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Li Abundance in Evolved Stars of NGC 6397

Published online by Cambridge University Press:  25 May 2016

D.M. Allen ,
B.V. Castilho ,
L. Pasquini ,
B. Barbuy  and
P. Molaro
D.M. Allen
Affiliation:
(1)Departamento de Astronomia, Instituto Astron⊚mico e Geofísico, Universidade de Sāo Paulo, Caixa Postal 3386, 01060-970, Brazil
B.V. Castilho
Affiliation:
(1)Departamento de Astronomia, Instituto Astron⊚mico e Geofísico, Universidade de Sāo Paulo, Caixa Postal 3386, 01060-970, Brazil
L. Pasquini
Affiliation:
(2)European Southern Observatory, Karl Schwarzschild Strasse 2, D-85748 Garching bei M¨nchen, Germany
B. Barbuy
Affiliation:
(1)Departamento de Astronomia, Instituto Astron⊚mico e Geofísico, Universidade de Sāo Paulo, Caixa Postal 3386, 01060-970, Brazil
P. Molaro
Affiliation:
(3)Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, I-34131 Trieste, Italy

Abstract

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Five giants and 11 subgiants of the metal-poor globular cluster NGC 6397 are analysed. In this Poster we present the lithium abundances derived. The present Li abundances and those of turnoff stars by Pasquini & Molaro (1996) are complementary in terms of stellar evolution stage, and show the Li abundances decreasing off the main sequence along the red giant branch.

Type
4. Lithium Abundances
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 354 - 355
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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