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

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

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jphcs.172a2041u&link_type=abstract

Journal of Physics: Conference Series, Volume 172, Issue 1, pp. 012041 (2009).

Physics

Scientific paper

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.

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