Massive stellar models: rotational evolution, metallicity effects

Details Massive stellar models: rotational evolution, metallicity effects Massive stellar models: rotational evolution, metallicity effects

2010-10-19

arxiv.org/abs/1010.3838v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

11 pages, 7 figures, to appear in the proceedings of IAUS 272 "Active OB stars: structure, evolution, mass loss and critical l

Scientific paper

The Be star phenomenon is related to fast rotation, although the cause of this fast rotation is not yet clearly established. The basic effects of fast rotation on the stellar structure are reviewed: oblateness, mixing, anisotropic winds. The processes governing the evolution of the equatorial velocity of a single star (transport mechanisms and mass loss) are presented, as well as their metallicity dependence. The theoretical results are compared to observations of B and Be stars in the Galaxy and the Magellanic Clouds.

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