The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters
- Autores
- Saroon, S.; Dias, B.; Tsujimoto, T.; Parisi, Maria Celeste; Maia, F.; Kerber, L.; Bekki, K.; Minniti, D.; Oliveira, R. A. P.; Westera, P.; Katime Santrich, O. J.; Bica, E.; Sanmartim, D.; Correa Quint, B.; Fraga, L.
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts triggered by the multiple interactions between the SMC and the Large Magellanic Cloud, a significant (∼0.5 dex) metallicity dispersion for the SMC cluster population younger than about 7.5 Gyr, and multiple chemical evolution models tracing very different paths through the observed age–metallicity relation of the SMC. There is no doubt that these processes were complex. Therefore, a step-by-step strategy is required in order to better understand the SMC chemical evolution. We adopted an existing framework to split the SMC intoregions on the sky, and we focus on the west halo in this work, which contains the oldest and most metal-poor stellar populations and is moving away from the SMC, that is, in an opposite motion with respect to the Magellanic Bridge. We present a sample containing ∼60% of all west halo clusters to represent the region well, and we identify a clear age–metallicity relation with a tight dispersionthat exhibits a 0.5 dex metallicity dip about 6 Gyr ago. We ran chemical evolution models and discuss possible scenarios to explain this metallicity dip, the most likely being a major merger accelerating the SFR after the event. This merger should be combined with inefficient internal gas mixing within the SMC and different SFRs in different SMC regions because the same metallicity dip is not seen in the AMR of the SMC combining clusters from all regions. We try to explain the scenario to better understand the SMC chemo-dynamical history.
Fil: Saroon, S.. Universidad Andrés Bello; Chile
Fil: Dias, B.. Universidad de Tarapacá; Chile
Fil: Tsujimoto, T.. National Astronomical Observatory Of Japan; Japón
Fil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Maia, F.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Kerber, L.. Universidade Estadual de Santa Cruz; Brasil
Fil: Bekki, K.. University of Western Australia; Australia
Fil: Minniti, D.. Universidad Andrés Bello; Chile
Fil: Oliveira, R. A. P.. Universidade de Sao Paulo; Brasil
Fil: Westera, P.. Universidad Federal Do Abc; Brasil
Fil: Katime Santrich, O. J.. Universidade Estadual de Santa Cruz; Brasil
Fil: Bica, E.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Sanmartim, D.. Rubin Observatory Project Office; Estados Unidos
Fil: Correa Quint, B.. Rubin Observatory Project Office; Estados Unidos
Fil: Fraga, L.. Laboratório Nacional de Astrofísica; Brasil - Materia
-
GALAXIES: DWARF
GALACIES: INTERACTIONS
MAGELLANIC CLOUDS
GALAXIES: CLUSTERS: GENERAL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/231603
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The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clustersSaroon, S.Dias, B.Tsujimoto, T.Parisi, Maria CelesteMaia, F.Kerber, L.Bekki, K.Minniti, D.Oliveira, R. A. P.Westera, P.Katime Santrich, O. J.Bica, E.Sanmartim, D.Correa Quint, B.Fraga, L.GALAXIES: DWARFGALACIES: INTERACTIONSMAGELLANIC CLOUDSGALAXIES: CLUSTERS: GENERALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts triggered by the multiple interactions between the SMC and the Large Magellanic Cloud, a significant (∼0.5 dex) metallicity dispersion for the SMC cluster population younger than about 7.5 Gyr, and multiple chemical evolution models tracing very different paths through the observed age–metallicity relation of the SMC. There is no doubt that these processes were complex. Therefore, a step-by-step strategy is required in order to better understand the SMC chemical evolution. We adopted an existing framework to split the SMC intoregions on the sky, and we focus on the west halo in this work, which contains the oldest and most metal-poor stellar populations and is moving away from the SMC, that is, in an opposite motion with respect to the Magellanic Bridge. We present a sample containing ∼60% of all west halo clusters to represent the region well, and we identify a clear age–metallicity relation with a tight dispersionthat exhibits a 0.5 