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The not-so-extreme white dwarf of the CV GD 552

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Unda-Sanzana, E., Marsh, T. R., Gänsicke, B. T. (Boris T.), Maxted, P. F. L., Morales-Rueda, L., Dhillon, V. S., Thoroughgood, T. D., Tremou, E., Watson, C. A. and Hinojosa-Goni, R. (2009) The not-so-extreme white dwarf of the CV GD 552. Journal of Physics: Conference Series, Vol.172 (No.1). 012041. doi:10.1088/1742-6596/172/1/012041

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Official URL: http://dx.doi.org/10.1088/1742-6596/172/1/012041

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Abstract

GD 552 is a cataclysmic binary which was previously believed to be composed of an M-star and a white dwarf, the latter having an extreme mass of 1.4 solar masses. In a recent paper we showed that this is not compatible with new observational evidence and presented an alternative model in which the white dwarf has a typical mass and the companion is a brown dwarf, making the system a likely member of the elusive group of CVs which have already evolved through minimum orbital period. Here we present additional spectroscopical evidence supporting this conclusion by means of skew mapping.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): White dwarf stars
Journal or Publication Title: Journal of Physics: Conference Series
Publisher: Institute of Physics Publishing Ltd.
ISSN: 1742-6596
Official Date: July 2009
Dates:
DateEvent
July 2009Published
Volume: Vol.172
Number: No.1
Page Range: 012041
DOI: 10.1088/1742-6596/172/1/012041
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Chile. Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) (FONDECYT), Universidad Católica del Norte (Antofagasta, Chile), Particle Physics and Astronomy Research Council (Great Britain) (PPARC), Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Nederlands Organization for Scientific Research] (NWO)
Grant number: 220401-10602015 (UCN), 639.042.201 (NWO)
Version or Related Resource: Paper presented at: 16th European White Dwarfs Workshop, Barcelona, Spain, 30 June - 4 July 2008

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