Skip to main content

Research Repository

Advanced Search

λ Bootis stars in the SuperWASP survey

Paunzen, E.; Skarka, M.; Walczak, P.; Holdsworth, D.L.; Smalley, B.; West, R.G.; Janík, J.

λ Bootis stars in the SuperWASP survey Thumbnail


E. Paunzen

M. Skarka

P. Walczak

D.L. Holdsworth

R.G. West

J. Janík


We have analysed around 170 000 individual photometric WASP (Wide Angle Search for Planets) measurements of 15 well-established ? Bootis stars to search for variability. The ? 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.


Paunzen, E., Skarka, M., Walczak, P., Holdsworth, D., Smalley, B., West, R., & Janík, J. (2015). λ Bootis stars in the SuperWASP survey. Monthly Notices of the Royal Astronomical Society, 453(2), 1241 -1248.

Journal Article Type Article
Acceptance Date Jul 20, 2015
Online Publication Date Aug 24, 2015
Publication Date Oct 21, 2015
Publicly Available Date May 26, 2023
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 453
Issue 2
Pages 1241 -1248
Keywords techniques photometric, stars, chemically peculiar, variables, d Scuti
Publisher URL


You might also like

Downloadable Citations