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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/64328
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dc.creatorEduardo Luiz Damiani Bicapt_BR
dc.creatorMaría Celeste Parisipt_BR
dc.creatorStefano Oliveira de Souzapt_BR
dc.creatorBeatriz Leonor Silveira Barbuypt_BR
dc.creatorFrancisco Ferreira de Souza Maiapt_BR
dc.creatorRaphael Augusto Pereira de Oliveirapt_BR
dc.creatorBruno Moreira de Souza Diaspt_BR
dc.creatorJoão Francisco Coelho dos Santos Juniorpt_BR
dc.creatorJoão Pedro Rochapt_BR
dc.creatorLeandro de Oliveira Kerberpt_BR
dc.creatorJoão Francisco Gardin de Carvalhopt_BR
dc.creatorAna Cristina Moreira Machado Zadra Armondpt_BR
dc.date.accessioned2024-02-20T16:43:48Z-
dc.date.available2024-02-20T16:43:48Z-
dc.date.issued2022-
dc.citation.volume517pt_BR
dc.citation.issue1pt_BR
dc.citation.spageL41pt_BR
dc.citation.epageL45pt_BR
dc.identifier.doihttps://doi.org/10.1093/mnrasl/slac108pt_BR
dc.identifier.issn1745-3933pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/64328-
dc.description.resumoWe present the analysis of three faint clusters of the Small Magellanic Cloud RZ 82, HW 42, and RZ 158. We employed the SOAR telescope instrument SAM with adaptive optics, allowing us to reach to V ∼ 23–24 mag, unprecedentedly, a depth sufficient to measure ages of up to about 10–12 Gyr. All three clusters are resolved to their centres, and the resulting colour–magnitude diagrams (CMDs) allow us to derive ages of 3.9, 2.6, and 4.8 Gyr, respectively. These results are significantly younger than previous determinations (7.1, 5.0, and 8.3 Gyr, respectively), based on integrated photometry or shallower CMDs. We rule out older ages for these clusters based on deep photometry and statistical isochrone fitting. We also estimate metallicities for the three clusters of [Fe/H] = −0.68, −0.57, and −0.90, respectively. These updated ages and metallicities are in good agreement with the age-metallicity relation for the bulk of SMC clusters. Total cluster masses ranging from ∼ 7–11 · 103 M were estimated from integrated flux, consistent with masses estimated for other SMC clusters of similar ages. These results reduce the number of SMC clusters known to be older than about 5 Gyr and highlight the need of deep and spatially resolved photometry to determine accurate ages for older low-luminosity SMC star clusters.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiropt_BR
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulopt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society: Letters-
dc.rightsAcesso Abertopt_BR
dc.subjectMagellanic cloudspt_BR
dc.subjectStar clusterspt_BR
dc.subject.otherAglomerado de estrelaspt_BR
dc.titleThe VISCACHA survey - V. Rejuvenating three faint SMC clusterspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://academic.oup.com/mnrasl/article/517/1/L41/6701629pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9382-3986pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8052-969Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9264-4417pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2569-4032pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4778-9243pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4254-7111pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1794-6356pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7561-5067pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7435-8748pt_BR
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