Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)

Autores
Piatti, Andres Eduardo; Sarajedini, A.; Geisler, Doug; Bica, E.; Claria Olmedo, Juan Jose
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We carried out Washington system photometry of the intermediate-age Large Magellanic Cloud (LMC) star clusters NGC 2155 and SL 896 (LW 480). We derive ages and metallicities from the T_1 versus C-T_1 colour-magnitude diagrams (CMDs). For the first time an age has been obtained for SL 896, 2.3 +/- 0.5 Gyr. For NGC 2155 we derive 3.6 +/- 0.7 Gyr. The two clusters basically define the lower age limit of the LMC age gap. In particulr, NGC 2155 is confirmed as the oldest intermediate-age LMC cluster so far estudied. The derived metallicities are -0.9 +/- 0.2 and -0.6 +/- 0.2 for NGC 2155 and SL 896, respectively. We also studied the CMDs of the surrounding fields, which have a dominant turn-off comparable to that of the clusters themselves, and similar metallicity, showing that one is dealing with an intermediate-age disc where clusters and field stars have the same origin. We inserted the present clusters in the LMC and Small Magellanic Cloud (SMC) age-metallicity relations, using a set of homogeneous determinations with the same method as in our previous studies, now totalling 15 LMC clusters and four SMC clusters, together with same additional values from the literature. The LMC and SMC age-metallicity relations appear to be remarkably complementary, since the SMC was actively star-forming during the LMC quiescent age gap epoch.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Sarajedini, A.. University of Florida; Estados Unidos
Fil: Geisler, Doug. Universidad de Concepción; Chile
Fil: Bica, E.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Large Magellanic Cloud
Washington photometry
Star cluster
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:11336/22349
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/22349
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)Piatti, Andres EduardoSarajedini, A.Geisler, DougBica, E.Claria Olmedo, Juan JoseLarge Magellanic CloudWashington photometryStar clusterhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We carried out Washington system photometry of the intermediate-age Large Magellanic Cloud (LMC) star clusters NGC 2155 and SL 896 (LW 480). We derive ages and metallicities from the T_1 versus C-T_1 colour-magnitude diagrams (CMDs). For the first time an age has been obtained for SL 896, 2.3 +/- 0.5 Gyr. For NGC 2155 we derive 3.6 +/- 0.7 Gyr. The two clusters basically define the lower age limit of the LMC age gap. In particulr, NGC 2155 is confirmed as the oldest intermediate-age LMC cluster so far estudied. The derived metallicities are -0.9 +/- 0.2 and -0.6 +/- 0.2 for NGC 2155 and SL 896, respectively. We also studied the CMDs of the surrounding fields, which have a dominant turn-off comparable to that of the clusters themselves, and similar metallicity, showing that one is dealing with an intermediate-age disc where clusters and field stars have the same origin. We inserted the present clusters in the LMC and Small Magellanic Cloud (SMC) age-metallicity relations, using a set of homogeneous determinations with the same method as in our previous studies, now totalling 15 LMC clusters and four SMC clusters, together with same additional values from the literature. The LMC and SMC age-metallicity relations appear to be remarkably complementary, since the SMC was actively star-forming during the LMC quiescent age gap epoch.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Sarajedini, A.. University of Florida; Estados UnidosFil: Geisler, Doug. Universidad de Concepción; ChileFil: Bica, E.. Universidade Federal do Rio Grande do Sul; BrasilFil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaOxford University Press2002-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22349Piatti, Andres Eduardo; Sarajedini, A.; Geisler, Doug; Bica, E.; Claria Olmedo, Juan Jose; Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480); Oxford University Press; Monthly Notices of the Royal Astronomical Society; 329; 3; 1-2002; 556-5660035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1046/j.1365-8711.2002.04994.x/fullinfo:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2002.04994.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.2002.04994.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:44Zoai:ri.conicet.gov.ar:11336/22349instacron: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 10:21:45.107CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
title Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
spellingShingle Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
Piatti, Andres Eduardo
Large Magellanic Cloud
Washington photometry
Star cluster
title_short Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
title_full Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
title_fullStr Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
title_full_unstemmed Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
title_sort Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480)
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
Sarajedini, A.
