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A hero's little horse: discovery of a dissolving star cluster in Pegasus

Kim, Dongwon; Jerjen, Helmut


We report the discovery of an ultra-faint stellar system in the constellation of Pegasus. This concentration of stars was detected by applying our overdensity detection algorithm to the Sloan Digital Sky Survey Data Release 10 and confirmed with deeper photometry from the Dark Energy Camera (DECam) at the 4 m Blanco telescope. The best-fitting model isochrone indicates that this stellar system, Kim 1, features an old (12 Gyr) and metal-poor ([Fe/H] ∼ −1.7) stellar population at a...[Show more]

CollectionsANU Research Publications
Date published: 2015-01-15
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.1088/0004-637X/799/1/73


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