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SuperWASP lightcurves of subdwarf stars
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Maxted, P. F. L., Norton, Andrew J., West, Richard G., Copperwheat, C. M. and Marsh, T. R. (2008) SuperWASP lightcurves of subdwarf stars. In: Hot Subdwarf Stars and Related Objects ASP Conference Series, Otto-Friedrich-Universität, Bamberg, Germany, 23-27 Jul 2007. Published in: Hot Subdwarf Stars and Related Objects ASP Conference Series, Vol.392
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Official URL: http://ukads.nottingham.ac.uk/abs/2008ASPC..392..1...
Abstract
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 PG 1348+369 is variable with a period of 3.316days 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 Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Dwarf stars | ||||
| Journal or Publication Title: | Hot Subdwarf Stars and Related Objects ASP Conference Series | ||||
| Official Date: | 2008 | ||||
| Dates: |
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| Volume: | Vol.392 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Description: | Proceedings of the conference held 23-27 July, 2007 |
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| Conference Paper Type: | Paper | ||||
| Title of Event: | Hot Subdwarf Stars and Related Objects ASP Conference Series | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Otto-Friedrich-Universität, Bamberg, Germany | ||||
| Date(s) of Event: | 23-27 Jul 2007 |
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