A Catalogue of White Dwarf Candidates from Gaia DR3
A catalogue of white dwarfs in Gaia EDR3
We present a catalogue of white dwarf candidates selected from the early data release three (edr3) of the galactic satellite.We apply several selection criteria in absolute magnitude and colour to remove objects with unreliable parallax measurements while preserving most stars compatible with the white dwarf locusin the hertzsprung-russell diagram.We then use a sample of over 30 000 spectroscopically confirmed white dwarfs and contaminants from the sloan digital sky survey (sdss) to map the distribution of these objects in the absolute magnitude-colour space.Finally, we adopt the same method presented in our previous work to calculate a probability of being a white dwarf(pwd)for million sources which passed our quality selection.The probability of being a white dwarf can be used to select a sample of 000 high-confidence high-confidence white dwarf candidates in the magnitude range 8<g <21.5.We calculated stellar parameters (effective temperature, surface gravity, and mass) for all these stars by fitting the photometry and astrometry with synthetic models.We estimate an upper limit of 93 per cent completeness for the overall completeness of our catalogue for white dwarfs with g mag and effective temperature(teff)>7000k, at high galactic latitudes (|b|>20{\deg}).We also include a reduced-proper-motion extension containing 200 white dwarf candidates with unreliable parallax measurements which could,however be identified on the basis of their proper motion.
