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Fluorine variations in the globular cluster NGC 6656 (m22): Implications for internal enrichment timescales

D’Orazi , V; Lucatello, Sara; Lugaro, Maria; Gratton, Raffaele G.; Angelou, G C; Bragaglia, Angela; Carretta, Eugenio; Alves-Brito, Alan; Ivans, Inese; Masseron, Thomas; Mucciarelli, Alessio


Observed chemical (anti)correlations in proton-capture elements among globular cluster stars are presently recognized as the signature of self-enrichment from now extinct, previous generations of stars. This defines the multiple population scenario. Since fluorine is also affected by proton captures, determining its abundance in globular clusters provides new and complementary clues regarding the nature of these previous generations and supplies strong observational constraints to the chemical...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/763/1/22


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