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Insights into the s-process and r-process as revealed by globular clusters

Published online by Cambridge University Press:  09 March 2010

D. Yong ,
A. I. Karakas ,
D. L. Lambert ,
A. Chieffi  and
M. Limongi
D. Yong
Affiliation:
Australian National University, Mount Stromlo Observatory, Australia
A. I. Karakas
Affiliation:
Australian National University, Mount Stromlo Observatory, Australia
D. L. Lambert
Affiliation:
W. J. McDonald Observatory, University of Texas, Austin, TX, USA
A. Chieffi
Affiliation:
Istituto Nazionale di Astrofisica, Istituto di Astrofisica Spaziale e Fisica Cosmica, Rome, Italy
M. Limongi
Affiliation:
Istituto Nazionale di Astrofisica-Osservatorio Astronomico di Roma, Rome, Italy
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Abstract

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We present abundance measurements for a large number of neutron-capture elements in giant stars of the globular clusters M4, M5, and M13. The relative abundance ratios differ between all three clusters. For all clusters, we find that the mean abundances for the elements from Ba to Hf can be well explained by scaled versions of the solar s- and r-process abundances, albeit with different mixtures of s- and r-process material for each clusters.

Keywords

Galaxy: abundancesglobular clusters: individual (M4, M5, M13)stars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 54 - 56
Copyright
Copyright © International Astronomical Union 2010

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