Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898

Autores
Chiosi, E.; Baume, Gustavo Luis; Carraro, G.; Costa, E.; Vallenari, A.; Méndez, R. A.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper we present a study and comparison of the star formation rates (SFR) in the fields around NGC 1898 and NGC 2154, two intermediate-age star clusters located in very different regions of the Large Magellanic Cloud. We also present a photometric study of NGC 1898, and of seven minor clusters which happen to fall in the field of NGC 1898, for which basic parameters were so far unknown. We do not focus on NGC 2154, because this cluster was already investigated in Baume et al. 2007, using the same theoretical tools. The ages of the clusters were derived by means of the isochrone fitting method on their clean color-magnitude diagrams. Two distinct populations of clusters were found: one cluster (NGC 2154) has a mean age of 1.7 Gyr, with indication of extended star formation over roughly a 1 Gyr period, while all the others have ages between 100 and 200 Myr. The SFRs of the adjacent fields were inferred using the downhill-simplex algorithm. Both SFRs show enhancements at 200, 400, 800 Myr, and at 1, 6, and 8 Gyr. These bursts in the SFR are probably the result of dynamical interactions between the Magellanic Clouds (MCs), and of the MCs with the Milky Way.
Fil: Chiosi, E.. Osservatorio Astronomico di Padova; Italia
Fil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Carraro, G.. European Southern Observarory; Chile
Fil: Costa, E.. Universidad de Chile. Departamento de Astronomía; Chile
Fil: Vallenari, A.. Osservatorio Astronomico di Padova; Italia
Fil: Méndez, R. A.. Universidad de Chile. Departamento de Astronomía; Chile
Materia
Magellanic Clouds
Star clusters
Stellar content
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10334
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10334
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898Chiosi, E.Baume, Gustavo LuisCarraro, G.Costa, E.Vallenari, A.Méndez, R. A.Magellanic CloudsStar clustersStellar contenthttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this paper we present a study and comparison of the star formation rates (SFR) in the fields around NGC 1898 and NGC 2154, two intermediate-age star clusters located in very different regions of the Large Magellanic Cloud. We also present a photometric study of NGC 1898, and of seven minor clusters which happen to fall in the field of NGC 1898, for which basic parameters were so far unknown. We do not focus on NGC 2154, because this cluster was already investigated in Baume et al. 2007, using the same theoretical tools. The ages of the clusters were derived by means of the isochrone fitting method on their clean color-magnitude diagrams. Two distinct populations of clusters were found: one cluster (NGC 2154) has a mean age of 1.7 Gyr, with indication of extended star formation over roughly a 1 Gyr period, while all the others have ages between 100 and 200 Myr. The SFRs of the adjacent fields were inferred using the downhill-simplex algorithm. Both SFRs show enhancements at 200, 400, 800 Myr, and at 1, 6, and 8 Gyr. These bursts in the SFR are probably the result of dynamical interactions between the Magellanic Clouds (MCs), and of the MCs with the Milky Way.Fil: Chiosi, E.. Osservatorio Astronomico di Padova; ItaliaFil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Carraro, G.. European Southern Observarory; ChileFil: Costa, E.. Universidad de Chile. Departamento de Astronomía; ChileFil: Vallenari, A.. Osservatorio Astronomico di Padova; ItaliaFil: Méndez, R. A.. Universidad de Chile. Departamento de Astronomía; ChileWiley Blackwell Publishing, Inc2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10334Chiosi, E.; Baume, Gustavo Luis; Carraro, G.; Costa, E.; Vallenari, A.; et al.; Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898; Wiley Blackwell Publishing, Inc; Monthly Notices Of The Royal Astronomical Society; 426; 11-2012; 1884-18920035-8711enginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21835.xinfo:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/426/3/1884info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:10Zoai:ri.conicet.gov.ar:11336/10334instacron: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 09:38:10.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
title Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
spellingShingle Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
Chiosi, E.
Magellanic Clouds
Star clusters
Stellar content
title_short Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
title_full Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
title_fullStr Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
title_full_unstemmed Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
title_sort Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898
dc.creator.none.fl_str_mv Chiosi, E.
