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Rapidly varying A-type stars in the SuperWASP archive

Smalley

Authors



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 d 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 d Scuti stars and probe to higher frequency regimes with existing data.

Acceptance Date Feb 18, 2014
Publication Date Feb 18, 2014
Journal Proceedings of the International Astronomical Union
Print ISSN 1743-9213
Publisher Cambridge University Press
Pages 423- 424
DOI https://doi.org/10.1017/S1743921313014865
Keywords surveys; asteroseismology; techniques:photometric; stars:chemically peculiar; stars:variables:roAp; stars:variables:scuti
Publisher URL https://doi.org/10.1017/S1743921313014865