Data mining for dwarf novae in SDSS, GALEX and astrometric catalogues
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 2010
- DOI:
- 10.1111/j.1365-2966.2009.15894.x
- arXiv:
- arXiv:0910.3218
- Bibcode:
- 2010MNRAS.402..436W
- Keywords:
-
- stars: dwarf novae;
- novae;
- cataclysmic variables;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Accepted for publication in MNRAS