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dc.contributor.authorJaviel, Sandro Caldeirapt_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorKerber, Leandro de Oliveirapt_BR
dc.date.accessioned2014-07-24T02:04:25Zpt_BR
dc.date.issued2005pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/98519pt_BR
dc.description.abstractWe present the analysis of deep colour–magnitude diagrams (CMDs) of 6 stellar fields in the LMC. The data were obtained using HST/WFPC2 in the F814W (∼I) and F555W (∼V) filters, reaching V555 ∼ 26.5.We discuss and apply a method of correcting CMDs for photometric incompleteness. A method to generate artificial CMDs based on a model star formation history is also developed. This method incorporates photometric error effects, unresolved binaries, reddening and allows use of different forms of the initial mass function and of the SFH itself. We use the Partial Models Method, as presented by Gallart and others, for CMD modelling, and include control experiments to prove its validity in a search for constraints on the Large Magellanic Cloud star formation history in different regions. Reliable star formation histories for each field are recovered by this method. In all fields, a gap in star formation with τ ∼ 700 Myr is observed. Field-to-field variations have also been observed. The two fields near the LMC bar present some significant star forming events, having formed both young (τ <∼ 1 Gyr) and old (τ >∼ 10 Gyr) stars, with a clear gap from 3−6 Gyr. Two other fields display quite similar SFHs, with increased star formation having taken place at τ - ~ 2−3 Gyr and 6 <∼ τ <∼ 10 Gyr. The remaining two fields present star formation histories closer to uniform, with no clear event of enhanced star formation.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and astrophysics. Vol. 431, no. 1 (Feb. 2005), p. 73-85pt_BR
dc.rightsOpen Accessen
dc.subjectAstronomiapt_BR
dc.subjectGalaxies: formationen
dc.subjectGalaxies: evolutionen
dc.subjectStars: statisticsen
dc.subjectStars: luminosity function, mass functionen
dc.subjectGalaxies: stellar contenten
dc.subjectStars: Hertzsprung-Russell (HR) and C-Men
dc.titleConstraints on the star formation history of the Large Magellanic Cloudpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000456064pt_BR
dc.type.originEstrangeiropt_BR


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