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AGB subpopulations in the nearby globular cluster NGC6397

MacLean, B. T.; Campbell, S; De Silva, Gayandhi; Lattanzio, John; D'Orazi, V; Cottrell, P L; Momany, Y; Casagrande, Luca


It has been well established that Galactic Globular clusters (GCs) harbour more than one stellar population, distinguishable by the anticorrelations of light-element abundances (C-N, Na-O, and Mg-Al). These studies have been extended recently to the asymptotic giant branch (AGB). Here, we investigate the AGB of NGC6397 for the first time. We have performed an abundance analysis of high-resolution spectra of 47 red giant branch (RGB) and eight AGB stars, deriving Fe, Na, O, Mg, and Al...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stx3217
Access Rights: Open Access


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