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A catalogue of white dwarfs in Gaia EDR3
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Fusillo, N. P. Gentile, Tremblay, Pier-Emmanuel, Cukanovaite, Elena, Vorontseva, A., Lallement, R., Hollands, Mark A., Gaensicke, B. T., Burdge, K. B., McCleery, J. and Jordan, S. (2021) A catalogue of white dwarfs in Gaia EDR3. Monthly Notices of the Royal Astronomical Society, 508 (3). pp. 3877-3896. doi:10.1093/mnras/stab2672 ISSN 1365-2966.
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Official URL: https://doi.org/10.1093/mnras/stab2672
Abstract
We present a catalogue of white dwarf candidates selected from Gaia early data release three (EDR3). We applied several selection criteria in absolute magnitude, colour, and Gaia quality flags to remove objects with unreliable measurements while preserving most stars compatible with the white dwarf locus in the Hertzsprung-Russell diagram. We then used 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 Gaia absolute magnitude-colour space. Finally, we adopt the same method presented in our previous work on Gaia DR2 to calculate a probability of being a white dwarf (PWD) for ≃ 1.3 million sources which passed our quality selection. The PWD values can be used to select a sample of ≃ 359 000 high-confidence white dwarf candidates. We calculated stellar parameters (effective temperature, surface gravity, and mass) for all these stars by fitting Gaia astrometry and photometry with synthetic pure-H, pure-He and mixed H-He atmospheric models. We estimate an upper limit of 93 per cent for the overall completeness of our catalogue for white dwarfs with G ≤ 20 mag and effective temperature (Teff) >7000 K, at high Galactic latitudes (|b| > 20○). Alongside the main catalogue we include a reduced-proper-motion extension containing ≃ 10 200 white dwarf candidates with unreliable parallax measurements which could, however be identified on the basis of their proper motion. We also performed a cross-match of our catalogues with SDSS DR16 spectroscopy and provide spectral classification based on visual inspection for all resulting matches.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QB Astronomy | ||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||
| Library of Congress Subject Headings (LCSH): | White dwarf stars | ||||||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||||||
| Publisher: | Oxford University Press (OUP) | ||||||||||||
| ISSN: | 1365-2966 | ||||||||||||
| Official Date: | December 2021 | ||||||||||||
| Dates: |
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| Volume: | 508 | ||||||||||||
| Number: | 3 | ||||||||||||
| Page Range: | pp. 3877-3896 | ||||||||||||
| DOI: | 10.1093/mnras/stab2672 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Reuse Statement (publisher, data, author rights): | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society] ©: 2021 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| Copyright Holders: | C 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | ||||||||||||
| Date of first compliant deposit: | 10 November 2022 | ||||||||||||
| Date of first compliant Open Access: | 10 November 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
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