Rapidly varying A-type stars in the SuperWASP archive

Holdsworth, Daniel Luke orcid iconORCID: 0000-0003-2002-896X and Smalley, Barry (2013) Rapidly varying A-type stars in the SuperWASP archive. Proceedings of the International Astronomical Union, 9 (S301). pp. 423-424. ISSN 1743-9213

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Official URL: http://dx.doi.org/10.1017/S1743921313014865


Abstract. 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.

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