Journal Article

Data mining for dwarf novae in SDSS, GALEX and astrometric catalogues

Patrick Wils, Boris T. Gänsicke, Andrew J. Drake and John Southworth

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 402, issue 1, pages 436-446
Published in print February 2010 | ISSN: 0035-8711
Published online February 2010 | e-ISSN: 1365-2966 | DOI:
Data mining for dwarf novae in SDSS, GALEX and astrometric catalogues

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By cross-matching blue objects from the Sloan Digital Sky Survey with Galaxy Evolution Explorer and the astrometric catalogues USNO-B1.0, GSC2.3 and CMC14, 64 new dwarf nova candidates with one or more observed outbursts have been identified. 14 of these systems are confirmed as cataclysmic variables through existing and follow-up spectroscopy. A study of the amplitude distribution and an estimate of the outburst frequency of these new dwarf novae and those discovered by the Catalina Real-time Transient Survey indicate that besides systems that are faint because they are farther away, there also exists a population of intrinsically faint dwarf novae with rare outbursts.

Keywords: stars: dwarf novae; novae, cataclysmic variables

Journal Article.  7080 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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