Instability strips of main sequence B stars: a parametric study of iron enhancement

Details Instability strips of main sequence B stars: a parametric study of iron enhancement Instability strips of main sequence B stars: a parametric study of iron enhancement

2006-11-30

arxiv.org/abs/astro-ph/0611944v1

Astronomy and Astrophysics

Astrophysics

2 pages, to appear in the proceedings of "Vienna Workshop on the Future of Asteroseismology", September 20-22, 2006

Scientific paper

10.1553/cia150s209

The discovery of beta Cephei stars in low metallicity environments, as well as the difficulty to theoretically explain the excitation of the pulsation modes observed in some beta Cephei and SPB stars, suggest that the iron opacity ``bump'' provided by standard models could be underestimated. We investigate, by means of a parametric study, the effect of a local iron enhancement on the location of the beta Cephei and SPB instability strips.

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