Sara Bisterzo

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 (2008)

Roederer, Ian U., Frebel, Anna, Shetrone, Matthew D., Prieto, Carlos Allende, Rhee, Jaehyon, Gallino, Roberto, ...

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 Abundances of Stars in...

CS22964-161: A Double-Lined Carbon- and s-Process-Enhanced Metal-Poor Binary Star (2007)

Thompson, Ian B., Ivans, Inese I., Bisterzo, Sara, Sneden, Christopher, Gallino, Roberto, Vauclair, Sylvie, ...

A detailed high-resolution spectroscopic analysis is presented for the carbon-rich low metallicity Galactic halo object CS 22964-161. We have discovered that CS 22964-161 is a double-lined...

Carbon-Enhanced Metal-Poor Stars. Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS31062-050 and LP625-44 (2006)

Aoki, Wako, Bisterzo, Sara, Gallino, Roberto, Beers, Timothy C., Norris, John E., Ryan, Sean G., ...

We have investigated the abundances of heavy neutron-capture elements, including osmium (Os) and iridium (Ir), in the two Carbon-Enhanced Metal-Poor (CEMP) subgiants CS31062-050 and LP625-44....

Near-UV Observations of HD221170: New Insights into the Nature of r-Process-Rich Stars (2006)

Ivans, Inese I., Simmerer, Jennifer, Sneden, Christopher, Lawler, James E., Cowan, John J., Gallino, Roberto, ...

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 performed a...