[en] 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 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Holdsworth, Daniel L.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Smalley, B.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Clubb, K. I.; Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
Southworth, J.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Maxted, P. F. L.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Anderson, D. R.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Barros, S. C. C.; Aix-Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, F-13388 Marseille, France
Cameron, A. Collier; SUPA, School of Physics & Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Delrez, Laetitia ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Faedi, F.; Department of Physics, University of Warwick, Coventry CV4 7AL, UK
Haswell, C. A.; Department of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
Hellier, C.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Horne, K.; SUPA, School of Physics & Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Norton, A. J.; Department of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
Pollacco, D.; Department of Physics, University of Warwick, Coventry CV4 7AL, UK
Skillen, I.; Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de la Palma, Tenerife, Spain
Smith, A. M. S.; N. Copernicus Astronomical Centre, Polish Academy of Sciences, Bartycka 18, PL-00-716 Warsaw, Poland
West, R. G.; Department of Physics, University of Warwick, Coventry CV4 7AL, UK
Wheatley, P. J.; Department of Physics, University of Warwick, Coventry CV4 7AL, UK)
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