APOGEE-2S Discovery of Light- And Heavy-element Abundance Correlations in the Bulge Globular Cluster NGC 6380

Vista sencilla de ítem
dc.contributor.authorFernández-Trincado, José G.
dc.contributor.authorBeers, Timothy C.
dc.contributor.authorBarbuy, Beatriz
dc.contributor.authorMészáros, Szabolcs
dc.contributor.authorMinniti, Dante
dc.contributor.authorSmith, Verne V.
dc.contributor.authorCunha, Katia
dc.contributor.authorVillanova, Sandro
dc.contributor.authorGeisler, Doug
dc.contributor.authorMajewski, Steven R.
dc.contributor.authorCarigi, Leticia
dc.contributor.authorTang, Baitian
dc.contributor.authorMoni Bidin, Christian
dc.contributor.authorVieira, Katherine
dc.date.accessioned2025-05-28T21:47:23Z
dc.date.available2025-05-28T21:47:23Z
dc.date.issued2021-09-01
dc.descriptionIndexación: Scopus.
dc.description.abstractWe derive abundance ratios for nine stars in the relatively high-metallicity bulge globular cluster NGC 6380. We find a mean cluster metallicity between [Fe/H] = -0.80 and -0.73, with no clear evidence for a variation in iron abundances beyond the observational errors. Stars with strongly enhanced [N/Fe] abundance ratios populate the cluster and are anticorrelated with [C/Fe], trends that are considered a signal of the multiple-population phenomenon in this cluster. We detect an apparent intrinsic star-to-star spread (⪆0.27 dex) in the slow neutron-capture process element (s-element) Ce ii. Moreover, the [Ce/Fe] abundance ratio exhibits a likely correlation with [N/Fe], and a somewhat weaker correlation with [Al/Fe]. If confirmed, NGC 6380 could be the first high-metallicity globular cluster where a N-Ce correlation is detected. Furthermore, this correlation suggests that Ce may also be an element involved in the multiple-population phenomenon. Currently, a consensus interpretation for the origin of the this apparent N-Ce correlation in high-metallicity clusters is lacking. We tentatively suggest that it could be reproduced by different channels - low-mass asymptotic giant branch stars in the high-metallicity regime or fast-rotating massive stars ("spinstars"), due to the rotational mixing. It may also be the cumulative effect of several pollution events including the occurrence of peculiar stars. Our findings should guide stellar nucleosynthesis models, in order to understand the reasons for its apparent exclusivity in relatively high-metallicity globular clusters. © 2021. The Author(s). Published by the American Astronomical Society.
dc.description.accesoabiertoSI
dc.description.agradT.C.B. acknowledges partial support for this work from grant PHY 14-30152: Physics Frontier Center/JINA Center for the Evolution of the Elements (JINA-CEE), awarded by the US National Science Foundation. B.B. acknowledges grants from FAPESP, CNPq, and CAPES—Financial code 001. D.G. acknowledges financial support from the Dirección de Investigación y Desarrollo de la Universidad de La Serena through the Programa de Incentivo a la Investigación de Académicos (PIA-DIDULS). D.G. and D.M. gratefully acknowledge support from the Chilean Centro de Excelencia en Astrofísica y Tecnologías Afines (CATA) BASAL grant AFB-170002. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS website is www.sdss.org. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
dc.description.urihttps://iopscience-iop-org.recursosbiblioteca.unab.cl/article/10.3847/2041-8213/ac1c7e
dc.identifier.citationAstrophysical Journal Letters, Volume 918, Issue 1, 1 September 2021, Article number L9
dc.identifier.doi10.3847/2041-8213/ac1c7e
dc.identifier.folioPHY 14-30152: Physics Frontier Center/JINA Center for the Evolution of the Elements (JINA-CEE)
dc.identifier.folioFAPESP, CNPq, and CAPES—Financial code 001
dc.identifier.folioDirección de Investigación y Desarrollo de la Universidad de La Serena through the Programa de Incentivo a la Investigación de Académicos (PIA-DIDULS)
dc.identifier.folioChilean Centro de Excelencia en Astrofísica y Tecnologías Afines (CATA) BASAL grant AFB-170002.
dc.identifier.generoH
dc.identifier.issn2041-8205
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/64990
dc.language.isoen
dc.other.orcidhttps://orcid.org/0000-0001-8237-5209
dc.other.orcidhttps://orcid.org/0000-0002-7064-099X
dc.other.orcidhttps://orcid.org/0000-0002-0134-2024
dc.other.orcidhttps://orcid.org/0000-0001-5598-8720
dc.publisherAmerican Astronomical Society
dc.rights.licenseAttribution 4.0 International CC BY 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectGlobular Cluster
dc.subjectStars: Abundances
dc.subjectPhotometry
dc.titleAPOGEE-2S Discovery of Light- And Heavy-element Abundance Correlations in the Bulge Globular Cluster NGC 6380
dc.typeArtículo
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Fernández_Apogee-2S_Discovery_of_Light.pdf
Tamaño:
2.93 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLÉS
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista