A first look at cataclysmic variable stars from the 2dF QSO survey

Details A first look at cataclysmic variable stars from the 2dF QSO survey A first look at cataclysmic variable stars from the 2dF QSO survey

2001-08-21

arxiv.org/abs/astro-ph/0108334v1

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures. Proceedings of the Goettingen conference on Cataclysmic Variable Stars, Goettingen, August 2001

Scientific paper

The 2dF QSO survey is a spectroscopic survey of 48,000 point-sources selected by colour with magnitudes in the range 18.35 < B < 20.95. Amongst QSOs, white dwarfs, narrow-line galaxies and other objects are some cataclysmic variables (CVs). This survey should be sensitive to intrinsically faint CVs. In the standard picture of CV evolution, these form the majority of the CV population. We present the spectra of 6 CVs from this survey. Four have the spectra of dwarf novae and two are magnetic CVs. We present evidence that suggests that the dwarf novae have period P < 2 h and are indeed intrinsically less luminous than average. However, it is not clear yet whether these systems are present in the large numbers predicted.

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