Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE

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dc.contributor.authorTang, Baitian
dc.contributor.authorCohen, Roger E.
dc.contributor.authorGeisler, Doug
dc.contributor.authorSchiavon, Ricardo P.
dc.contributor.authorMajewski, Steven R.
dc.contributor.authorVillanova, Sandro
dc.contributor.authorCarrera, Ricardo
dc.contributor.authorZamora, Olga
dc.contributor.authorGarcia Hernandez, D. A.
dc.contributor.authorShetrone, Matthew
dc.contributor.authorFrinchaboy, Peter
dc.contributor.authorMeza, Andres
dc.contributor.authorFernandez Trincado, J. G.
dc.contributor.authorMunoz, Ricardo R.
dc.contributor.authorLin, Chien Cheng
dc.contributor.authorLane, Richard R.
dc.contributor.authorNitschelm, Christian
dc.contributor.authorPan, Kaike
dc.contributor.authorBizyaev, Dmitry
dc.contributor.authorOravetz, Daniel
dc.contributor.authorSimmons, Audrey
dc.date.accessioned2024-01-10T13:09:51Z
dc.date.available2024-01-10T13:09:51Z
dc.date.issued2017
dc.description.abstractMultiple populations revealed in globular clusters (GCs) are important windows to the formation and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are an indispensable part of this picture, but the high optical extinction in this region has prevented extensive research. In this work, we use the high-resolution near-infrared (NIR) spectroscopic data from Apache Point Observatory Galactic Evolution Experiment (APOGEE) to study the chemical abundances of NGC 6553, which is one of the most metal-rich bulge GCs. We identify 10 red giants as cluster members using their positions, radial velocities, iron abundances, and NIR photometry. Our sample stars show a mean radial velocity of -0.14 +/- 5.47 km s(-1), land a mean [Fe/H] of -0.15 +/- 0.05. We clearly separate two populations of stars in C and N in this GC for the first time. NGC 6553 is the most metal-rich GC where the multiple stellar population phenomenon is found until now. Substantial chemical variations are also found in Na, O, and Al. However, the two populations show similar Si, Ca, and iron-peak element abundances. Therefore, we infer that the CNO, NeNa, and MgAl cycles have been activated, but the MgAl cycle is too weak to show its effect on Mg. Type Ia and Type II supernovae do not seem to have significantly polluted the second generation stars. Comparing with other GC studies, NGC 6553 shows similar chemical variations as other relatively metal-rich GCs. We also confront current GC formation theories with our results, and suggest possible avenues for improvement in the models.
dc.description.funderChilean BASAL Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA)
dc.description.funderGemini-CONICYT Project
dc.description.funderRamon y Cajal fellowship
dc.description.funderSpanish Ministry of Economy and Competitiveness (MINECO)
dc.description.funderProyecto Interno
dc.description.funderCentre National d'Etudes Spatiales (CNES)
dc.description.funderRegion de Franche-Comte
dc.description.funderFrench Programme National de Cosmologie et Galaxies (PNCG)
dc.description.funderAlfred P. Sloan Foundation
dc.description.funderUS Department of Energy Office of Science
dc.description.funderCenter for High-Performance Computing at the University of Utah
dc.description.funderScience and Technology Facilities Council
dc.fechaingreso.objetodigital2024-04-29
dc.format.extent13 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stw2739
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stw2739
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77688
dc.identifier.wosidWOS:000393782000002
dc.information.autorucFísica;Lane R;S/I;1021384
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final31
dc.pagina.inicio19
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsacceso restringido
dc.subjectstars: abundances
dc.subjectstars: evolution
dc.subjectGalaxy: bulge
dc.subjectglobular clusters: individual: NGC 6553
dc.subjectHUBBLE-SPACE-TELESCOPE
dc.subjectMULTIPLE STELLAR POPULATIONS
dc.subjectMILKY-WAY BULGE
dc.subjectUV LEGACY SURVEY
dc.subjectHORIZONTAL-BRANCH STARS
dc.subjectFLAMES-GIRAFFE SPECTRA
dc.subjectSDSS-III/APOGEE SURVEY
dc.subjectGALACTIC BULGE
dc.subjectELEMENT ABUNDANCES
dc.subjectOMEGA-CENTAURI
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleTwo groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE
dc.typeartículo
dc.volumen465
sipa.codpersvinculados1021384
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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