Detection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on s-Process Nucleosynthesis at Low Metallicity

Aoki, WakoNorris, JohnRyan, Sean GBeers, Timothy CAnderson, W G2015-12-132015-12-130004-637Xhttp://hdl.handle.net/1885/90357We report the detection of the Pb I λ4057.8 line in the very metal-poor ([Fe/H] = -2.7), carbon-rich star, LP 625-44. We determine the abundance of Pb ([Pb/Fe] = 2.65) and 15 other neutron-capture elements. The abundance pattern between Ba and Pb agreesKeywords: Nuclear reactions; Nucleosynthesis; Stars: Abundances; Stars: AGB and post-AGB; Stars: Carbon; Stars: Population IIDetection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on s-Process Nucleosynthesis at Low Metallicity20002015-12-12