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Lithium destruction induced by planetary accretion in solar-type stars

Published online by Cambridge University Press:  23 April 2010

Sylvie Théado ,
Elise Bohuon  and
Sylvie Vauclair
Sylvie Théado
Affiliation:
Laboratoire d'Astrophysique de Toulouse et Tarbes, CNRS, Université de Toulouse; 14 avenue Edouard Belin, 31400 Toulouse, France email: sylvie.vauclair@ast.obs-mip.fr
Elise Bohuon
Affiliation:
Laboratoire d'Astrophysique de Toulouse et Tarbes, CNRS, Université de Toulouse; 14 avenue Edouard Belin, 31400 Toulouse, France email: sylvie.vauclair@ast.obs-mip.fr
Sylvie Vauclair
Affiliation:
Laboratoire d'Astrophysique de Toulouse et Tarbes, CNRS, Université de Toulouse; 14 avenue Edouard Belin, 31400 Toulouse, France email: sylvie.vauclair@ast.obs-mip.fr
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Abstract

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Accretion of planetary (metal-rich) material onto a star in its early phases can produce episodes of thermohaline convection below the outer convective zone. These extra-mixing phases lead to rapid lithium destruction. The observed dispersion of lithium abundances in solar-type stars can be related to such events.

Keywords

Stars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S268: Light Elements in the Universe , November 2009 , pp. 427 - 428
Copyright
Copyright © International Astronomical Union 2010

References

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