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Evolution of the abundances of the light elements C, Mg, Al in the amosphere ofextremely metal-poor stars ([Fe/H] ≲ -3)

Published online by Cambridge University Press:  13 January 2006


M. Spite
Affiliation:
Observatoire de Paris-Meudon, Place J. Janssen, 92195 Meudon Cedex, France
R. Cayrel
Affiliation:
Observatoire de Paris, 61 Av. de l'Observatoire, 75014 Paris, France
F. Spite
Affiliation:
Observatoire de Paris-Meudon, Place J. Janssen, 92195 Meudon Cedex, France
V. Hill
Affiliation:
Observatoire de Paris-Meudon, Place J. Janssen, 92195 Meudon Cedex, France
P. Francois
Affiliation:
Observatoire de Paris, 61 Av. de l'Observatoire, 75014 Paris, France
B. Plez
Affiliation:
GRAAL, Université de Montpellier II, 34095 Montpellier Cedex 05, France
E. Depagne
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile

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Abstract

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.


Type
Research Article
Copyright
© EAS, EDP Sciences, 2005

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Evolution of the abundances of the light elements C, Mg, Al in the amosphere of extremely metal-poor stars ([Fe/H] ≲ -3)
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Evolution of the abundances of the light elements C, Mg, Al in the amosphere of extremely metal-poor stars ([Fe/H] ≲ -3)
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Evolution of the abundances of the light elements C, Mg, Al in the amosphere of extremely metal-poor stars ([Fe/H] ≲ -3)
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