Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29821
Title: | APOGEE chemical abundances of globular cluster giants in the inner Galaxy | Authors: | Schiavon, Ricardo P. Johnson, Jennifer A. Frinchaboy, Peter M. Zasowski, Gail Mészáros, Szabolcs García-Hernández, D. A. Cohen, Roger E. Tang, Baitian Villanova, Sandro Geisler, Douglas Beers, Timothy C. Fernández-Trincado, J. G. García Pérez, Ana E. LUCATELLO, Sara Majewski, Steven R. Martell, Sarah L. O'Connell, Robert W. Allende Prieto, Carlos Bizyaev, Dmitry CARRERA, JIMENEZ RICARDO JESUS Lane, Richard R. Malanushenko, Elena Malanushenko, Viktor Muñoz, Ricardo R. Nitschelm, Christian Oravetz, Daniel Pan, Kaike Roman-Lopes, Alexandre Schultheis, Matthias Simmons, Audrey |
Issue Date: | 2017 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 466 | Issue: | 1 | First Page: | 1010 | Abstract: | We report chemical abundances obtained by Sloan Digital Sky Survey (SDSS)-III/Apache Point Observatory Galactic Evolution Experiment for giant stars in five globular clusters located within 2.2 kpc of the Galactic Centre. We detect the presence of multiple stellar populations in four of those clusters (NGC 6553, NGC 6528, Terzan 5 and Palomar 6) and find strong evidence for their presence in NGC 6522. All clusters with a large enough sample present a significant spread in the abundances of N, C, Na and Al, with the usual correlations and anticorrelations between various abundances seen in other globular clusters. Our results provide important quantitative constraints on theoretical models for self-enrichment of globular clusters, by testing their predictions for the dependence of yields of elements such as Na, N, C and Al on metallicity. They also confirm that, under the assumption that field N-rich stars originate from globular cluster destruction, they can be used as tracers of their parental systems in the high-metallicity regime. | URI: | http://hdl.handle.net/20.500.12386/29821 | URL: | https://academic.oup.com/mnras/article/466/1/1010/2617721 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stw3093 | Bibcode ADS: | 2017MNRAS.466.1010S | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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