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New Constraints on the Rotation-Induced Mixing in Stars, from Lithium Observations in Main Sequence F-Type Stars and Subglants

Published online by Cambridge University Press:  12 April 2016

Corinne Charbonnel  and
Sylvie Vauclair
Corinne Charbonnel
Affiliation:
Observatoire Midi-Pyrénées, 14, av.E.Belin, 31400 Toulouse, France
Sylvie Vauclair
Affiliation:
Observatoire Midi-Pyrénées, 14, av.E.Belin, 31400 Toulouse, France

Abstract

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Observations of lithium in F type main sequence stars and subgiants lead to specific constraints on the rotation-induced mixing. The fact that lithium is smoothly depleted in subgiants down to factors as large as 1000 at the end of the sequence can be explained if lithium suffered extra depletion inside the star while it was on the main sequence. We propose a simple consistent model, based on the discussion of rotation-induced mixing developed by Chaboyer and Zahn (1992), which could account for these observations, as well as the observations of lithium on the main sequence.

Type
III. Input physics for stellar structure
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 284 - 286
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

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