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dc.contributor.authorBonatto, Charles Josept_BR
dc.contributor.authorBica, Eduardo Luiz Damianipt_BR
dc.date.accessioned2014-04-08T01:50:02Zpt_BR
dc.date.issued2010pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/90460pt_BR
dc.description.abstractWe investigate the degree of spatial correlation among extended structures in the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC). To this purpose, we work with subsamples characterized by different properties such as age and size, taken from the updated catalogue of Bica et al. or gathered in the present work. The structures are classified as star clusters or non-clusters (basically, nebular complexes and their stellar associations). The radius distribution functions follow power laws (dN/dR ∝ R-α) with slopes and maximum radius (Rmax) that depend on object class (and age). Non-clusters are characterized by α ≈ 1.9 and Rmax < ~ 472 pc, while young clusters (age < ~10 Myr) have α ≈ 3.6 and Rmax < ~15 pc and old ones (age > ~600 Myr) have α ≈ 2.5 and Rmax < ~40 pc. Young clusters present a high degree of spatial self-correlation and, especially, correlate with star-forming structures, which does not occur with the old ones. This is consistent with the old clusters having been heavily mixed up, since their ages correspond to several LMC and SMC crossing times. On the other hand, with ages corresponding to fractions of the respective crossing times, the young clusters still trace most of their birthplace structural pattern. Also, small clusters (R < 10 pc), as well as small non-clusters (R <100 pc), are spatially self-correlated, while their large counterparts of both classes are not. The above results are consistent with a hierarchical star formation scenario for the LMC and SMC.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 403, no. 2 (Apr. 2010), p. 996-1008pt_BR
dc.rightsOpen Accessen
dc.subjectGrande Nuvem de Magalhãespt_BR
dc.subjectMagellanic cloudsen
dc.subjectPequena Nuvem de Magalhãespt_BR
dc.subjectAglomerados globularespt_BR
dc.titleHierarchical structures in the Large and Small Magellanic Cloudspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000736641pt_BR
dc.type.originEstrangeiropt_BR


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