Halo Star Abundances and Heavy Element Nucleosynthesis
Astrophysics
2007-05-23 v1
Abstract
We present new Hubble Space Telescope (HST) abundance observations of the neutron-capture elements Ge, Zr, Os and Pt in a group of 11 Galactic halo stars, including the well studied r-process rich CS 22892-052 and the r-process poor, bright giant HD 122563. Abundance comparisons indicate that the third r-process peak elements Pt and Os seem to be correlated with Eu (obtained with ground-based observations) in these metal-poor halo stars, suggesting a common origin or site for these three n-capture elements.
Cite
@article{arxiv.astro-ph/0405423,
title = {Halo Star Abundances and Heavy Element Nucleosynthesis},
author = {John J. Cowan and Christopher Sneden},
journal= {arXiv preprint arXiv:astro-ph/0405423},
year = {2007}
}
Comments
4 pages, 3 figures; To appear in the Proceedings of the 12th Workshop on Nuclear Astrophysics, eds. W. Hillebrandt and E. Muller