Homogeneous analysis of globular clusters from the APOGEE survey with the BACCHUS code – II. The Southern clusters and overview
Author
Mészáros, SzabolcsMasseron, Thomas
García-Hernández, D A
Allende Prieto, Carlos
Beers, Timothy C
Bizyaev, Dmitry

Chojnowski, Drew
Cohen, Roger E
Cunha, Katia
Dell’Agli, Flavia
Ebelke, Garrett
Fernández-Trincado, José G
Frinchaboy, Peter
Geisler, Doug
Hasselquist, Sten
Hearty, Fred
Holtzman, Jon
Johnson, Jennifer
Lane, Richard R
Lacerna, Ivan

Longa-Peña, Penelopé
Majewski, Steven R
Martell, Sarah L
Minniti, Dante
Nataf, David
Nidever, David L
Pan, Kaike

Schiavon, Ricardo P
Shetrone, Matthew
Smith, Verne V
Sobeck, Jennifer S
Stringfellow, Guy S
Szigeti, László
Tang, Baitian
Wilson, John C
Zamora, Olga
Affiliation
Univ Arizona, Steward ObservIssue Date
2019-12-16Keywords
astronomical data bases: miscellaneoussurveys
stars galaxies: abundances
stars:late-type
globular clusters: general
galaxies: fundamental parameters
Metadata
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OXFORD UNIV PRESSCitation
Szabolcs Mészáros, Thomas Masseron, D A García-Hernández, Carlos Allende Prieto, Timothy C Beers, Dmitry Bizyaev, Drew Chojnowski, Roger E Cohen, Katia Cunha, Flavia Dell’Agli, Garrett Ebelke, José G Fernández-Trincado, Peter Frinchaboy, Doug Geisler, Sten Hasselquist, Fred Hearty, Jon Holtzman, Jennifer Johnson, Richard R Lane, Ivan Lacerna, Penelopé Longa-Peña, Steven R Majewski, Sarah L Martell, Dante Minniti, David Nataf, David L Nidever, Kaike Pan, Ricardo P Schiavon, Matthew Shetrone, Verne V Smith, Jennifer S Sobeck, Guy S Stringfellow, László Szigeti, Baitian Tang, John C Wilson, Olga Zamora, Homogeneous analysis of globular clusters from the APOGEE survey with the BACCHUS code – II. The Southern clusters and overview, Monthly Notices of the Royal Astronomical Society, Volume 492, Issue 2, February 2020, Pages 1641–1670, https://doi.org/10.1093/mnras/stz3496Rights
Copyright © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We investigate the Fe, C, N, O, Mg, Al, Si, K, Ca, Ce, and Nd abundances of 2283 red giant stars in 31 globular clusters from high-resolution spectra observed in both the Northern and Southern hemisphere by the SDSS-IV APOGEE-2 survey. This unprecedented homogeneous data set, largest to date, allows us to discuss the intrinsic Fe spread, the shape, and statistics of Al-Mg and N-C anti-correlations as a function of cluster mass, luminosity, age, and metallicity for all 31 clusters. We find that the Fe spread does not depend on these parameters within our uncertainties including cluster metallicity, contradicting earlier observations. We do not confirm the metallicity variations previously observed in M22 and NGC 1851. Some clusters show a bimodal Al distribution, while others exhibit a continuous distribution as has been previously reported in the literature. We confirm more than two populations in omega Cen and NGC 6752, and find new ones in M79. We discuss the scatter of Al by implementing a correction to the standard chemical evolution of Al in the Milky Way. After correction, its dependence on cluster mass is increased suggesting that the extent of Al enrichment as a function of mass was suppressed before the correction. We observe a turnover in the Mg-Al anticorrelation at very low Mg in omega Cen, similar to the pattern previously reported in M15 and M92. omega Cen may also have a weak K-Mg anticorrelation, and if confirmed, it would be only the third cluster known to show such a pattern.ISSN
0035-8711Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1093/mnras/stz3496