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High-frequency A-type pulsators discovered using SuperWASP

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Cameron_2014_MNRAS_HighFrequency.pdf (5.866Mb)
Date
01/04/2014
Author
Holdsworth, Daniel L.
Smalley, B.
Gillon, M.
Clubb, K. I.
Southworth, J.
Maxted, P. F. L.
Anderson, D. R.
Barros, S. C. C.
Cameron, A. Collier
Delrez, L.
Faedi, F.
Haswell, C. A.
Hellier, C.
Horne, K.
Jehin, E.
Norton, A. J.
Pollacco, D.
Skillen, I.
Smith, A. M. S.
West, R. G.
Wheatley, P. J.
Keywords
Asteroseismology
Techniques: photometric
Surveys
Stars: chemically peculiar
Stars: oscillations
Sstars: variables: δ Scuti
Rapidly oscillating AP
Delta-scuti
ROAP stars
Kepler observations
Atmospheric parameters
Planet-detection
Radial-velocity
Metallic-line
Sky survey
Catalog
QB Astronomy
QC Physics
Metadata
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Abstract
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.
Citation
Holdsworth , D L , Smalley , B , Gillon , M , Clubb , K I , Southworth , J , Maxted , P F L , Anderson , D R , Barros , S C C , Cameron , A C , Delrez , L , Faedi , F , Haswell , C A , Hellier , C , Horne , K , Jehin , E , Norton , A J , Pollacco , D , Skillen , I , Smith , A M S , West , R G & Wheatley , P J 2014 , ' High-frequency A-type pulsators discovered using SuperWASP ' , Monthly Notices of the Royal Astronomical Society , vol. 439 , no. 2 , pp. 2078-2095 . https://doi.org/10.1093/mnras/stu094
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
DOI
https://doi.org/10.1093/mnras/stu094
ISSN
0035-8711
Type
Journal article
Rights
© 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
Collections
  • University of St Andrews Research
URL
http://mnras.oxfordjournals.org/content/439/2/2078/suppl/DC1
URI
http://hdl.handle.net/10023/5384

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