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Multiple stellar populations in three rich large magellanic cloud star clusters

Mackey, Alasdair; Broby Nielsen, P; Ferguson, A. M. N.; Richardson, J C

Description

We present deep color-magnitude diagrams for three rich intermediate-age star clusters in the LMC, constructed from archival ACS F435W and F814W imaging. All three clusters exhibit clear evidence for peculiar main-sequence turnoffs. NGC 1846 and 1806 each possess two distinct turnoff branches, while the turnoff for NGC 1783 shows a much larger spread in color than can be explained by the photometric uncertainties. We demonstrate that although all three clusters contain significant populations...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/61790
Source: Astrophysical Journal Letters
DOI: 10.1086/590343

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