5 citations · 7 across the 5 of their papers we have counts for
14 papers
Neutron-Capture Element Abundances in Halo Stars
John J. Cowan, Christopher Sneden
We present new abundance observations of neutron-capture elements in Galactic stars. These include new Hubble Space Telescope (HST) detections of the elements Ge, Zr and Pt in a gr…
Halo Star Abundances and Heavy Element Nucleosynthesis
John J. Cowan, Christopher Sneden
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 studie…
Advances in r-Process Nucleosynthesis
John J. Cowan, Christopher Sneden
During the last several decades, there have been a number of advances in understanding the rapid neutron-capture process (i.e., the r-process). These advances include large quantit…
A New Population of Old Stars
I. I. Ivans, C. Sneden, C. R. James +5
We report the results of a coherent study of three chemically anomalous metal-poor ([Fe/H] ~ -2) stars. These objects exhibit unusually low abundances of Mg, Si, Ca (alpha-elements…
Automated Stellar Spectral Classification and Parameterization for the Masses
Ted von Hippel, Carlos Allende Prieto, Chris Sneden
Stellar spectroscopic classification has been successfully automated by a number of groups. Automated classification and parameterization work best when applied to a homogeneous da…
The r-Process and Chronometers
John J. Cowan, Christopher Sneden, James W. Truran
We present detailed abundance observations of the metal-poor ([Fe/H] = --2.0) Galactic halo star BD+17 3248. We have detected gold in this star, for the first time in any halo star…