dex metallicity dip about 6 Gyr ago. We ran chemical evolution models and discuss possible scenarios to explain this metallicity dip, the most likely being a major merger accelerating the SFR after the event. This merger should be combined with inefficient internal gas mixing within the SMC and different SFRs in different SMC regions because the same metallicity dip is not seen in the AMR of the SMC combining clusters from all regions. We try to explain the scenario to better understand the SMC chemo-dynamical history.Fil: Saroon, S.. Universidad Andrés Bello; ChileFil: Dias, B.. Universidad de Tarapacá; ChileFil: Tsujimoto, T.. National Astronomical Observatory Of Japan; JapónFil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Maia, F.. Universidade Federal do Rio de Janeiro; BrasilFil: Kerber, L.. Universidade Estadual de Santa Cruz; BrasilFil: Bekki, K.. University of Western Australia; AustraliaFil: Minniti, D.. Universidad Andrés Bello; ChileFil: Oliveira, R. A. P.. Universidade de Sao Paulo; BrasilFil: Westera, P.. Universidad Federal Do Abc; BrasilFil: Katime Santrich, O. J.. Universidade Estadual de Santa Cruz; BrasilFil: Bica, E.. Universidade Federal do Rio Grande do Sul; BrasilFil: Sanmartim, D.. Rubin Observatory Project Office; Estados UnidosFil: Correa Quint, B.. Rubin Observatory Project Office; Estados UnidosFil: Fraga, L.. Laboratório Nacional de Astrofísica; BrasilEDP Sciences2023-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/231603Saroon, S.; Dias, B.; Tsujimoto, T.; Parisi, Maria Celeste; Maia, F.; et al.; The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters; EDP Sciences; Astronomy and Astrophysics; 677; 9-20231432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2023/09/aa46648-23/aa46648-23.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202346648info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:14Zoai:ri.conicet.gov.ar:11336/231603instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:14.613CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
title |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
spellingShingle |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters Saroon, S. GALAXIES: DWARF GALACIES: INTERACTIONS MAGELLANIC CLOUDS GALAXIES: CLUSTERS: GENERAL |
title_short |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
title_full |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
title_fullStr |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
title_full_unstemmed |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
title_sort |
The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters |
dc.creator.none.fl_str_mv |
Saroon, S. Dias, B. Tsujimoto, T. Parisi, Maria Celeste Maia, F. Kerber, L. Bekki, K. Minniti, D. Oliveira, R. A. P. Westera, P. Katime Santrich, O. J. Bica, E. Sanmartim, D. Correa Quint, B. Fraga, L. |
author |
Saroon, S. |
author_facet |
Saroon, S. Dias, B. Tsujimoto, T. Parisi, Maria Celeste Maia, F. Kerber, L. Bekki, K. Minniti, D. Oliveira, R. A. P. Westera, P. Katime Santrich, O. J. Bica, E. Sanmartim, D. Correa Quint, B. Fraga, L. |
author_role |
author |
author2 |
Dias, B. Tsujimoto, T. Parisi, Maria Celeste Maia, F. Kerber, L. Bekki, K. Minniti, D. Oliveira, R. A. P. Westera, P. Katime Santrich, O. J. Bica, E. Sanmartim, D. Correa Quint, B. Fraga, L. |
author2_role |
author author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
GALAXIES: DWARF GALACIES: INTERACTIONS MAGELLANIC CLOUDS GALAXIES: CLUSTERS: GENERAL |
topic |
GALAXIES: DWARF GALACIES: INTERACTIONS MAGELLANIC CLOUDS GALAXIES: CLUSTERS: GENERAL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts triggered by the multiple interactions between the SMC and the Large Magellanic Cloud, a significant (∼0.5 dex) metallicity dispersion for the SMC cluster population younger than about 7.5 Gyr, and multiple chemical evolution models tracing very different paths through the observed age–metallicity relation of the SMC. There is no doubt that these processes were complex. Therefore, a step-by-step strategy is required in order to better understand the SMC chemical evolution. We adopted an existing framework to split the SMC intoregions on the sky, and we focus on the west halo in this work, which contains the