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Gaia white dwarfs within 40 pc - III. Spectroscopic observations of new candidates in the Southern hemisphere

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 G...

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Main Authors: O'Brian, Mairi (Author) , Tremblay, Pier-Emmanuel (Author) , Gentile Fusillo, N P (Author) , Hollands, M. A. (Author) , Gänsicke, B. T. (Author) , Koester, D. (Author) , Pelisoli, I. (Author) , Cukanovaite, E. (Author) , Cunningham, T. (Author) , Doyle, A. E. (Author) , Elms, A. (Author) , Farihi, J. (Author) , Hermes, J. J. (Author) , Holberg, J (Author) , Jordan, Stefan (Author) , Klein, B. L. (Author) , Kleinman, S. J. (Author) , Manser, C. J. (Author) , De Martino, D. (Author) , Marsh, T. R. (Author) , McCleery, J. (Author) , Melis, C. (Author) , Nitta, A. (Author) , Parsons, S. G. (Author) , Raddi, R. (Author) , Rebassa-Mansergas, A. (Author) , Schreiber, M. R. (Author) , Silvotti, R. (Author) , Steeghs, D. (Author) , Toloza, O. (Author) , Toonen, S. (Author) , Torres, S. (Author) , Weinberger, A. J. (Author) , Zuckerman, B. (Author)
Format: Article (Journal)
Language:English
Published: 2023, Jan
In: Monthly notices of the Royal Astronomical Society
Year: 2023, Volume: 518, Issue: 2, Pages: 3055-3073
ISSN:1365-2966
DOI:10.1093/mnras/stac3303
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stac3303
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Author Notes:Mairi W. O’Brien, P.-E. Tremblay, N.P. Gentile Fusillo, M.A. Hollands, B.T. Gänsicke, D. Koester, I. Pelisoli, E. Cukanovaite, T. Cunningham, A.E. Doyle, A. Elms, J. Farihi, J.J. Hermes, J. Holberg, S. Jordan, B.L. Klein, S.J. Kleinman, C.J. Manser, D. De Martino, T.R. Marsh, J. McCleery, C. Melis, A. Nitta, S.G. Parsons, R. Raddi, A. Rebassa-Mansergas, M.R. Schreiber, R. Silvotti, D. Steeghs, O. Toloza, S. Toonen, S. Torres, A.J. Weinberger and B. Zuckerman
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Summary: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 Description:Gesehen am 25.01.2024
Physical Description:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/stac3303

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