EAS Publications Series
Volume 17, 2005Element Stratification in Stars: 40 Years of Atomic Diffusion
|Page(s)||353 - 356|
|Published online||13 January 2006|
G. Alecian, O. Richard and S. Vauclair (eds)
EAS Publications Series, 17 (2005) 353-356
Evolution of the abundances of the light elements C, Mg, Al in the amosphere of extremely metal-poor stars ([Fe/H] ≲ -3)
Observatoire de Paris-Meudon, Place
J. Janssen, 92195 Meudon Cedex, France
2 Observatoire de Paris, 61 Av. de l'Observatoire, 75014 Paris, France
3 GRAAL, Université de Montpellier II, 34095 Montpellier Cedex 05, France
4 European Southern Observatory, Casilla 19001, Santiago 19, Chile
We present briefly some results of the ESO Large Program “First Stars" where it is shown that the abundance ratios of some light elements in the atmospheres of the extremely metal poor stars varies when the star evolves. This could be explained by a mixing with deep layers but such a mixing is not predicted by the theory.
© EAS, EDP Sciences, 2005
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