The real population of star clusters in the bar of the Large Magellanic Cloud

Autores
Piatti, Andres Eduardo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report results on star clusters located in the South-Eastern half of the Large Magellanic (LMC) bar from WashingtonCT1photom-etry. Using appropriate kernel density estimators we detected 73 star cluster candidates, three of which do not show any detectabletrace of star cluster sequences in their colour-magnitude diagrams (CMDs). We did not detect other 38 previously catalogued clusters,which could not be recognized when visually inspecting theCandT1images either; the distribution of stars in their respective fieldsdo not resemble that of an stellar aggregate. They represent∼33 per cent of all catalogued objects located within the analysed LMCbar field. From matching theoretical isochrones to the cluster CMDs cleaned from field star contamination, we derived ages in therange 7.2Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Materia
CLUSTERS
MAGELLANIC CLOUDS
TECHNIQUES: PHOTOMETRIC
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:11336/80738
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The real population of star clusters in the bar of the Large Magellanic CloudPiatti, Andres EduardoCLUSTERSMAGELLANIC CLOUDSTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report results on star clusters located in the South-Eastern half of the Large Magellanic (LMC) bar from WashingtonCT1photom-etry. Using appropriate kernel density estimators we detected 73 star cluster candidates, three of which do not show any detectabletrace of star cluster sequences in their colour-magnitude diagrams (CMDs). We did not detect other 38 previously catalogued clusters,which could not be recognized when visually inspecting theCandT1images either; the distribution of stars in their respective fieldsdo not resemble that of an stellar aggregate. They represent∼33 per cent of all catalogued objects located within the analysed LMCbar field. From matching theoretical isochrones to the cluster CMDs cleaned from field star contamination, we derived ages in therange 7.2<log(tyr−1)<10.1. As far as we are aware, this is the first time homogeneous age estimates based on resolved stellar photometry are obtained for most of the studied clusters. We built the cluster frequency (CF) for the surveyed area, and found that themajor star cluster formation activity has taken place during the period log(tyr−1)∼8.0 – 9.0. Since∼100 Myr ago, clusters have beenformed during few bursting formation episodes. When comparing the observed CF to that recovered from the star formation rate wefound noticeable differences, which suggests that field star and star cluster formation histories could have been significantly different.Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaEDP Sciences2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80738Piatti, Andres Eduardo; The real population of star clusters in the bar of the Large Magellanic Cloud; EDP Sciences; Astronomy and Astrophysics; 606; A21; 9-2017; 1-130004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2017/10/aa31246-17/aa31246-17.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731246info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:34Zoai:ri.conicet.gov.ar:11336/80738instacron: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 09:36:34.272CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The real population of star clusters in the bar of the Large Magellanic Cloud
title The real population of star clusters in the bar of the Large Magellanic Cloud
spellingShingle The real population of star clusters in the bar of the Large Magellanic Cloud
Piatti, Andres Eduardo
CLUSTERS
MAGELLANIC CLOUDS
TECHNIQUES: PHOTOMETRIC
title_short The real population of star clusters in the bar of the Large Magellanic Cloud
title_full The real population of star clusters in the bar of the Large Magellanic Cloud
title_fullStr The real population of star clusters in the bar of the Large Magellanic Cloud
title_full_unstemmed The real population of star clusters in the bar of the Large Magellanic Cloud
title_sort The real population of star clusters in the bar of the Large Magellanic Cloud
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
author_role author
dc.subject.none.fl_str_mv CLUSTERS
MAGELLANIC CLOUDS
TECHNIQUES: PHOTOMETRIC
topic CLUSTERS
MAGELLANIC CLOUDS
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report results on star clusters located in the South-Eastern half of the Large Magellanic (LMC) bar from WashingtonCT1photom-etry. Using appropriate kernel density estimators we detected 73 star cluster candidates, three of which do not show any detectabletrace of star cluster sequences in their colour-magnitude diagrams (CMDs). We did not detect other 38 previously catalogued clusters,which could not be recognized when visually inspecting theCandT1images either; the distribution of stars in their respective fieldsdo not resemble that of an stellar aggregate. They represent∼33 per cent of all catalogued objects located within the analysed LMCbar field. From matching theoretical isochrones to the cluster CMDs cleaned from field star contamination, we derived ages in therange 7.2<log(tyr−1)<10.1. As far as we are aware, this is the first time homogeneous age estimates based on resolved stellar photometry are obtained for most of the studied clusters. We built the cluster frequency (CF) for the surveyed area, and found that themajor star cluster formation activity has taken place during the period log(tyr−1)∼8.0 – 9.0. Since∼100 Myr ago, clusters have beenformed during few bursting formation episodes. When comparing the observed CF to that recovered from the star formation rate wefound noticeable differences, which suggests that field star and star cluster formation histories could have been significantly different.
Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
description We report results on star clusters located in the South-Eastern half of the Large Magellanic (LMC) bar from WashingtonCT1photom-etry. Using appropriate kernel density estimators we detected 73 star cluster candidates, three of which do not show any detectabletrace of star cluster sequences in their colour-magnitude diagrams (CMDs). We did not detect other 38 previously catalogued clusters,which could not be recognized when visually inspecting theCandT1images either; the distribution of stars in their respective fieldsdo not resemble that of an stellar aggregate. They represent∼33 per cent of all catalogued objects located within the analysed LMCbar field. From matching theoretical isochrones to the cluster CMDs cleaned from field star contamination, we derived ages in therange 7.2<log(tyr−1)<10.1. As far as we are aware, this is the first time homogeneous age estimates based on resolved stellar photometry are obtained for most of the studied clusters. We built the cluster frequency (CF) for the surveyed area, and found that themajor star cluster formation activity has taken place during the period log(tyr−1)∼8.0 – 9.0. Since∼100 Myr ago, clusters have beenformed during few bursting formation episodes. When comparing the observed CF to that recovered from the star formation rate wefound noticeable differences, which suggests that field star and star cluster formation histories could have been significantly different.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
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/11336/80738
Piatti, Andres Eduardo; The real population of star clusters in the bar of the Large Magellanic Cloud; EDP Sciences; Astronomy and Astrophysics; 606; A21; 9-2017; 1-13
0004-6361
1432-0746
CONICET Digital
CONICET
url http://hdl.handle.net/11336/80738
identifier_str_mv Piatti, Andres Eduardo; The real population of star clusters in the bar of the Large Magellanic Cloud; EDP Sciences; Astronomy and Astrophysics; 606; A21; 9-2017; 1-13
0004-6361
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/abs/2017/10/aa31246-17/aa31246-17.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731246
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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score 13.069144

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