Geisler, Doug
Bica, E.
Claria Olmedo, Juan Jose
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
Sarajedini, A.
Geisler, Doug
Bica, E.
Claria Olmedo, Juan Jose
author_role author
author2 Sarajedini, A.
Geisler, Doug
Bica, E.
Claria Olmedo, Juan Jose
author2_role author
author
author
author
dc.subject.none.fl_str_mv Large Magellanic Cloud
Washington photometry
Star cluster
topic Large Magellanic Cloud
Washington photometry
Star cluster
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 carried out Washington system photometry of the intermediate-age Large Magellanic Cloud (LMC) star clusters NGC 2155 and SL 896 (LW 480). We derive ages and metallicities from the T_1 versus C-T_1 colour-magnitude diagrams (CMDs). For the first time an age has been obtained for SL 896, 2.3 +/- 0.5 Gyr. For NGC 2155 we derive 3.6 +/- 0.7 Gyr. The two clusters basically define the lower age limit of the LMC age gap. In particulr, NGC 2155 is confirmed as the oldest intermediate-age LMC cluster so far estudied. The derived metallicities are -0.9 +/- 0.2 and -0.6 +/- 0.2 for NGC 2155 and SL 896, respectively. We also studied the CMDs of the surrounding fields, which have a dominant turn-off comparable to that of the clusters themselves, and similar metallicity, showing that one is dealing with an intermediate-age disc where clusters and field stars have the same origin. We inserted the present clusters in the LMC and Small Magellanic Cloud (SMC) age-metallicity relations, using a set of homogeneous determinations with the same method as in our previous studies, now totalling 15 LMC clusters and four SMC clusters, together with same additional values from the literature. The LMC and SMC age-metallicity relations appear to be remarkably complementary, since the SMC was actively star-forming during the LMC quiescent age gap epoch.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Sarajedini, A.. University of Florida; Estados Unidos
Fil: Geisler, Doug. Universidad de Concepción; Chile
Fil: Bica, E.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description We carried out Washington system photometry of the intermediate-age Large Magellanic Cloud (LMC) star clusters NGC 2155 and SL 896 (LW 480). We derive ages and metallicities from the T_1 versus C-T_1 colour-magnitude diagrams (CMDs). For the first time an age has been obtained for SL 896, 2.3 +/- 0.5 Gyr. For NGC 2155 we derive 3.6 +/- 0.7 Gyr. The two clusters basically define the lower age limit of the LMC age gap. In particulr, NGC 2155 is confirmed as the oldest intermediate-age LMC cluster so far estudied. The derived metallicities are -0.9 +/- 0.2 and -0.6 +/- 0.2 for NGC 2155 and SL 896, respectively. We also studied the CMDs of the surrounding fields, which have a dominant turn-off comparable to that of the clusters themselves, and similar metallicity, showing that one is dealing with an intermediate-age disc where clusters and field stars have the same origin. We inserted the present clusters in the LMC and Small Magellanic Cloud (SMC) age-metallicity relations, using a set of homogeneous determinations with the same method as in our previous studies, now totalling 15 LMC clusters and four SMC clusters, together with same additional values from the literature. The LMC and SMC age-metallicity relations appear to be remarkably complementary, since the SMC was actively star-forming during the LMC quiescent age gap epoch.
publishDate 2002
dc.date.none.fl_str_mv 2002-01
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/11336/22349
Piatti, Andres Eduardo; Sarajedini, A.; Geisler, Doug; Bica, E.; Claria Olmedo, Juan Jose; Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480); Oxford University Press; Monthly Notices of the Royal Astronomical Society; 329; 3; 1-2002; 556-566
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22349
identifier_str_mv Piatti, Andres Eduardo; Sarajedini, A.; Geisler, Doug; Bica, E.; Claria Olmedo, Juan Jose; Constraining the LMC age gap: Washington photometry of NGC 2155 and SL 896 (LW 480); Oxford University Press; Monthly Notices of the Royal Astronomical Society; 329; 3; 1-2002; 556-566
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1046/j.1365-8711.2002.04994.x/full
info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2002.04994.x
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.2002.04994.x
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
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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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