72 citations · 199 across the 4 of their papers we have counts for
4 papers
r-Process Abundance Signatures in Metal-Poor Halo Stars
John J. Cowan, Ian U. Roederer, Christopher Sneden +1
Abundance observations indicate the presence of rapid-neutron capture (i.e., r-process) elements in old Galactic halo and globular cluster stars. Recent observations of the r-proce…
Primordial r-process Dispersion in Metal-Poor Globular Clusters
Ian U. Roederer
Heavy elements, those produced by neutron-capture reactions, have traditionally shown no star-to-star dispersion in all but a handful of metal-poor globular clusters (GCs). Recent…
Chemical Inhomogeneities in the Milky Way Stellar Halo
Ian U. Roederer
We have compiled a sample of 699 stars from the recent literature with detailed chemical abundance information (spanning -4.2 < [Fe/H] < +0.3), and we compute their space velocitie…
The Hobby-Eberly Telescope "Chemical Abundances of Stars in the Halo" (CASH) Project. I. The Lithium-, s-, and r-Enhanced Metal-Poor Giant HKII 17435-00532
Ian U. Roederer, Anna Frebel, Matthew D. Shetrone +7
We present the first detailed abundance analysis of the metal-poor giant HKII 17435-00532. This star was observed as part of the University of Texas long-term project "Chemical Abu…