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Pulsations of massive stars beyond TAMS: effects of mass loss, diffusion, overshooting

Published online by Cambridge University Press:  23 January 2015

Jakub Ostrowski  and
Jadwiga Daszyńska-Daszkiewicz
Jakub Ostrowski
Affiliation:
Instytut Astronomiczny, Uniwersytet Wrocławski, ul. Kopernika 11, 51-622 Wrocław, Poland email: ostrowski@astro.uni.wroc.pl
Jadwiga Daszyńska-Daszkiewicz
Affiliation:
Instytut Astronomiczny, Uniwersytet Wrocławski, ul. Kopernika 11, 51-622 Wrocław, Poland email: ostrowski@astro.uni.wroc.pl
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Abstract

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We present an influence of mass loss, element diffusion and convective overshooting on instability areas of SPBsg stars with masses of 13 - 18 M⊙. Evolutionary phases before and after helium core ignition are considered. We discuss how these effects affect the structure of the blue loops and hence a coverage of instability areas.

Keywords

stars: early-typestars: supergiantsstars: oscillationsstars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 226 - 227
Copyright
Copyright © International Astronomical Union 2015 

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