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Results from the Wide Angle Search for Planets Prototype (WASP0) – II. Stellar variability in the Pegasus field
Authors:Stephen R. Kane  T. A. Lister  rew Collier Cameron  Keith Horne  David James  Don L. Pollacco  Rachel A. Street   Yiannis Tsapras
Affiliation:School of Physics &Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS;Department of Physics &Astronomy, Vanderbilt University, Nashville, TN 37235, USA;Laboratoire d'Astrophysique, Observatoire de Grenoble, BP 53, F-38041, Grenoble, Cedex 9, France;School of Mathematics and Physics, Queen's University, Belfast, University Road, Belfast, BT7 1NN;School of Mathematical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS
Abstract:Recent wide field photometric surveys, which target a specific field for long durations, are ideal for studying both long- and short-period stellar variability. Here, we report on 75 variable stars detected during the observations of a field in Pegasus using the Wide Angle Search for Planets Prototype (WASP0) instrument, 73 of which are new discoveries. The variables detected include 16 δ Scuti stars, 34 eclipsing binaries, 3 BY Draconis stars and 4 RR Lyraes. We estimate that the fraction of stars in the field brighter than   V ∼ 13.5  exhibiting variable behaviour with an amplitude greater than 0.6 per cent rms is ∼0.4 per cent. These results are compared with other wide field stellar variability surveys, and implications for detecting transits due to extra-solar planets are discussed.
Keywords:methods: binaries: eclipsing – stars: variables: other
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