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Lithium and Rotation on the Subgiant Branch. A Theoretical Analysis of Observations

Published online by Cambridge University Press:  25 May 2016

J. D. do Nascimento Jr. ,
C. Charbonnel ,
A. Lèbre ,
P. De Laverny  and
J. R. de Medeiros
J. D. do Nascimento Jr.
Affiliation:
1Laboratoire d’Astrophysique de Toulouse, 16 Avenue E. Belin, 31400 Toulouse, Fr 4Departamento de Física, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, R.N., Br
C. Charbonnel
Affiliation:
1Laboratoire d’Astrophysique de Toulouse, 16 Avenue E. Belin, 31400 Toulouse, Fr
A. Lèbre
Affiliation:
2GRAAL, Université Montpellier II, F—34095 Montpellier Cedex, Fr
P. De Laverny
Affiliation:
3Observatoire de la C⊚te d’Azur, BP 4229, 06304 Nice CEDEX 4, Fr
J. R. de Medeiros
Affiliation:
4Departamento de Física, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, R.N., Br

Abstract

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Lithium abundances, determined for 120 subgiant stars in Lèbre et al. (1999), are analyzed and compared with predictions for dilution. To this purpose, the evolutionary status of the sample as well as the individual masses have been determined. We look for the distributions of A(Li) and Vsini with mass when those stars evolve along the subgiant branch. Our results bring a new light on the Lithium and rotation discontinuities in evolved phases.

Type
4. Lithium Abundances
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 362 - 363
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

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