PAUNZEN, Ernst, Marek SKARKA, Przemyslaw WALCZAK, Daniel L. HOLDSWORTH, Barry SMALLEY, Richard G. WEST and Jan JANÍK. Lambda Bootis stars in the SuperWASP survey. Monthly Notices of the Royal Astronomical Society. Priestley and Weale, 2015, vol. 453, No 2, p. 1241-1248. ISSN 0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stv1652.
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Basic information
Original name Lambda Bootis stars in the SuperWASP survey
Name in Czech Lambda Bootis hvězdy v prohlídce SuperWASP
Authors PAUNZEN, Ernst (40 Austria, guarantor, belonging to the institution), Marek SKARKA (203 Czech Republic, belonging to the institution), Przemyslaw WALCZAK (616 Poland), Daniel L. HOLDSWORTH (826 United Kingdom of Great Britain and Northern Ireland), Barry SMALLEY (826 United Kingdom of Great Britain and Northern Ireland), Richard G. WEST (826 United Kingdom of Great Britain and Northern Ireland) and Jan JANÍK (203 Czech Republic, belonging to the institution).
Edition Monthly Notices of the Royal Astronomical Society, Priestley and Weale, 2015, 0035-8711.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 4.952
RIV identification code RIV/00216224:14310/15:00083981
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1093/mnras/stv1652
UT WoS 000363486000006
Keywords in English techniques: photometric; stars: chemically peculiar; stars: variables: delta Scuti
Tags AKR, rivok
Tags International impact, Reviewed
Changed by Changed by: RNDr. Jan Janík, Ph.D., učo 17241. Changed: 4/4/2019 11:03.
Abstract
We have analysed around 170 000 individual photometric WASP (Wide Angle Search for Planets) measurements of 15 well-established lambda Bootis stars to search for variability. The lambda Bootis stars are a small group of late-B to early-F, Pop I, stars that show moderate to extreme (surface) underabundances (up to a factor 100) of most Fe-peak elements, but solar abundances of lighter elements (C, N, O and S). They are excellent laboratories for the study of fundamental astrophysical processes such as diffusion, meridional circulation, stellar winds and accretion in the presence of pulsation. From the 15 targets, 8 are variable and 7 are apparently constant with upper limits between 0.8 and 3.0 mmag. We present a detailed time-series analysis and a comparison with previously published results. From an asteroseismologic study, we conclude that the found chemical peculiarities are most probably restricted to the surface.
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