Temperature gradients in the core overshooting region

Details Temperature gradients in the core overshooting region Temperature gradients in the core overshooting region

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150..185g&link_type=abstract

Communications in Astroseismology, Vol. 150, p.185

Astronomy and Astrophysics

Astronomy

3

Scientific paper

The term overshooting is used to describe two situations: the chemical mixing induced by the convective elements crossing the boundary given by Schwarzschild's criterion (overshooting), or, in addition to that mixing, the change in the temperature gradient in the overshoot region when convection is efficient enough (penetration; Zahn 1991). We show that for models with the same mass of the mixed central region the oscillation frequencies are sensitive to the kind of overshoot treatment adopted. This effect is especially obvious for SPB stars and is high enough to be detected by CoRoT long run observations. That would imply the possibility of disentangling penetration from overshooting.

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