy of at least 300 m/s. The IAU Commission 30 lists of RV standard stars are too bright and not dense enough. We describe the selection criteria due to the RVS constraints for building an adequate full-sky list of at least 1000 RV standards from catalogues already published in the literature. A preliminary list of 1420 candidate standard stars is built and its properties are shown. An important re-observation programme has been set up in order to ensure within it the selection of objects with a good stability until the end of the Gaia mission (around 2018). The present list of candidate standards is available at CDS and usable for many other projects.

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