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Meridional Circulation, Turbulence and Lithium in Sub-Giants Originating from the Hot Side of the Dip

Published online by Cambridge University Press:  25 May 2016

Suzanne Talon  and
Corinne Charbonnel
Suzanne Talon
Affiliation:
Départ. de Physique, Université de Montréal, and CERCA, Canada
Corinne Charbonnel
Affiliation:
Laboratoire d’Astrophysique de Toulouse, France

Abstract

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We present the impact of meridional circulation and shear turbulence on the evolution of the lithium abundance at the surface of evolved stars originating from the hot side of the Li Dip. We show that our fully consistent treatment of the same hydrodynamical processes which can account for C and N anomalies in B type stars (Talon et al. 1997) and for the shape of the hot side of the Li dip in open clusters (Talon & Charbonnel 1998) also explains Li observations in stars with Teff higher than 7000K on the main sequence as well as in their evolved counterparts (see also Charbonnel & Talon 1999).

Type
6. Stellar Knowledge to and from Light Elements
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 516 - 517
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

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