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SuperWASP Lightcurves of Subdwarf Stars

Maxted, P. F. L.; Norton, A. J.; West, R. G.; Copperwheat, C. and Marsh, T. R. (2008). SuperWASP Lightcurves of Subdwarf Stars. In: Hot Subdwarf Stars and Related Objects, 23-27 Jul 2007, Bamberg, Germany.

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SuperWASP is a wide angle survey for transiting hot-Jupiter exoplanets around bright (V<13) solar-type stars. Lightcurves for millions of stars with a few thousand observations per star are available in the SuperWASP archive. We report the results of a search for periodic variable subdwarf stars in the data from the 2004 observing season. A Fourier transform of the SuperWASP lightcurve for Balloon 090100001 recovers the main pulsation frequency of this star. No new pulsators are found among the stars studied (about 200 objects). The binary sdB star HS 2333+3927 with a large reflection effect was recovered. We find that the hot subdwarf PG1348+369 is variable with a period of 3.316 days and a semi-amplitude of 13%. Follow-up spectroscopy shows that this variation is due to irradiation of a cool companion star in a binary system.

Item Type: Conference or Workshop Item
Copyright Holders: 2007 The Authors
Extra Information: Click here to view other publications available on this repository relating to the SuperWASP Project.
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 11648
Depositing User: Astrid Peterkin
Date Deposited: 11 Sep 2008 06:54
Last Modified: 22 Jun 2020 02:59
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