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Proceedings Paper

Post-iron-peak element production in stars: challenges for atomic and nuclear physics
Author(s): Christopher A. Sneden
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Paper Abstract

The abundances of rare earth elements in metal-poor stars of the Galactic halo are reexamined in light of new publications oflaboratory transition probabilities of these elements. The species Nd H, Sm II, Gd II, and Ce II are considered in some detail, and it is suggested that the abundances for Sm and Nd now are fairly reliable, while more work should be clone on Gd and especially Ce. The revised abundances are compared to predictions of neutron capture theories, and it is argued that the Nd/Sm abundance ratio now is in closer agreement with r-process nucleosynthesis than seen in previous papers. Finally, suggestions are made for future work for transition probabilities, for stellar observations, and for nucleosynthesis theory.

Paper Details

Date Published: 1 December 1990
PDF: 11 pages
Proc. SPIE 1318, Optical Spectroscopic Instrumentation and Techniques for the 1990s: Applications in Astronomy, Chemistry, and Physics, (1 December 1990); doi: 10.1117/12.22094
Show Author Affiliations
Christopher A. Sneden, Univ. of Texas/Austin (United States)


Published in SPIE Proceedings Vol. 1318:
Optical Spectroscopic Instrumentation and Techniques for the 1990s: Applications in Astronomy, Chemistry, and Physics
Bernard J. McNamara; Jeremy M. Lerner, Editor(s)

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