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Gaia white dwarfs within 40 pc III : spectroscopic observations of new candidates in the southern hemisphere
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(2023) Gaia white dwarfs within 40 pc III : spectroscopic observations of new candidates in the southern hemisphere. Monthly Notices of the Royal Astronomical Society, 518 (2). pp. 3055-3073. doi:10.1093/mnras/stac3303 ISSN 1365-2966.
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Official URL: https://doi.org/10.1093/mnras/stac3303
Abstract
We present a spectroscopic survey of 248 white dwarf candidates within 40 pc of the Sun; of these 244 are in the southern hemisphere. Observations were performed mostly with the Very Large Telescope (X-Shooter) and Southern Astrophysical Research Telescope. Almost all candidates were selected from Gaia Data Release 3 (DR3). We find a total of 246 confirmed white dwarfs, 209 of which had no previously published spectra, and two main-sequence star contaminants. Of these, 100 white dwarfs display hydrogen Balmer lines, 69 have featureless spectra, and two show only neutral helium lines. Additionally, 14 white dwarfs display traces of carbon, while 37 have traces of other elements that are heavier than helium. We observe 35 magnetic white dwarfs through the detection of Zeeman splitting of their hydrogen Balmer or metal spectral lines. High spectroscopic completeness (> 97 per cent) has now been reached, such that we have 1058 confirmed Gaia DR3 white dwarfs out of 1083 candidates within 40 pc of the Sun at all declinations.
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, Stars, Solar system, Astrophysics | |||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||||||||||||||||||||||||||
Publisher: | Oxford University Press (OUP) | |||||||||||||||||||||||||||||||||||||||
ISSN: | 1365-2966 | |||||||||||||||||||||||||||||||||||||||
Official Date: | January 2023 | |||||||||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 518 | |||||||||||||||||||||||||||||||||||||||
Number: | 2 | |||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 3055-3073 | |||||||||||||||||||||||||||||||||||||||
DOI: | 10.1093/mnras/stac3303 | |||||||||||||||||||||||||||||||||||||||
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 © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | |||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||||||||
Copyright Holders: | © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | |||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 24 April 2023 | |||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 24 April 2023 | |||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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