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The chemical evolution of the Bootes I ultra-faint dwarf galaxy

Frebel, Anna; Norris, John E.; Gilmore, Gerard; Wyse, Rosemary F. G.


We present chemical abundance measurements of two metal-poor red giant stars in the ultra-faint dwarf galaxy Boötes I, based on Magellan/MIKE high-resolution spectra. For Boo-980, with [Fe/H] = -3.1, we present the first elemental abundance measurements, while Boo-127, with [Fe/H] = -2.0, shows abundances in good agreement with previous measurements. Light and iron-peak element abundance ratios in the two Boötes I stars, as well as those of most other Boötes I members, collected from the...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/0004-637X/826/2/110
Access Rights: Open Access


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