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Massive stellar models: rotational evolution, metallicity effects

  • Sylvia Ekström (a1), Cyril Georgy (a1), Georges Meynet (a1), André Maeder (a1) and Anahí Granada (a1) (a2)...

Abstract

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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Keywords

Massive stellar models: rotational evolution, metallicity effects

  • Sylvia Ekström (a1), Cyril Georgy (a1), Georges Meynet (a1), André Maeder (a1) and Anahí Granada (a1) (a2)...

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