An empirical model of the Gaia DR3 selection function

Zenodo (CERN European Organization for Nuclear Research)

Abstract

Precomputed maps of the M10 parameter used to predict the completeness of the Gaia DR3 source catalogue. allsky_M10_hpx7.hdf5 is a tessellation of the whole sky in Galactic nested healpix scheme of order 7. allsky_uniq_10.fits uses an adaptive resolution and is based on the 'uniq' numbering of healpix tiles. Regions of higher density use a finer resolution, up to order 10, chosen so that every tile contains a minimum of twenty sources to compute M10 from. Paper: https://ui.adsabs.harvard.edu/abs/2023A%26A...669A..55C/abstract Tutorial using the GaiaUnlimited python package to query these maps: https://github.com/gaia-unlimited/gaiaunlimited/blob/main/docs/notebooks/dr3-empirical-completeness.ipynb Documentation for the GaiaUnlimited package: https://gaiaunlimited.readthedocs.io/en/latest/

Authors 1

1. T. Cantat-Gaudin corresponding

   Max Planck Institute for Astronomy

   Affiliation as printed

   Max Planck Institute for Astronomy