METAL-POOR STARS OBSERVED WITH THE MAGELLAN TELESCOPE. I. CONSTRAINTS ON PROGENITOR MASS AND METALLICITY OF AGB STARS UNDERGOING s-PROCESS NUCLEOSYNTHESIS
We present a comprehensive abundance analysis of two newly discovered carbon-enhanced metal-poor (CEMP) stars. HE 2138?3336 is a s-process-rich star with [Fe/H] = -2.79, and has the highest [Pb/Fe] abundance ratio measured thus far, if non-local thermodynamic equilibrium corrections are included ([P...
Main Authors: | Placco, Vinicius M. (Author), Beers, Timothy C. (Author), Karakas, Amanda I. (Author), Kennedy, Catherine R. (Author), Rossi, Silvia (Author), Christlieb, N. (Author), Stancliffe, Richard J. (Author), Frebel, Anna L. (Contributor) |
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Other Authors: | Massachusetts Institute of Technology. Department of Physics (Contributor), MIT Kavli Institute for Astrophysics and Space Research (Contributor) |
Format: | Article |
Language: | English |
Published: |
IOP Publishing,
2014-07-18T13:55:12Z.
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Subjects: | |
Online Access: | Get fulltext |
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