University of Hertfordshire

Discovering interacting binaries with Hα surveys

Research output: Chapter in Book/Report/Conference proceedingConference contribution


  • 901804

    Accepted author manuscript, 180 KB, PDF document

  • A.R. Witham
  • C. Knigge
  • J.E. Drew
  • P. Groot
  • R. Greimel
  • Q. A. Parker
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Original languageEnglish
Title of host publicationInteracting Binaries
Subtitle of host publicationAccretion, Evolution, Outcomes 2004
PublisherAmerican Institute of Physics
ISBN (Print)0-7354-0286-8
Publication statusPublished - 2005

Publication series

NameAIP Conf Procs
PublisherAmerican Institute of Physics


A deep (R ~ 19.5) photographic Hα 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 Hα 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 Hα-based searches in finding CVs. ©2005 American Institute of Physics

ID: 443234