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The chemical signature of a relic star cluster in the sextans dwarf spheroidal galaxy - Implications for near-field cosmology

Karlsson, Torgny; Bland-Hawthorn, Joss; Freeman, Kenneth; Silk, Joe

Description

We present tentative evidence for the existence of a dissolved star cluster at [Fe/H] = -2.7 in the Sextans dwarf spheroidal galaxy. We use the technique of chemical tagging to identify stars that are highly clustered in a multi-dimensional chemical abundance space (-space). In a sample of six stars, three, possibly four, stars are identified as potential cluster stars. The initial stellar mass of the parent cluster is estimated from two independent observations to be , assuming a Salpeter...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/68635
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/759/2/111

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