The effect of turbulent mixing on the g-mode spectrum of MS stars

Details The effect of turbulent mixing on the g-mode spectrum of MS stars The effect of turbulent mixing on the g-mode spectrum of MS stars

2007-12-20

arxiv.org/abs/0712.3481v1

Astronomy and Astrophysics

Astrophysics

6 pages, Astron. Nachrichten, accepted

Scientific paper

The understanding of transport processes inside the stars is one of the main goals of asteroseismology. Chemical turbulent mixing can affect the internal distribution of \mu near the energy generating core, having an effect on the evolutionary tracks similar to that of overshooting. This mixing 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 describe the effects of convective overshooting and turbulent mixing on the frequencies of gravity modes in B-type main sequence stars. In particular, the cases of p-g mixed modes in beta Cep stars and high-order modes in SPBs are considered.

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