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Processes competing with atomic diffusion: mass loss, turbulence, rotation, etc.

Published online by Cambridge University Press:  13 January 2006

G. Alecian ,
O. Richard ,
S. Vauclair  and
J.-P. Zahn
J.-P. Zahn*
Affiliation:
LUTH, Observatoire de Paris, 5 place Janssen, 92195 Meudon, France
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Abstract

Due to radiative acceleration and gravitational settling, stars would display vast differences in their surface composition, if these were not smoothed out, at least partly, by some competing processes. Possible mechanisms have been suggested and examined by Georges Michaud and his collaborators: mass loss, turbulent mixing and meridional circulation. They will be discussed here in the light of more recent developments.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 17: Element Stratification in Stars: 40 Years of Atomic Diffusion , 2005 , pp. 157 - 166
Copyright
© EAS, EDP Sciences, 2005

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