Rebassa-Mansergas, A., Gomez-Moran, A. Nebot, Schreiber, Matthias R., Gänsicke, B. T. (Boris T.), Schwope, A. D. (Axel D.), Gallardo, Juan C. and Koester, Detlev, 1941-. (2012) Post-common envelope binaries from SDSS - XIV. The DR7 white dwarf-main-sequence binary catalogue. Monthly Notices of the Royal Astronomical Society, Vol.419 (No.1). pp. 806-816. ISSN 0035-8711

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Abstract

We present an updated version of the spectroscopic white dwarf–main-sequence (WDMS) binary catalogue from the Sloan Digital Sky Survey (SDSS). 395 new systems are serendipitous discoveries from the spectroscopic SDSS I/II Legacy targets. As part of SDSS Extension for Galactic Understanding and Exploration (SEGUE), we have carried out a dedicated and efficient (64 per cent success rate) search for WDMS binaries with a strong contribution of the companion star, which were under-represented by all previous surveys, identifying 251 additional systems. In total, our catalogue contains 2248 WDMS binaries, and includes, where available, magnitudes from the GALEX All Sky Survey in the ultraviolet and from the United Kingdom Infrared Telescope (UKIRT) Infrared Sky Survey (UKIDSS) in the near-infrared. We also provide radial velocities of the companion stars, measured from the SDSS spectroscopy using the Na i λλ 8183.27, 8194.81 absorption doublet and/or the Hα emission. Using an updated version of our spectral decomposition/fitting technique we determine/update the white dwarf effective temperatures, surface gravities and masses, as well as the spectral type of the companion stars for the entire catalogue. Comparing the distributions of white dwarf mass, temperature and companion spectral type, we confirm that our SEGUE survey project has been successful in identifying WDMS binaries with cooler and more massive white dwarfs, as well as earlier spectral types found previously. Finally, we have developed a publicly available interactive online data base for spectroscopic SDSS WDMS binaries containing all available stellar parameters, radial velocities and magnitudes which we briefly describe.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Double stars, Low mass stars, White dwarf stars, Stars -- Evolution, Double stars -- Spectra, Asymptotic giant branch stars, Proto-planetary nebulae
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley-Blackwell Publishing, Inc
ISSN:	0035-8711
Date:	January 2012
Volume:	Vol.419
Number:	No.1
Page Range:	pp. 806-816
Identification Number:	10.1111/j.1365-2966.2011.19923.x
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Centre national d'études spatiales (France) (CNES), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) (FONDECYT)
Grant number:	3110049 (FONDECYT), 1100782 (FONDECYT), 60015 (CNES)
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URI:	http://wrap.warwick.ac.uk/id/eprint/40189

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