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Chemical Analysis of Five Red Giants in the Globular Cluster M10 (NGC 6254)
Sharina Haynes, Geoffrey Burks, Christian I. Johnson +1
We have determined Al, , Fe-peak, and neutron capture elemental abundances for five red giant branch (RGB) stars in the Galactic globular cluster M10. Abundances were determined…
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…
Europium, Samarium, and Neodymium Isotopic Fractions in Metal-Poor Stars
Ian U. Roederer, James E. Lawler, Christopher Sneden +3
We have derived isotopic fractions of europium, samarium, and neodymium in two metal-poor giants with differing neutron-capture nucleosynthetic histories. These isotopic fractions…
Hydra Observations of Aluminum Abundances in the Red Giants of the Globular Clusters M80 and NGC 6752
Robert M. Cavallo, Nicholas B. Suntzeff, Catherine A. Pilachowski
Aluminum and other metal abundances were determined in 21 red giants in the globular clusters NGC 6752 and M80 as part of a larger study to determine whether the aluminum distribut…
Probing the Neutron-Capture Nucleosynthesis History of Galactic Matter
J. W. Truran, J. J. Cowan, C. A. Pilachowski +1
The heavy elements formed by neutron capture processes have an interesting history from which we can extract useful clues to and constraints upon both the characteristics of the pr…
Chemical Abundances in Twelve Red Giants of the Large Magellanic Cloud from High-Resolution Infrared Spectroscopy
V. V. Smith, K. H. Hinkle, K. Cunha +10
High-resolution infrared spectra (R=50,000) have been obtained for twelve red-giant members of the LMC with the Gemini South 8.3-meter telescope plus Phoenix spectrometer. Quantita…