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The Behavior of the Rotational Velocity in Lithium-Rich Evolved Stars

Published online by Cambridge University Press:  25 May 2016

C. H. F. Melo ,
B. B. Soares ,
A. C. Mirandar ,
J. R. P. Da Silva  and
J. R. De Medeiros
C. H. F. Melo
Affiliation:
1Geneva Observatory, Switzerland
B. B. Soares
Affiliation:
2Universidade Federal do Rio Grande do Norte, Natal, Brazil
A. C. Mirandar
Affiliation:
2Universidade Federal do Rio Grande do Norte, Natal, Brazil
J. R. P. Da Silva
Affiliation:
2Universidade Federal do Rio Grande do Norte, Natal, Brazil
J. R. De Medeiros
Affiliation:
2Universidade Federal do Rio Grande do Norte, Natal, Brazil

Extract

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We analyse the behavior of the projected rotational velocity vsin i for a sample of 20 lithium-rich evolved stars. Most of these stars show normal rotational velocity with respect to the typical lithium-normal evolved stars of the same spectral type. Stars presenting enhanced rotation show also high activity level. No sign of binarity was found for these lithium-rich evolved stars.

Type
6. Stellar Knowledge to and from Light Elements
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 508 - 509
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

De Medeiros, J. R., Mayor, M., 1999, A&AS 139, 433.Google Scholar
De Medeiros, J. R., Melo, C. H. F. and Mayor, M., 1996, A&A 309, 465.Google Scholar