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

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

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..268..441c&link_type=abstract

Light Elements in the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 268, p. 441-446

Astronomy and Astrophysics

Astronomy

Hydrodynamics, Instabilities, Stars: Abundances, Evolution, Rotation, Galaxy: Abundances

Scientific paper

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.

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