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The Ubiquity of the Rapid Neutron-Capture Process
I. U. Roederer, J. J. Cowan, A. I. Karakas +5
To better characterize the abundance patterns produced by the r-process, we have derived new abundances or upper limits for the heavy elements zinc (Zn), yttrium (Y), lanthanum (La…
New Abundance Determinations of Cadmium, Lutetium, and Osmium in the r-process Enriched Star BD+173248
Ian U. Roederer, Christopher Sneden, James E. Lawler +1
We report the detection of Cd I (Z = 48), Lu II (Z = 71), and Os II (Z = 76) in the metal-poor star BD+173248. These abundances are derived from an ultraviolet spectrum obtained wi…
Characterizing the Chemistry of the Milky Way Stellar Halo: Detailed Chemical Analysis of a Metal-Poor Stellar Stream
Ian U. Roederer, Christopher Sneden, Ian B. Thompson +2
We present the results of a detailed abundance analysis of one of the confirmed building blocks of the Milky Way stellar halo, a kinematically-coherent metal-poor stellar stream. W…