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dc.contributor.authorBonatto, Charles Josept_BR
dc.contributor.authorCampos, Fabíolapt_BR
dc.contributor.authorKepler, Souza Oliveirapt_BR
dc.contributor.authorBica, Eduardo Luiz Damianipt_BR
dc.date.accessioned2015-09-18T01:58:35Zpt_BR
dc.date.issued2015pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/126995pt_BR
dc.description.abstractWe present a simple approach for obtaining robust values of astrophysical parameters from the observed colour–magnitude diagrams (CMDs) of star clusters. The basic inputs are the Hess diagram built with the photometric measurements of a star cluster and a set of isochrones covering wide ranges of age and metallicity. In short, each isochrone is shifted in apparent distance modulus and colour excess until it crosses over the maximum possible Hess density. Repeating this step for all available isochrones leads to the construction of the solution map, in which the optimum values of age and metallicity – as well as foreground/background reddening and distance from the Sun – can be searched for. Controlled tests with simulated CMDs show that the approach is efficient in recovering the input values. We apply the approach to the open clusters M 67, NGC 6791 and NGC 2635, which are characterized by different ages, metallicities and distances from the Sun.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the Royal Astronomical Society. Oxford. Vol. 450, no. 3 (July 2015), p. 2500–2505pt_BR
dc.rightsOpen Accessen
dc.subjectHertzsprungen
dc.subjectAglomerados abertos e associaçõespt_BR
dc.subjectRussell and colouren
dc.subjectMagnitude diagramsen
dc.subjectOpen clusters and associations: generalen
dc.titleExtracting parameters from colour–magnitude diagramspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000972253pt_BR
dc.type.originEstrangeiropt_BR


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