Reference : Discriminating between overshooting and rotational mixing in massive stars: any help fro...
Scientific congresses and symposiums : Paper published in a journal
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/135102
Discriminating between overshooting and rotational mixing in massive stars: any help from asteroseismology?
English
Miglio, Andrea mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
Montalban Iglesias, Josefa mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
Eggenberger, P. [> > > >]
Noels-Grötsch, Arlette mailto [> >]
1-Jul-2009
Communications in Asteroseismology
Verlag der Österreichischen Akademie der Wissenschaften
158
233-238
Yes
International
1021-2043
Wien
Austria
38th Liege International Astrophysical Colloquium: Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it"
July 7-11 2008
Liège
Belgium
[en] Chemical turbulent mixing induced by rotation can affect the internal distribution of μ near the energy-generating core of main-sequence stars, having an effect on the evolutionary tracks similar to that of overshooting. However, this mixing also leads to a smoother chemical composition profile near the edge of the convective core, which is reflected in the behavior of the buoyancy frequency and, therefore, in the frequencies of gravity modes. We show that for rotational velocities typical of main-sequence B-type pulsating stars, the signature of a rotationally induced mixing significantly perturbs the spectrum of gravity modes and mixed modes, and can be distinguished from that of overshooting. The cases of high-order gravity modes in Slowly Pulsating B stars and of low-order g modes and mixed modes in β Cephei stars are discussed.
http://hdl.handle.net/2268/135102
http://adsabs.harvard.edu/abs/2009CoAst.158..233M
http://arxiv.org/abs/0901.2045

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