Show simple item record

dc.contributor.authorBalbinot, Eduardopt_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorKerber, Leandro de Oliveirapt_BR
dc.contributor.authorBarbuy, Beatrizpt_BR
dc.contributor.authorDias, Bruno Moreira de Souzapt_BR
dc.date.accessioned2014-04-08T01:50:01Zpt_BR
dc.date.issued2010pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/90459pt_BR
dc.description.abstractThe Large Magellanic Cloud (LMC) has a rich star cluster system spanning a wide range of ages and masses. One striking feature of the LMC cluster system is the existence of an age gap between 3 and 10 Gyr. But this feature is not clearly seen among field stars. Three LMC fields containing relatively poor and sparse clusters whose integrated colours are consistent with those of intermediate-age simple stellar populations have been imaged in BVI with the Optical Imager (SOI) at the Southern Telescope for Astrophysical Research (SOAR). A total of six clusters, five of them with estimated initial massesM <10 4Mʘ, were studied in these fields. Photometry was performed and colour–magnitude diagrams (CMDs) were built using standard point spread function fitting methods. The faintest stars measured reach V ~ 23. The CMD was cleaned from field contamination by making use of the three-dimensional colour and magnitude space available in order to select stars in excess relative to the field. A statistical CMD comparison method was developed for this purpose. The subtraction method has proven to be successful, yielding cleaned CMDs consistent with a simple stellar population. The intermediate-age candidates were found to be the oldest in our sample, with ages between 1 and 2 Gyr. The remaining clusters found in the SOAR/SOI have ages ranging from 100 to 200 Myr. Our analysis has conclusively shown that none of the relatively low-mass clusters studied by us belongs to the LMC age gap.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 404, no. 3 (May 2010), p. 1625-1632pt_BR
dc.rightsOpen Accessen
dc.subjectStars: statisticsen
dc.subjectAglomerados estelarespt_BR
dc.subjectNuvens de magalhaespt_BR
dc.subjectMagellanic cloudsen
dc.subjectFormacao de estrelaspt_BR
dc.subjectGalaxies: star clustersen
dc.subjectGalaxies: stellar contenten
dc.subjectFotometria astronômicapt_BR
dc.titleProbing the Large Magellanic Cloud age gap at intermediate cluster massespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000750060pt_BR
dc.type.originEstrangeiropt_BR


Files in this item

Thumbnail
   

This item is licensed under a Creative Commons License

Show simple item record