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Heavy element abundances in AGB stars. II. 47 Tucanae

Published online by Cambridge University Press:  23 December 2005

E.C. Wylie ,
P.L. Cottrell  and
C.A. Sneden
E.C. Wylie
Affiliation:
University of Canterbury, New Zealand email: [email protected]
P.L. Cottrell
Affiliation:
University of Canterbury, New Zealand email: [email protected]
C.A. Sneden
Affiliation:
University of Texas, USA
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Abstract

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This research forms the second part of an investigation into heavy element abundances in Asymptotic Giant Branch (AGB) stars in different stellar environments. High resolution spectroscopy was taken of seven known AGB stars in 47 Tucanae and spectrum synthesis undertaken to obtain abundances for s-process elements. Contrary to theoretical predictions, preliminary results show that these AGB stars do show s-process enhancements relative to previously studied Red Giant Branch (RGB) stars in the same cluster.

Keywords

Nucleosynthesisabundancestechniques: spectroscopicstars: AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S228: From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution , May 2005 , pp. 415 - 416
Copyright
© 2005 International Astronomical Union