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Carbon and nitrogen abundances of stellar populations in the globular cluster M 2

Lardo, C; Pancino, E; Mucciarelli, Alessio; Milone, Antonino

Description

We present CH and CN index analysis and C and N abundance calculations based on the low-resolution blue spectra of red giant branch (RGB) stars in the Galactic globular cluster NGC 7089 (M2). Our main goal is to investigate the C-N anticorrelation for this intermediate metallicity cluster. The data were collected with DOLORES, the multiobject, low-resolution facility at the Telescopio Nazionale Galileo. We first looked for CH and CN band strength variations and bimodalities in a sample of RGB...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/78358
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201220129

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