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  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/24342
Title: Multiple stellar populations in the globular cluster M3 (NGC 5272): a Strömgren perspective
Authors: MASSARI, DAVIDE
Lapenna, Emilio
BRAGAGLIA, Angela 
Dalessandro, Emanuele 
Contreras Ramos, Rodrigo
Amigo, Pía
Issue Date: 2016
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 458
Issue: 4
First Page: 4162
Abstract: We present Strömgren photometry of the Galactic Globular Cluster M3 to study its multiple generations phenomenon. The use of different colour-magnitude diagrams (CMDs) and especially of the notoriously efficient c<SUB>y</SUB> index allowed us to detect a double red giant branch in the cluster CMD. After decontamination from fore- and background sources, the two sequences turned out to be equally populated. The two components also show a bimodal radial distribution well corresponding to that predicted by numerical simulations for clusters living in an intermediate dynamical evolutive state and with a population with modified chemical composition that was born more centrally concentrated than the primordial. The analysis of high-resolution spectra quantitatively demonstrates that the two detected sequences correspond to the first (Na-poor) generation and the second (Na-rich) generation, thus confirming the importance of synergy between photometry and spectroscopy.
URI: http://hdl.handle.net/20.500.12386/24342
URL: https://academic.oup.com/mnras/article/458/4/4162/2613855
ISSN: 0035-8711
DOI: 10.1093/mnras/stw583
Bibcode ADS: 2016MNRAS.458.4162M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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