Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/89970 |
Resumo: | Colour–magnitude diagrams are presented for the first time for L32, L38, K28 (L43), K44 (L68) and L116, which are clusters projected on to the outer parts of the Small Magellanic Cloud (SMC). The photometry was carried out in the Washington system C and T1 filters, allowing the determination of ages by means of the magnitude difference between the red giant clump and the main-sequence turn-off, and metallicities from the red giant branch locus. The clusters have ages in the range 2–6 Gyr, and metallicities in the range -1.65 < [Fe/H] < -1.10, increasing the sample of intermediate-age clusters in the SMC. L116, the outermost cluster projected on to the SMC, is a foreground cluster, and somewhat closer to us than the Large Magellanic Cloud. Our results, combined with those for other clusters in the literature, show epochs of sudden chemical enrichment in the age–metallicity plane, which favour a bursting star formation history as opposed to a continuous one for the SMC. |
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Piatti, Andres E.Santos Junior, Joao Francisco Coelho dosClaria Olmedo, Juan JoseBica, Eduardo Luiz DamianiSarajedini, AtaGeisler, Doug2014-03-29T01:51:40Z20010035-8711http://hdl.handle.net/10183/89970000292122Colour–magnitude diagrams are presented for the first time for L32, L38, K28 (L43), K44 (L68) and L116, which are clusters projected on to the outer parts of the Small Magellanic Cloud (SMC). The photometry was carried out in the Washington system C and T1 filters, allowing the determination of ages by means of the magnitude difference between the red giant clump and the main-sequence turn-off, and metallicities from the red giant branch locus. The clusters have ages in the range 2–6 Gyr, and metallicities in the range -1.65 < [Fe/H] < -1.10, increasing the sample of intermediate-age clusters in the SMC. L116, the outermost cluster projected on to the SMC, is a foreground cluster, and somewhat closer to us than the Large Magellanic Cloud. Our results, combined with those for other clusters in the literature, show epochs of sudden chemical enrichment in the age–metallicity plane, which favour a bursting star formation history as opposed to a continuous one for the SMC.application/pdfengMonthly notices of the Royal Astronomical Society. Oxford. Vol. 325, no. 2 (Aug. 2001), p. 792-802Fotometria astronômicaAglomerados estelares globularesPequena Nuvem de MagalhãesAglomerados estelaresTechniques: photometricMagellanic cloudsGalaxies: star clustersAges and metallicities of five intermediate-age star clusters projected towards the Small Magellanic CloudEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000292122.pdf000292122.pdfTexto completo (inglês)application/pdf1370684http://www.lume.ufrgs.br/bitstream/10183/89970/1/000292122.pdf49996a2de258e4f52a6c3574c91948feMD51TEXT000292122.pdf.txt000292122.pdf.txtExtracted Texttext/plain49018http://www.lume.ufrgs.br/bitstream/10183/89970/2/000292122.pdf.txt400138e46e4d4e4796885c754a33f56eMD52THUMBNAIL000292122.pdf.jpg000292122.pdf.jpgGenerated Thumbnailimage/jpeg1859http://www.lume.ufrgs.br/bitstream/10183/89970/3/000292122.pdf.jpg12d497e6dd3d46536ae788e6085fa840MD5310183/899702024-04-13 06:45:25.609495oai:www.lume.ufrgs.br:10183/89970Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-04-13T09:45:25Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
title |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
spellingShingle |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud Piatti, Andres E. Fotometria astronômica Aglomerados estelares globulares Pequena Nuvem de Magalhães Aglomerados estelares Techniques: photometric Magellanic clouds Galaxies: star clusters |
title_short |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
title_full |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
title_fullStr |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
title_full_unstemmed |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
title_sort |
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud |
author |
Piatti, Andres E. |
author_facet |
Piatti, Andres E. Santos Junior, Joao Francisco Coelho dos Claria Olmedo, Juan Jose Bica, Eduardo Luiz Damiani Sarajedini, Ata Geisler, Doug |
author_role |
author |
author2 |
Santos Junior, Joao Francisco Coelho dos Claria Olmedo, Juan Jose Bica, Eduardo Luiz Damiani Sarajedini, Ata Geisler, Doug |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Piatti, Andres E. Santos Junior, Joao Francisco Coelho dos Claria Olmedo, Juan Jose Bica, Eduardo Luiz Damiani Sarajedini, Ata Geisler, Doug |
dc.subject.por.fl_str_mv |
Fotometria astronômica Aglomerados estelares globulares Pequena Nuvem de Magalhães Aglomerados estelares |
topic |
Fotometria astronômica Aglomerados estelares globulares Pequena Nuvem de Magalhães Aglomerados estelares Techniques: photometric Magellanic clouds Galaxies: star clusters |
dc.subject.eng.fl_str_mv |
Techniques: photometric Magellanic clouds Galaxies: star clusters |
description |
Colour–magnitude diagrams are presented for the first time for L32, L38, K28 (L43), K44 (L68) and L116, which are clusters projected on to the outer parts of the Small Magellanic Cloud (SMC). The photometry was carried out in the Washington system C and T1 filters, allowing the determination of ages by means of the magnitude difference between the red giant clump and the main-sequence turn-off, and metallicities from the red giant branch locus. The clusters have ages in the range 2–6 Gyr, and metallicities in the range -1.65 < [Fe/H] < -1.10, increasing the sample of intermediate-age clusters in the SMC. L116, the outermost cluster projected on to the SMC, is a foreground cluster, and somewhat closer to us than the Large Magellanic Cloud. Our results, combined with those for other clusters in the literature, show epochs of sudden chemical enrichment in the age–metallicity plane, which favour a bursting star formation history as opposed to a continuous one for the SMC. |
publishDate |
2001 |
dc.date.issued.fl_str_mv |
2001 |
dc.date.accessioned.fl_str_mv |
2014-03-29T01:51:40Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
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http://hdl.handle.net/10183/89970 |
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0035-8711 |
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000292122 |
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http://hdl.handle.net/10183/89970 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the Royal Astronomical Society. Oxford. Vol. 325, no. 2 (Aug. 2001), p. 792-802 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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