The initial Gaia source list⋆
1 INAF – Osservatorio Astrofisico di Torino, Strada Osservatorio 20, 10025 Pino Torinese, TO Italy
2 INAF–Istituto di Astrofisica Spaziale e Fisica Cosmica, via Piero Gobetti, 101, 40129 Bologna, Italy
Received: 20 May 2014
Accepted: 25 June 2014
Aims. We describe the production of the Initial Gaia Source List (IGSL) used both as the starting point for observation-matching in the Gaia data processing and as a comparison catalog to trigger early science alerts.
Methods. The IGSL was compiled from large scale public catalogs and a few specific catalogs provided by the Gaia Consortium. For all entries, a Gaia G magnitude is estimated and all objects with a G< 21.0 were included.
Results. The catalog has 1222598530 entries with the J2000 ICRF positions, proper motions, classification (star/non-star), and estimates of the Gaia G, Gaia Grvs, Guide Star Catalog red (RF) and blue (BJ) magnitudes. It is available from the Centre de Données astronomiques de Strasbourg.
Key words: catalogs / surveys / astrometry
The catalog is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (220.127.116.11) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/570/A87
© ESO, 2014