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Rapidly varying A-type stars in the SuperWASP archive

Published online by Cambridge University Press:  18 February 2014

Daniel L. Holdsworth
Affiliation:
Astrophysics Group, Keele University, Staffordshire, ST5 5BG, United Kingdom email: d.l.holdsworth@keele.ac.uk
Barry Smalley
Affiliation:
Astrophysics Group, Keele University, Staffordshire, ST5 5BG, United Kingdom email: d.l.holdsworth@keele.ac.uk
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Abstract

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The searches for transiting exoplanets have produced a vast amount of time-resolved photometric data of many millions of stars. One of the leading ground-based surveys is the SuperWASP project. We present the initial results of a survey of over 1.5 million A-type stars in the search for high frequency pulsations using SuperWASP photometry. We are able to detect pulsations down to the 0.5 mmag level in the broad-band photometry. This has enabled the discovery of several rapidly oscillating Ap stars and over 200 δ Scuti stars with frequencies above 50 d−1, and at least one pulsating sdB star. Such a large number of results allows us to statistically study the frequency overlap between roAp and δ Scuti stars and probe to higher frequency regimes with existing data.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

References

Pollacco, D. L., Skillen, I., Collier Cameron, A., et al. 2006, PASP, 118, 140Google Scholar
Smalley, B., Kurtz, D. W., Smith, A. M. S., et al. 2011, A&A, 535, A3Google Scholar