期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
卷 130, 期 989, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1538-3873/aabd70
关键词
virtual observatory tools; astronomical databases: miscellaneous; catalogs; parallaxes; proper motions; stars: kinematics and dynamics; stars: luminosity function; mass function; stars: statistics; Galaxy: general
资金
- DLR (German space agency) [50 QG 1403]
- European Research Council under the European Unions Seventh Framework Programme ERC [321035]
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 Besancon 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.
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