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The mass of the white dwarf in GW Libra
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van Spaandonk, Lieke, Steeghs, D., Marsh, T. R. and Parsons, S. G. (2010) The mass of the white dwarf in GW Libra. Astrophysical Journal Letters, Vol.715 (No.2). L109-L112. doi:10.1088/2041-8205/715/2/L109 ISSN 2041-8205.
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WRAP_Steeghs_GW_Libra_1004.3065v1 (2).pdf - Accepted Version Download (371Kb) | Preview |
Official URL: http://dx.doi.org/10.1088/2041-8205/715/2/L109
Abstract
We report a mass and rotational broadening (v sin i) for the pulsating white dwarf (WD) component of the WZ Sge type Dwarf Nova GW Lib based on high-resolution Very Large Telescope spectroscopy that resolves the Mg II 4481 angstrom absorption feature. Its gravitational redshift combined with WD mass-radius models provides us with a direct measurement of the WD mass of M-1 = 0.84 +/- 0.02 M-circle dot. The line is clearly resolved and if associated with rotational broadening gives v sin i = 87.0 +/- 3.4 km s(-1), equivalent to a spin period of 97 +/- 12 s.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | White dwarf stars, Cataclysmic variable stars | ||||
Journal or Publication Title: | Astrophysical Journal Letters | ||||
Publisher: | IOP Publishing Ltd | ||||
ISSN: | 2041-8205 | ||||
Official Date: | 1 June 2010 | ||||
Dates: |
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Volume: | Vol.715 | ||||
Number: | No.2 | ||||
Number of Pages: | 4 | ||||
Page Range: | L109-L112 | ||||
DOI: | 10.1088/2041-8205/715/2/L109 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 3 December 2015 | ||||
Date of first compliant Open Access: | 3 December 2015 | ||||
Funder: | Science and Technology Facilities Council (Great Britain) (STFC) | ||||
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Data sourced from Thomson Reuters' Web of Knowledge
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