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S-process abundances in globular clusters: M4 vs. M5 and NGC 1851

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Date

2008

Authors

Yong, David
Grundahl, Frank
Karakas, Amanda
Lambert, D.L.

Journal Title

Journal ISSN

Volume Title

Publisher

American Institute of Physics (AIP)

Abstract

We present s-process abundances for giant stars in the globular clusters M4, M5, and NGC 1851. We find that all s-process elements are overabundant in M4 relative to M5. Curiously, the abundances of Cu and Zn are also overabundant in M4 which may offer clues to the synthesis of these elements. For NGC 1851, we find that the abundances of the s-process elements Zr and La exhibit a large dispersion. The abundances of Zr and La also appear to have a bimodal distribution reinforcing the idea that there are two stellar populations in this cluster.

Description

Keywords

Keywords: Abundances; Chemical Composition; Giant and Subgiant Stars; Globular Clusters in the Milky Way

Citation

URI

http://hdl.handle.net/1885/58564

Collections

ANU Research Publications

Source

AIP Conference Proceedings

Type

Conference paper

Book Title

Entity type

Access Statement

License Rights

DOI

10.1063/1.2916968

Restricted until

2037-12-31

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