Discovering Interacting Binaries with Halpha Surveys

Details Discovering Interacting Binaries with Halpha Surveys Discovering Interacting Binaries with Halpha Surveys

2004-12-03

arxiv.org/abs/astro-ph/0412079v1

AIP Conf.Proc.797:643-646,2005

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. To appear in the proceedings of the conference Interacting Binaries in Cefalu, 2004

Scientific paper

10.1063/1.2130305

A deep (R ~ 19.5) photographic Halpha Survey of the southern Galactic Plane was recently completed using the UK Schmidt Telescope at the AAO. In addition, we have recently started a similar, CCD-based survey of the northern Galactic Plane using the Wide Field Camera on the INT. Both surveys aim to provide information on many types of emission line objects, such as planetary nebulae, luminous blue variables and interacting binaries. Here, we focus specifically on the ability of Halpha emission line surveys to discover cataclysmic variables (CVs). Follow-up observations have already begun, and we present initial spectra of a candidate CV discovered by these surveys. We also present results from analyzing the properties of known CVs in the Southern Survey. By calculating the recovery rate of these objects, we estimate the efficiency of Halpha-based searches in finding CVs.

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