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Tidal Tails around the Outer Halo Globular Clusters Eridanus and Palomar 15

Myeong, G. C.; Jerjen, Helmut; Mackey, Dougal; Da Costa, Gary


We report the discovery of tidal tails around the two outer halo globular clusters, Eridanus and Palomar 15, based on gi-band images obtained with DECam at the CTIO 4 m Blanco Telescope. The tidal tails are among the most remote stellar streams currently known in the Milky Way halo. Cluster members have been determined from the color-magnitude diagrams and used to establish the radial density profiles, which show, in both cases, a strong departure in the outer regions from the best-fit King...[Show more]

CollectionsANU Research Publications
Date published: 2017-05-11
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.3847/2041-8213/aa6fb4
Access Rights: Open Access


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