A Gaia DR2 Mock Stellar Catalog
Abstract
We present a mock catalog of Milky Way stars, matching in volume and depth the content of the Gaia data release 2 (GDR2). We generated our catalog using Galaxia, a tool to sample stars from a Besançon Galactic model, together with a realistic 3D dust extinction map. The catalog mimics the complete GDR2 data model and contains most of the entries in the Gaia source catalog: five-parameter astrometry, three-band photometry, radial velocities, stellar parameters, and associated scaled nominal uncertainty estimates. In addition, we supplemented the catalog with extinctions and photometry for non-Gaia bands. This catalog can be used to prepare GDR2 queries in a realistic runtime environment, and it can serve as a Galactic model against which to compare the actual GDR2 data in the space of observables. The catalog is hosted through the virtual observatory GAVO’s Heidelberg data center (http://dc.g-vo.org/tableinfo/gdr2mock.main) service, and thus can be queried using ADQL as for GDR2 data.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- July 2018
- DOI:
- 10.1088/1538-3873/aabd70
- arXiv:
- arXiv:1804.01427
- Bibcode:
- 2018PASP..130g4101R
- Keywords:
-
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 8 pages, 7 figures, 9 queries, accepted by PASP, catalog is available from http://dc.g-vo.org/tableinfo/gdr2mock.main and topcat queriable