We present the results of a survey using the WASP archive to search for high frequency pulsations in F-, A- and B-type stars. Over 1.5 million targets have been searched for pulsations with amplitudes greater than 0.5 millimagnitude. We identify over 350 stars which pulsate with periods less than 30 min. Spectroscopic follow-up of selected targets has enabled us to confirm 10 new rapidly oscillating Ap stars, 13 pulsating Am stars and the fastest known δ Scuti star. We also observe stars which show pulsations in both the high-frequency domain and in the low-frequency δ Scuti range. This work shows the power of the WASP photometric survey to find variable stars with amplitudes well below the nominal photometric precision per observation.
@article{arxiv.1401.3199,
title = {High frequency A-type pulsators discovered using SuperWASP},
author = {Daniel L. Holdsworth and B. Smalley and M. Gillon and K. I. Clubb and J. Southworth and P. F. L. Maxted and D. R. Anderson and S. C. C. Barros and A. Collier Cameron and L. Delrez and F. Faedi and C. A. Haswell and C. Hellier and K. Horne and E. Jehin and A. J. Norton and D. Pollacco and I. Skillen and A. M. S. Smith and R. G. West and P. J. Wheatley},
journal= {arXiv preprint arXiv:1401.3199},
year = {2015}
}
Comments
19 pages, 26 figures, accepted for publication in MNRAS