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 proceedingConference PaperResearch

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 languageEnglish
Title of host publicationNinth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics
Pages226-229
Number of pages4
Volume1001
DOIs
Publication statusPublished - 1 Dec 2008
Externally publishedYes
EventTorino Workshop on Evolution and Nucleosynthesis in AGB Stars and Perugia Workshop on Nuclear Astrophysics 2007 - Perugia, Italy
Duration: 22 Oct 200726 Oct 2007
Conference number: 9th
http://inspirehep.net/record/878004

Conference

ConferenceTorino Workshop on Evolution and Nucleosynthesis in AGB Stars and Perugia Workshop on Nuclear Astrophysics 2007
CountryItaly
CityPerugia
Period22/10/0726/10/07
Internet address

Keywords

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

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