Baume, Gustavo Luis
Carraro, G.
Costa, E.
Vallenari, A.
Méndez, R. A.
author Chiosi, E.
author_facet Chiosi, E.
Baume, Gustavo Luis
Carraro, G.
Costa, E.
Vallenari, A.
Méndez, R. A.
author_role author
author2 Baume, Gustavo Luis
Carraro, G.
Costa, E.
Vallenari, A.
Méndez, R. A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Magellanic Clouds
Star clusters
Stellar content
topic Magellanic Clouds
Star clusters
Stellar content
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this paper we present a study and comparison of the star formation rates (SFR) in the fields around NGC 1898 and NGC 2154, two intermediate-age star clusters located in very different regions of the Large Magellanic Cloud. We also present a photometric study of NGC 1898, and of seven minor clusters which happen to fall in the field of NGC 1898, for which basic parameters were so far unknown. We do not focus on NGC 2154, because this cluster was already investigated in Baume et al. 2007, using the same theoretical tools. The ages of the clusters were derived by means of the isochrone fitting method on their clean color-magnitude diagrams. Two distinct populations of clusters were found: one cluster (NGC 2154) has a mean age of 1.7 Gyr, with indication of extended star formation over roughly a 1 Gyr period, while all the others have ages between 100 and 200 Myr. The SFRs of the adjacent fields were inferred using the downhill-simplex algorithm. Both SFRs show enhancements at 200, 400, 800 Myr, and at 1, 6, and 8 Gyr. These bursts in the SFR are probably the result of dynamical interactions between the Magellanic Clouds (MCs), and of the MCs with the Milky Way.
Fil: Chiosi, E.. Osservatorio Astronomico di Padova; Italia
Fil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Carraro, G.. European Southern Observarory; Chile
Fil: Costa, E.. Universidad de Chile. Departamento de Astronomía; Chile
Fil: Vallenari, A.. Osservatorio Astronomico di Padova; Italia
Fil: Méndez, R. A.. Universidad de Chile. Departamento de Astronomía; Chile
description In this paper we present a study and comparison of the star formation rates (SFR) in the fields around NGC 1898 and NGC 2154, two intermediate-age star clusters located in very different regions of the Large Magellanic Cloud. We also present a photometric study of NGC 1898, and of seven minor clusters which happen to fall in the field of NGC 1898, for which basic parameters were so far unknown. We do not focus on NGC 2154, because this cluster was already investigated in Baume et al. 2007, using the same theoretical tools. The ages of the clusters were derived by means of the isochrone fitting method on their clean color-magnitude diagrams. Two distinct populations of clusters were found: one cluster (NGC 2154) has a mean age of 1.7 Gyr, with indication of extended star formation over roughly a 1 Gyr period, while all the others have ages between 100 and 200 Myr. The SFRs of the adjacent fields were inferred using the downhill-simplex algorithm. Both SFRs show enhancements at 200, 400, 800 Myr, and at 1, 6, and 8 Gyr. These bursts in the SFR are probably the result of dynamical interactions between the Magellanic Clouds (MCs), and of the MCs with the Milky Way.
publishDate 2012
dc.date.none.fl_str_mv 2012-11
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/11336/10334
Chiosi, E.; Baume, Gustavo Luis; Carraro, G.; Costa, E.; Vallenari, A.; et al.; Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898; Wiley Blackwell Publishing, Inc; Monthly Notices Of The Royal Astronomical Society; 426; 11-2012; 1884-1892
0035-8711
url http://hdl.handle.net/11336/10334
identifier_str_mv Chiosi, E.; Baume, Gustavo Luis; Carraro, G.; Costa, E.; Vallenari, A.; et al.; Stellar populations in the surrounding field of the LMC clusters NGC 2154 and NGC 1898; Wiley Blackwell Publishing, Inc; Monthly Notices Of The Royal Astronomical Society; 426; 11-2012; 1884-1892
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21835.x
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/426/3/1884
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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score 13.070432

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