Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-29T10:56:02.488Z Has data issue: false hasContentIssue false

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.
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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

Balachandran, S. 1990 ApJ 354, 310 Google Scholar
De Medeiros, J.R., Mayor, M. 1999 A&AS 139, 443 Google Scholar
do Nascimento, J.D. Jr, Charbonnel, C., Lèbre, A., de Laverny, P., de Medeiros, J.R., 1999, preprint (a) Google Scholar
do Nascimento, J.D. Jr., Vauclair, S. 2000, this conference (b) Google Scholar
Lèbre, A., de Laverny, P., De Medeiros, J.R., Charbonnel, C., da Silva, L. 1999, A&A, 345, 936 Google Scholar
Vauclair, S. 1991, in IAU Symp. 145, Evolution of Stars: the Photospheric Abundance Connection (Michaud, G., Tutukov, A.eds.) p. 327 Google Scholar
Vauclair, S. 2000, this conference Google Scholar