Yong, David; Norris, John; Da Costa, Gary; Stanford, Laura; Karakas, Amanda; Shingles, Luke; Hirschi, Raphael; Pignatari, Marco
We present a chemical abundance analysis of a metal-poor star, ROA 276, in the stellar system ω Centauri. We
confirm that this star has an unusually high [Sr/Ba] abundance ratio. Additionally, ROA 276 exhibits remarkably
high abundance ratios, [X/Fe], for all elements from Cu to Mo along with normal abundance ratios for the
elements from Ba to Pb. The chemical abundance pattern of ROA 276, relative to a primordial ω Cen star ROA 46,
is best fit by a fast-rotating low-metallicity massive...[Show more]
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