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dc.contributor.authorPavani, Daniela Borgespt_BR
dc.contributor.authorBica, Eduardo Luiz Damianipt_BR
dc.contributor.authorAhumada, Andrea Veronicapt_BR
dc.contributor.authorClaria Olmedo, Juan Josept_BR
dc.date.accessioned2015-01-22T02:13:46Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/109129pt_BR
dc.description.abstract2MASS J and H photometry and integrated spectroscopy are employed to study the nature of the poorly populated compact concentration of stars Ruprecht 3, which was previously catalogued as an open cluster. The integrated spectrum remarkably resembles that of a moderately metal-rich globular cluster. The distribution of the object stars in the colour-magnitude diagram is compatible with that of a 1.5 ± 0.5 Gyr open cluster or older, depending on whether the bluer stars are interpreted as turnoff stars or blue stragglers, respectively. We derive for the object a distance from the Sun dʘ = 0.72+0.04 −0.03 kpc and a colour excess E(B−V) = 0.04. Although a globular cluster remnant cannot be ruled out, the integrated spectrum resemblance to that of a globular cluster probably reflects a stochastic effect owing to the few brighter stars. The structural and photometric properties of Ruprecht 3 are compatible with what would be expected for an intermediate-age open cluster remnant.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and astrophysics. Les Ulis. Vol. 399, no. 1 (Feb. 2003), p. 113-120pt_BR
dc.rightsOpen Accessen
dc.subjectGalaxy: open clusters and stellar associations: generalen
dc.subjectFotometria estelarpt_BR
dc.subjectEspectros estelarespt_BR
dc.subjectOpen clusters and associations: individual: Ruprecht 3en
dc.subjectMethods: observationalen
dc.subjectTechniques: spectroscopicen
dc.titleRuprecht 3 : an old star cluster remnant?pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000357078pt_BR
dc.type.originEstrangeiropt_BR


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