241 citations · 539 across the 4 of their papers we have counts for
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Fe and Al Abundances for 180 Red Giants in the Globular Cluster Omega Centauri (NGC 5139)
Christian I. Johnson, Catherine A. Pilachowski, Jennifer Simmerer +1
We present radial velocities, Fe, and Al abundances for 180 red giant branch (RGB) stars in the Galactic globular cluster Omega Centauri ( Cen). The majority of our data lie in…
Manganese Abundances in Cluster and Field Stars
J. S. Sobeck, I. I. Ivans, J. A. Simmerer +4
We have derived Mn abundances for more than 200 stars in 19 globular clusters. In addition, Mn abundance determinations have been made for a comparable number of halo field and dis…
Near-UV Observations of HD221170: New Insights into the Nature of r-Process-Rich Stars
Inese I. Ivans, Jennifer Simmerer, Christopher Sneden +4
Employing high resolution spectra obtained with the near-UV sensitive detector on the Keck I HIRES, supplemented by data obtained with the McDonald Observatory 2-d coude, we have p…
The Rise of the s-Process in the Galaxy
J. Simmerer, C. Sneden, J. J. Cowan +3
From newly-obtained high-resolution, high signal-to-noise ratio spectra the abundances of the elements La and Eu have been determined over the stellar metallicity range -3<[Fe/H]<+…
A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars
Jennifer Simmerer, Christopher Sneden, Inese I. Ivans +3
We derive [Cu/Fe] for 117 giant stars in ten globular clusters (M3, M4, M5, M10, M13, M15, M71, NGC 7006, NCG 288, and NGC 362) and find that globular cluster Cu abundances appear…