Results from the Wide Angle Search for Planets Prototype (WASP0) – II. Stellar variability in the Pegasus field |
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| Authors: | Stephen R Kane T A Lister rew Collier Cameron Keith Horne David James Don L Pollacco Rachel A Street Yiannis Tsapras |
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| Institution: | 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 |
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| 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. |
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| Keywords: | methods: binaries: eclipsing – stars: variables: other |
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