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Thermohaline mixing in stars : solving the long-standing 3He problem

Charbonnel, Corinne ; Lagarde, Nadège

In: Proceedings of the International Astronomical Union, 2009, vol. 5, no. S268, p. 441-446

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    Titre
    • Thermohaline mixing in stars
      solving the long-standing 3He problem
    Auteur
    • Charbonnel, Corinne. Geneva Observatory, University of Geneva, Chemin des Maillettes 51, 1290 Versoix, Switzerland email: Corinne.Charbonnel@unige.ch, Nadege.Lagarde@unige.ch
    • Lagarde, Nadège. Geneva Observatory, University of Geneva, Chemin des Maillettes 51, 1290 Versoix, Switzerland email: Corinne.Charbonnel@unige.ch, Nadege.Lagarde@unige.ch
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Proceedings of the International Astronomical Union, 2009, vol. 5, no. S268, p. 441-446. Cambridge University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:296990
    Summary
    Thermohaline mixing has been recently identified as the dominating process that governs the photospheric composition of low-mass bright giant stars (Charbonnel & Zahn 2007a). Here we present the predictions of stellar models computed with the code STAREVOL that takes into account this mechanism together with rotational mixing and atomic diffusion. We compare our theorical predictions with recent observations and discuss how the corresponding yields for 3He are compatible with the observed behaviour of this light element in our Galaxy