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dc.contributor.author
Fernández Trincado, José G.
dc.contributor.author
Beers, Timothy
dc.contributor.author
Minniti, Dante
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Carigi, Leticia
dc.contributor.author
Placco, Vinivius M.
dc.contributor.author
Chun, Sang Hyun
dc.contributor.author
Lane, Richard R.
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Geisler, Doug
dc.contributor.author
Villanova, Sandro
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Souza, Stefano O.
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Barbuy, Beatriz
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Pérez Villegas, Angeles
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Chiappini, Cristina
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Queiroz, Anna B. A.
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Tang, Baitian
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Alonso García, Javier
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Piatti, Andres Eduardo
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Palma, Tali
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Alves Brito, Alan
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Moni Bidin, Christian
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Roman Lopes, Alexandre
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Muñoz, Richard R.
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Singh, Harinder P.
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Kundu, Richa
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Chaves Velasquez, Leonardo
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Romero Colmenares, María
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Longa Peña, Penelope
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Soto, Mario
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Vieira, Katherine
dc.date.available
2022-08-31T19:21:28Z
dc.date.issued
2021-03
dc.identifier.citation
Fernández Trincado, José G.; Beers, Timothy; Minniti, Dante; Carigi, Leticia; Placco, Vinivius M.; et al.; APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge; EDP Sciences; Astronomy and Astrophysics; 647; 64; 3-2021; 1-17
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/167086
dc.description.abstract
The central ('bulge') region of the Milky Way is teeming with a significant fraction of mildly metal-deficient stars with atmospheres that are strongly enriched in cyanogen (12C14N). Some of these objects, which are also known as nitrogen-enhanced stars, are hypothesised to be relics of the ancient assembly history of the Milky Way. Although the chemical similarity of nitrogen-enhanced stars to the unique chemical patterns observed in globular clusters has been observed, a direct connection between field stars and globular clusters has not yet been proven. In this work, we report on high-resolution, near-infrared spectroscopic observations of the bulge globular cluster NGC 6723, and the serendipitous discovery of a star, 2M18594405-3651518, located outside the cluster (near the tidal radius) but moving on a similar orbit, providing the first clear piece of evidence of a star that was very likely once a cluster member and has recently been ejected. Its nitrogen abundance ratio ([N/Fe] + 0.94) is well above the typical Galactic field-star levels, and it exhibits noticeable enrichment in the heavy s-process elements (Ce, Nd, and Yb), along with moderate carbon enrichment; all characteristics are known examples in globular clusters. This result suggests that some of the nitrogen-enhanced stars in the bulge likely originated from the tidal disruption of globular clusters.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6723
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STARS: ABUNDANCES
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STARS: CHEMICALLY PECULIAR
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TECHNIQUES: SPECTROSCOPIC
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Otras Ciencias Naturales y Exactas
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Otras Ciencias Naturales y Exactas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-08-29T17:36:40Z
dc.journal.volume
647
dc.journal.number
64
dc.journal.pagination
1-17
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Fernández Trincado, José G.. Universidad de Atacama.; Chile. Universite de Franche-Comte; Francia. University of Notre Dame; Estados Unidos
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Fil: Beers, Timothy. University of Notre Dame; Estados Unidos
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Fil: Minniti, Dante. Universidad Andrés Bello; Chile. Vatican Observatory; Ciudad del Vaticano
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Fil: Carigi, Leticia. Universidad Nacional Autónoma de México; México
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Fil: Placco, Vinivius M.. NSF’s National Optical-Infrared Astronomy Research Laboratory; Estados Unidos
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Fil: Chun, Sang Hyun. Korea Astronomy And Space Science Institute; Corea del Sur
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Fil: Lane, Richard R.. Universidad de Atacama.; Chile
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Fil: Geisler, Doug. Universidad de La Serena; Chile. Universidad de Concepción; Chile
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Fil: Villanova, Sandro. Universidad de Concepción; Chile
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Fil: Souza, Stefano O.. Universidade de Sao Paulo; Brasil
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Fil: Barbuy, Beatriz. Universidade de Sao Paulo; Brasil
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Fil: Pérez Villegas, Angeles. Universidad Nacional Autónoma de México; México
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Fil: Chiappini, Cristina. Leibniz-Institut für Astrophysik Potsdam; Alemania. Laboratório Interinstitucional de e-Astronomia; Brasil
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Fil: Queiroz, Anna B. A.. Leibniz-Institut für Astrophysik Potsdam; Alemania
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Fil: Tang, Baitian. Sun Yat-sen University; China
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Fil: Alonso García, Javier. Universidad de Antofagasta; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
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Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
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Fil: Alves Brito, Alan. Universidade Federal do Rio Grande do Sul; Brasil
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Fil: Moni Bidin, Christian. Universidad Católica del Norte; Chile
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Fil: Roman Lopes, Alexandre. Universidad de La Serena; Chile
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Fil: Muñoz, Richard R.. Universidad de Chile; Chile. National Optical Astronomy Observatory. Cerro Tololo Inter-American Observatory; Chile
dc.description.fil
Fil: Singh, Harinder P.. University Of Delhi; India
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Fil: Kundu, Richa. University Of Delhi; India. European Southern Observatory; Chile
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Fil: Chaves Velasquez, Leonardo. Universidad de Nariño; Colombia
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Fil: Romero Colmenares, María. Universidad de Antofagasta; Chile
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Fil: Longa Peña, Penelope. Universidad de Antofagasta; Chile
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Fil: Soto, Mario. Universidad de Atacama; Chile
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Fil: Vieira, Katherine. Universidad de Atacama; Chile
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2021/03/aa40255-20/aa40255-20.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/202040255
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