Metal-poor stars observed with the Magellan telescope. I. Constraints on progenitor mass and metallicity of AGB stars undergoing s-process nucleosynthesis
Date
2013
Authors
Placco, Vinicius M.
Frebel, Anna
Beers, Timothy C
Karakas, Amanda
Kennedy, Catherine
Rossi, Silvia
Christlieb, Norbert
Stancliffe, R J
Journal Title
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Volume Title
Publisher
IOP Publishing
Abstract
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 thermodyn
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Keywords
Keywords: Galaxy: halo; stars: abundances; stars: atmospheres; stars: Population II; techniques: spectroscopic
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Source
Astrophysical Journal, The
Type
Journal article
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Restricted until
2037-12-31
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