Effects of "extra-mixing" processes on the periods of high-order gravity modes in main-sequence stars

Abstract

In main-sequence stars, the chemical composition gradient that develops at the edge of the convective core is responsible for a non-uniform period spacing of high-order gravity modes. In this work we investigate, in the case of a 1.6 Msun star, the effects on the period-spacing of extra mixing processes in the core (such as diffusion and overshooting).

arXiv comment4 pages, 3 figures, to appear in the proceedings of JENAM 2005, Liege 4-7 July 2005

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