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

Abstract

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.

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

Cited by in corpus (5)

• CLES, Code Liegeois d'Evolution Stellaire
• Influence of thermohaline convection on diffusion-induced iron accumulation in A stars
• A seismic approach to testing different formation channels of subdwarf B stars
• The $\beta$ Cep/SPB star 12 Lacertae: extended mode identification and complex seismic modelling
• SPB stars in the open SMC cluster NGC 371