241 citations · 539 across the 4 of their papers we have counts for
6 papers
An Intermediate Luminosity Transient in NGC300: The Eruption of a Dust-Enshrouded Massive Star
E. Berger, A. M. Soderberg, R. A. Chevalier +10
[abridged] We present multi-epoch high-resolution optical spectroscopy, UV/radio/X-ray imaging, and archival Hubble and Spitzer observations of an intermediate luminosity optical t…
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…