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 Besancon Galactic model, together with a realistic 3D dust extinction map. The catalog mimicks the complete GDR2 data model and contains most of the entries in the Gaia source catalog: 5-parameter astrometry, 3-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 service and thus can be queried using ADQL as for GDR2 data.

8 pages, 7 figures, 9 queries, accepted by PASP, catalog is available from http://dc.g-vo.org/tableinfo/gdr2mock.main and topcat queriable

References in corpus (3)

• The Gaia mission
• Improving PARSEC models for very low mass stars
• New PARSEC evolutionary tracks of massive stars at low metallicity: testing canonical stellar evolution in nearby star forming dwarf galaxies

Cited by in corpus (46)

• Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18
• A time-resolved picture of our Milky Way's early formation history
• Mapping the Stellar Halo with the H3 Spectroscopic Survey
• Synthetic Gaia surveys from the FIRE cosmological simulations of Milky Way-mass galaxies
• All-Sky Dynamical Response of the Galactic Halo to the Large Magellanic Cloud
• Resolving the Metallicity Distribution of the Stellar Halo with the H3 Survey
• Discovery of Tidal Tails in Disrupting Open Clusters: Coma Berenices and a Neighbor Stellar Group
• The Separation Distribution of Ultra-Wide Binaries across Galactic Populations
• Revisiting hypervelocity stars after Gaia DR2
• Not all stars form in clusters -- $Gaia$-DR2 uncovers the origin of OB associations
• Orbital Clustering Identifies the Origins of Galactic Stellar Streams
• Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations
• New stellar encounters discovered in the second Gaia data release
• An all-sky proper motion map of the Sagittarius stream using Gaia DR2
• Stellar mass distribution and star formation history of the Galactic disk revealed by mono-age stellar populations from LAMOST
• Full 5D characterisation of the Sagittarius stream with Gaia DR2 RR Lyrae
• Diagnosing the Stellar Population and Tidal Structure of the Blanco1 Star Cluster
• The tale of the tail -- disentangling the high transverse velocity stars in Gaia DR2
• Exploring the Galactic Warp Through Asymmetries in the Kinematics of the Galactic Disk
• A Gaia DR 2 and VLT/FLAMES search for new satellites of the LMC
• A Gaia early DR3 mock stellar catalog: Galactic prior and selection function
• Different Fates of Young Star Clusters After Gas Expulsion
• The COMBS Survey -- II. Distinguishing the Metal-Poor Bulge from the Halo Interlopers
• Lifetime of short-period binaries measured from their Galactic kinematics
• Prolonged sub-luminous state of the new transitional pulsar candidate CXOU J110926.4-650224
• Multi-epoch X-ray burst modelling: MCMC with large grids of 1D simulations
• The non-monotonic, strong metallicity dependence of the wide-binary fraction
• Revealing the Complicated Story of the Cetus Stream with StarGO
• Structure of the outer Galactic disc with Gaia-DR2
• Warp and flare of the Galactic disc revealed with supergiants by Gaia EDR3
• The luminosity evolution of nova shells -- I. A new analysis of old data
• From birth associations to field stars: mapping the small-scale orbit distribution in the Galactic disc
• Ancient Very Metal-Poor Stars Associated With the Galactic Disk in the H3 Survey
• The outer disc in shambles: blind detection of Monoceros and ACS with Gaia's astrometric sample
• Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys
• Enhancement of Double-Close-Binary Quadruples
• A Deep, High-Angular Resolution 3D Dust Map of the Southern Galactic Plane
• Towards a fully consistent Milky Way disk model -- IV. The impact of Gaia DR2 and APOGEE
• Pearls on a String: Numerous Stellar Clusters Strung along the Same Orbit
• Spatial and Kinematic Clustering of Stars in the Galactic Disk
• Machine Learning the 6th Dimension: Stellar Radial Velocities from 5D Phase-Space Correlations
• The missing radial velocities of Gaia: blind predictions for DR3
• Quiescent X-ray variability in the neutron star Be/X-ray transient GRO J1750-27
• GalaxyFlow: Upsampling Hydrodynamical Simulations for Realistic Mock Stellar Catalogs
• The missing radial velocities of Gaia: a catalogue of Bayesian estimates for DR3