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Rotation and Lithium Abundances in Evolved Stars

Published online by Cambridge University Press:  26 May 2016

A. Lèbre ,
P. de Laverny ,
J.D. do Nascimento Jr.  and
J.R. de Medeiros
A. Lèbre
Affiliation:
Groupe d'Astrophysique, CNRS & University of Montpellier, France
P. de Laverny
Affiliation:
Dept FRESNEL, Observatoire de la Côte d'Azur, Nice, France
J.D. do Nascimento Jr.
Affiliation:
Dfte, UFRN, Natal, Brazil
J.R. de Medeiros
Affiliation:
Dfte, UFRN, Natal, Brazil

Abstract

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For a sample of 57 evolved stars (spectral type from F5III to G5III), typically stars located near and along the Hertzsprung gap, we derived lithium abundances from spectral synthesis method compared to new high resolution spectroscopic data. Lithium is detected for about half of this large sample stars and high Li-contents (ALi > 2.8) are reported for 8 stars. We examined the Li abundances along Teff, v sin i, the single/binary status and along the stellar mass and the evolutionary status (inferred from the HIPPARCOS data).

Type
Session 2 Rotation in Relation with Abundances and Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 240 - 241
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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