SuperWASP observations of pulsating Am stars

B. Smalley, D. W. Kurtz, A. M S Smith, L. Fossati, D. R. Anderson, S. C C Barros, O. W. Butters, A. Collier Cameron, D. J. Christian, B. Enoch, F. Faedi, C. A. Haswell, C. Hellier, S. Holmes, K. Horne, S. R. Kane, T. A. Lister, P. F L Maxted, A. J. Norton, N. Parley & 8 others D. Pollacco, E. K. Simpson, I. Skillen, J. Southworth, R. A. Street, R. G. West, P. J. Wheatley, P. L. Wood

Research output: Contribution to journalArticle

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Abstract

We have studied over 1600 Am stars at a photometric precision of 1 mmag with SuperWASP photometric data. Contrary to previous belief, we find that around 200 Am stars are pulsating δ Sct and γ Dor stars, with low amplitudes that have been missed in previous, less extensive studies. While the amplitudes are generally low, the presence of pulsation in Am stars places a strong constraint on atmospheric convection, and may require the pulsation to be laminar. While some pulsating Am stars have been previously found to be δ Sct stars, the vast majority of Am stars known to pulsate are presented in this paper. They will form the basis of future statistical studies of pulsation in the presence of atomic diffusion.

Original languageEnglish
Article numberA3
JournalAstronomy and Astrophysics
Volume535
DOIs
Publication statusPublished - 31 Oct 2011
Externally publishedYes

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atmospheric convection
stars
convection

Keywords

  • Asteroseismology
  • Stars: chemically peculiar
  • Stars: oscillations
  • Stars: variables: delta Scuti
  • Techniques: photometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Smalley, B., Kurtz, D. W., Smith, A. M. S., Fossati, L., Anderson, D. R., Barros, S. C. C., ... Wood, P. L. (2011). SuperWASP observations of pulsating Am stars. Astronomy and Astrophysics, 535, [A3]. https://doi.org/10.1051/0004-6361/201117230

SuperWASP observations of pulsating Am stars. / Smalley, B.; Kurtz, D. W.; Smith, A. M S; Fossati, L.; Anderson, D. R.; Barros, S. C C; Butters, O. W.; Collier Cameron, A.; Christian, D. J.; Enoch, B.; Faedi, F.; Haswell, C. A.; Hellier, C.; Holmes, S.; Horne, K.; Kane, S. R.; Lister, T. A.; Maxted, P. F L; Norton, A. J.; Parley, N.; Pollacco, D.; Simpson, E. K.; Skillen, I.; Southworth, J.; Street, R. A.; West, R. G.; Wheatley, P. J.; Wood, P. L.

In: Astronomy and Astrophysics, Vol. 535, A3, 31.10.2011.

Research output: Contribution to journalArticle

Smalley, B, Kurtz, DW, Smith, AMS, Fossati, L, Anderson, DR, Barros, SCC, Butters, OW, Collier Cameron, A, Christian, DJ, Enoch, B, Faedi, F, Haswell, CA, Hellier, C, Holmes, S, Horne, K, Kane, SR, Lister, TA, Maxted, PFL, Norton, AJ, Parley, N, Pollacco, D, Simpson, EK, Skillen, I, Southworth, J, Street, RA, West, RG, Wheatley, PJ & Wood, PL 2011, 'SuperWASP observations of pulsating Am stars', Astronomy and Astrophysics, vol. 535, A3. https://doi.org/10.1051/0004-6361/201117230
Smalley B, Kurtz DW, Smith AMS, Fossati L, Anderson DR, Barros SCC et al. SuperWASP observations of pulsating Am stars. Astronomy and Astrophysics. 2011 Oct 31;535. A3. https://doi.org/10.1051/0004-6361/201117230
Smalley, B. ; Kurtz, D. W. ; Smith, A. M S ; Fossati, L. ; Anderson, D. R. ; Barros, S. C C ; Butters, O. W. ; Collier Cameron, A. ; Christian, D. J. ; Enoch, B. ; Faedi, F. ; Haswell, C. A. ; Hellier, C. ; Holmes, S. ; Horne, K. ; Kane, S. R. ; Lister, T. A. ; Maxted, P. F L ; Norton, A. J. ; Parley, N. ; Pollacco, D. ; Simpson, E. K. ; Skillen, I. ; Southworth, J. ; Street, R. A. ; West, R. G. ; Wheatley, P. J. ; Wood, P. L. / SuperWASP observations of pulsating Am stars. In: Astronomy and Astrophysics. 2011 ; Vol. 535.
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AU - Norton, A. J.

AU - Parley, N.

AU - Pollacco, D.

AU - Simpson, E. K.

AU - Skillen, I.

AU - Southworth, J.

AU - Street, R. A.

AU - West, R. G.

AU - Wheatley, P. J.

AU - Wood, P. L.

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