oldest and most metal-poor stellar populations and is moving away from the SMC, that is, in an opposite motion with respect to the Magellanic Bridge. We present a sample containing ∼60% of all west halo clusters to represent the region well, and we identify a clear age–metallicity relation with a tight dispersionthat exhibits a 0.5 dex metallicity dip about 6 Gyr ago. We ran chemical evolution models and discuss possible scenarios to explain this metallicity dip, the most likely being a major merger accelerating the SFR after the event. This merger should be combined with inefficient internal gas mixing within the SMC and different SFRs in different SMC regions because the same metallicity dip is not seen in the AMR of the SMC combining clusters from all regions. We try to explain the scenario to better understand the SMC chemo-dynamical history. Fil: Saroon, S.. Universidad Andrés Bello; Chile Fil: Dias, B.. Universidad de Tarapacá; Chile Fil: Tsujimoto, T.. National Astronomical Observatory Of Japan; Japón Fil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina Fil: Maia, F.. Universidade Federal do Rio de Janeiro; Brasil Fil: Kerber, L.. Universidade Estadual de Santa Cruz; Brasil Fil: Bekki, K.. University of Western Australia; Australia Fil: Minniti, D.. Universidad Andrés Bello; Chile Fil: Oliveira, R. A. P.. Universidade de Sao Paulo; Brasil Fil: Westera, P.. Universidad Federal Do Abc; Brasil Fil: Katime Santrich, O. J.. Universidade Estadual de Santa Cruz; Brasil Fil: Bica, E.. Universidade Federal do Rio Grande do Sul; Brasil Fil: Sanmartim, D.. Rubin Observatory Project Office; Estados Unidos Fil: Correa Quint, B.. Rubin Observatory Project Office; Estados Unidos Fil: Fraga, L.. Laboratório Nacional de Astrofísica; Brasil |
description |
The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts triggered by the multiple interactions between the SMC and the Large Magellanic Cloud, a significant (∼0.5 dex) metallicity dispersion for the SMC cluster population younger than about 7.5 Gyr, and multiple chemical evolution models tracing very different paths through the observed age–metallicity relation of the SMC. There is no doubt that these processes were complex. Therefore, a step-by-step strategy is required in order to better understand the SMC chemical evolution. We adopted an existing framework to split the SMC intoregions on the sky, and we focus on the west halo in this work, which contains the oldest and most metal-poor stellar populations and is moving away from the SMC, that is, in an opposite motion with respect to the Magellanic Bridge. We present a sample containing ∼60% of all west halo clusters to represent the region well, and we identify a clear age–metallicity relation with a tight dispersionthat exhibits a 0.5 dex metallicity dip about 6 Gyr ago. We ran chemical evolution models and discuss possible scenarios to explain this metallicity dip, the most likely being a major merger accelerating the SFR after the event. This merger should be combined with inefficient internal gas mixing within the SMC and different SFRs in different SMC regions because the same metallicity dip is not seen in the AMR of the SMC combining clusters from all regions. We try to explain the scenario to better understand the SMC chemo-dynamical history. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/231603 Saroon, S.; Dias, B.; Tsujimoto, T.; Parisi, Maria Celeste; Maia, F.; et al.; The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters; EDP Sciences; Astronomy and Astrophysics; 677; 9-2023 1432-0746 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/231603 |
identifier_str_mv |
Saroon, S.; Dias, B.; Tsujimoto, T.; Parisi, Maria Celeste; Maia, F.; et al.; The VISCACHA survey. VIII. Chemical evolution history of the Small Magellanic Cloud west halo clusters; EDP Sciences; Astronomy and Astrophysics; 677; 9-2023 1432-0746 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2023/09/aa46648-23/aa46648-23.html info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202346648 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
EDP Sciences |
publisher.none.fl_str_mv |
EDP Sciences |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613273292374016 |
score |
13.070432 |