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Detailed chemical abundances of four stars in the unusual globular cluster Palomar 1

Sakari, C M; Venn, Kim; Irwin, M. J.; Aoki, Wako; Arimoto, N; Dotter, Aaron

Description

Detailed chemical abundances for 21 elements are presented for four red giants in the anomalous outer halo globular cluster Palomar 1 (RGC = 17.2 kpc, Z = 3.6 kpc) using high-resolution (R = 36, 000) spectra from the High Dispersion Spectrograph on the Subaru Telescope. Pal1 has long been considered unusual because of its low surface brightness, sparse red giant branch, young age, and its possible association with two extragalactic streams of stars. This paper shows that its chemistry further...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/78882
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/740/2/106

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