<i>Gaia</i>Data Release 2
<i>Gaia</i>Data Release 2
Context. The second Gaia data release ( Gaia DR2) provides precise five-parameter astrometric data (positions, proper motions, and parallaxes) for an unprecedented number of sources (more than 1.3 billion, mostly stars). This new wealth of data will enable the undertaking of statistical analysis of many astrophysical problems that were previously …