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The effects of μ gradients on pulsations of rapidly rotating stars

Published online by Cambridge University Press:  12 July 2011

Daniel R. Reese ,
Francisco Espinosa Lara  and
Michel Rieutord
Daniel R. Reese
Affiliation:
LESIA, CNRS UMR 8109, Observatoire de Paris, 92195 Meudon, France, email: daniel.reese@obspm.fr
Francisco Espinosa Lara
Affiliation:
GEPI, CNRS UMR 8111, Observatoire de Paris, 92195 Meudon, France, email: francisco.espinosa@obspm.fr
Michel Rieutord
Affiliation:
LATT, CNRS UMR 5572, Université de Toulouse, 31400 Toulouse, France email: rieutord@ast.obs-mip.fr
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Abstract

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Recently, Reese et al. (2008), Lignières & Georgeot (2008) and Lignières & Georgeot (2009) showed that the frequencies of low-degree acoustic modes in rapidly rotating stars, also known as “island modes”, follow an asymptotic formula, the coefficients of which can be deduced from ray dynamics. We investigate how this asymptotic behaviour is affected by μ gradients by comparing pulsation spectra from models with and without such a discontinuity.

Keywords

stars: oscillationsstars: rotationstars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 535 - 536
Copyright
Copyright © International Astronomical Union 2011

References

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