Published June 21, 2023 | Version v1
Dataset Open

An empirical model of the Gaia DR3 selection function

  • 1. Max Planck Institute for Astronomy

Description

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/

Files

Files (41.1 MB)

Name Size Download all
md5:4d80621b40aead69ee6759954b7292b2
4.7 MB Download
md5:6686e54478d222d81699a6f9e3226186
36.3 MB Download

Additional details

Related works

Is documented by
Journal article: 10.1051/0004-6361/202244784 (DOI)
Preprint: 10.48550/arXiv.2208.09335 (DOI)

Funding

GaiaUnlimited – Who is In, and Who is Not? Determining the Gaia Survey Selection Function 101004110
European Commission

References

  • Cantat-Gaudin et al. (2023) bibcode:2023A&A...669A..55C arXiv:2208.09335