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Multiple stellar populations in the Galactic globular cluster NGC 6752

Milone, Antonino; Piotto, G; King, I R; Bedin, L R; Anderson, Jay; Marino, Anna; Momany, Y; Malavolta, L; Villanova, S


We have carried out high-precision photometry on a large number of archival Hubble Space Telescope images of the Galactic globular cluster NGC 6752, to search for signs of multiple stellar populations. We find a broadened main sequence (MS) and demonstrate that this broadening cannot be attributed either to binaries or to photometric errors. There is also some indication of an MS split. No significant spread could be found along the sub-giant branch, however. Ground-based photometry reveals...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/709/2/1183


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