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; D. Pollacco; E. K. Simpson; I. Skillen; J. Southworth; R. A. Street; R. G. West; P. J. Wheatley; P. L. Wood

doi:10.1051/0004-6361/201117230

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. ParleyD. Pollacco, E. K. Simpson, I. Skillen, J. Southworth, R. A. Street, R. G. West, P. J. Wheatley, P. L. Wood

^*Corresponding author for this work

Bristol Medical School (PHS)

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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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 delta Sct and gamma 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 delta 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 language	English
Article number	3
Number of pages	32
Journal	Astronomy and Astrophysics
Volume	535
DOIs	https://doi.org/10.1051/0004-6361/201117230
Publication status	Published - Nov 2011

Keywords

asteroseismology
stars: chemically peculiar
stars: oscillations
stars: variables: delta Scuti
techniques: photometric
ATMOSPHERIC VELOCITY-FIELDS
DELTA-SCUTI
KEPLER OBSERVATIONS
PRAESEPE CLUSTER
GAMMA-DORADUS
MAIN-SEQUENCE
METALLICISM
OSCILLATIONS
DISCOVERY
CATALOG

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Smalley, B., Kurtz, D. W., Smith, A. M. S., Fossati, L., Anderson, D. R., Barros, S. C. C., Butters, O. W., Cameron, A. C., 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., ... Wood, P. L. (2011). SuperWASP observations of pulsating Am stars. Astronomy and Astrophysics, 535, Article 3. https://doi.org/10.1051/0004-6361/201117230

@article{d876ab93491e45348146231e499dcc35,

title = "SuperWASP observations of pulsating Am stars",

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 delta Sct and gamma 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 delta 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.",

keywords = "asteroseismology, stars: chemically peculiar, stars: oscillations, stars: variables: delta Scuti, techniques: photometric, ATMOSPHERIC VELOCITY-FIELDS, DELTA-SCUTI, KEPLER OBSERVATIONS, PRAESEPE CLUSTER, GAMMA-DORADUS, MAIN-SEQUENCE, METALLICISM, OSCILLATIONS, DISCOVERY, CATALOG",

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

year = "2011",

month = nov,

doi = "10.1051/0004-6361/201117230",

language = "English",

volume = "535",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Smalley, B, Kurtz, DW, Smith, AMS, Fossati, L, Anderson, DR, Barros, SCC, Butters, OW, Cameron, AC, 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, 3. https://doi.org/10.1051/0004-6361/201117230

TY - JOUR

T1 - SuperWASP observations of pulsating Am stars

AU - Smalley, B.

AU - Kurtz, D. W.

AU - Smith, A. M. S.

AU - Fossati, L.

AU - Anderson, D. R.

AU - Barros, S. C. C.

AU - Butters, O. W.

AU - Cameron, A. Collier

AU - Christian, D. J.

AU - Enoch, B.

AU - Faedi, F.

AU - Haswell, C. A.

AU - Hellier, C.

AU - Holmes, S.

AU - Horne, K.

AU - Kane, S. R.

AU - Lister, T. A.

AU - Maxted, P. F. L.

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.

PY - 2011/11

Y1 - 2011/11

N2 - 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 delta Sct and gamma 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 delta 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.

AB - 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 delta Sct and gamma 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 delta 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.

KW - asteroseismology

KW - stars: chemically peculiar

KW - stars: oscillations

KW - stars: variables: delta Scuti

KW - techniques: photometric

KW - ATMOSPHERIC VELOCITY-FIELDS

KW - DELTA-SCUTI

KW - KEPLER OBSERVATIONS

KW - PRAESEPE CLUSTER

KW - GAMMA-DORADUS

KW - MAIN-SEQUENCE

KW - METALLICISM

KW - OSCILLATIONS

KW - DISCOVERY

KW - CATALOG

U2 - 10.1051/0004-6361/201117230

DO - 10.1051/0004-6361/201117230

M3 - Article (Academic Journal)

SN - 0004-6361

VL - 535

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - 3

ER -

SuperWASP observations of pulsating Am stars

Abstract

Keywords

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