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

David Yong; Frank Grundahl; Amanda Karakas; David L. Lambert

doi:10.1063/1.2916968

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

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

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

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.

Original language	English
Title of host publication	Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics
Pages	226-229
Number of pages	4
Volume	1001
DOIs	https://doi.org/10.1063/1.2916968
Publication status	Published - 1 Dec 2008
Externally published	Yes
Event	Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and Perugia Workshop on Nuclear Astrophysics 2007 - Perugia, Italy Duration: 22 Oct 2007 → 26 Oct 2007 Conference number: 9th http://inspirehep.net/record/878004

Conference

Conference	Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and Perugia Workshop on Nuclear Astrophysics 2007
Country	Italy
City	Perugia
Period	22/10/07 → 26/10/07
Internet address	http://inspirehep.net/record/878004

Keywords

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

Access to Document

10.1063/1.2916968

Link to publication in Scopus

Cite this

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title = "S-process abundances in globular clusters: M4 vs. M5 and NGC 1851",

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.",

keywords = "Abundances, Chemical Composition, Giant and Subgiant Stars, Globular Clusters in the Milky Way",

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Yong, D, Grundahl, F, Karakas, A & Lambert, DL 2008, S-process abundances in globular clusters: M4 vs. M5 and NGC 1851. in Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics. vol. 1001, pp. 226-229, Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and Perugia Workshop on Nuclear Astrophysics 2007, Perugia, Italy, 22/10/07. https://doi.org/10.1063/1.2916968

S-process abundances in globular clusters : M4 vs. M5 and NGC 1851. / Yong, David; Grundahl, Frank; Karakas, Amanda; Lambert, David L.

Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics. Vol. 1001 2008. p. 226-229.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

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AB - 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.

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