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Published February 11, 2010 | Supplemental Material + Published
Journal Article Open

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.

Additional Information

© 2009 The Authors. Journal compilation © 2009 RAS. Accepted 2009 October 16. Received 2009 October 16; in original form 2009 September 1. This study made use of Simbad and VizieR (Ochsenbein et al. 2000), the USNOFS Image and Catalogue Archive operated by the United States Naval Observatory, Flagstaff Station, optical images generated by the NEAT through the Skymorph website and of data provided by the GALEX mission and the SDSS. GALEX is a NASA small explorer, launched in 2003 April. It is operated for NASA by Caltech under NASA contract NAS5-98034. Funding for the SDSS has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho and the Max Planck Society. The SDSS web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the participating institutions. The participating institutions are The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, Los Alamos National Laboratory, the Max Planck Institute for Astronomy, the Max Planck Institute for Astrophysics, New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory and the University of Washington. The CSS survey is funded by the National Aeronautics and Space Administration under Grant No. NNG05GF22G issued through the Science Mission Directorate Near-Earth Objects Observations Programme. The CRTS survey is supported by the U.S. National Science Foundation under grant No. AST-0909182. This paper is based in part on observations made with the William Herschel Telescope operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrof´ısica de Canarias and on observations (GN-2008A-Q-86 and GS-2009A-Q-73) obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Minist´erio da Ciˆencia e Tecnologia (Brazil) and Ministerio de Ciencia, Tecnologa e Innovaci´on Productiva (Argentina). We thank Areg Mickaelian for providing us with copies of the paper by Hovanissian (1978, 1982). We also thank the referee, Christian Knigge, for his constructive remarks to improve the paper.

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Published - Wils2010p7174Mon_Not_R_Astron_Soc.pdf

Supplemental Material - sm001.zip

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Created:
August 21, 2023
Modified:
October 20, 2023