Carbon-Enhanced Metal-Poor Stars: Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS 31062-050 and LP 625-44

Aoki, WakoBisterzo, SaraGallino, RobertoBeers, Timothy CNorris, JohnRyan, Sean GTsangarides, Stelios2015-12-070004-637Xhttp://hdl.handle.net/1885/26978We have investigated the abundances of heavy neutron-capture elements, including osmium (Os) and iridium (Ir), in the two carbon-enhanced metal-poor (CEMP) subgiants CS 31062-050 and LP 625-44. CS 31062-050 is known to be a so-called CEMP-r/s star, whichKeywords: Nuclear reactions, nucleosynthesis, abundances; Stars: abundances; Stars: AGB and post-AGB; Stars: individual (CA 31062-050, LP 625-44); Stars: population IICarbon-Enhanced Metal-Poor Stars: Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS 31062-050 and LP 625-44200610.1086/5088782015-12-07