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dc.contributor.authorFerrari, Fabriciopt_BR
dc.contributor.authorPastoriza, Miriani Griseldapt_BR
dc.contributor.authorMacchetto, Ferdinando Ducciopt_BR
dc.contributor.authorBonatto, Charles Josept_BR
dc.contributor.authorPanagia, Ninopt_BR
dc.contributor.authorSparks, William B.pt_BR
dc.date.accessioned2014-07-24T02:04:22Zpt_BR
dc.date.issued2002pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/98512pt_BR
dc.description.abstractWe present mid-IR photometric properties for a sample of 28 early-type galaxies observed at 6.75, 9.63 and 15 m with the ISOCAM instrument on board the ISO satellite. We nd total mid-IR luminosities in the range (3−42) x 108 Lʘ. The spectral energy distributions (SED) of the galaxies were derived using the mid-IR data together with previously published UV, optical and near-IR data. These SEDs clearly show a mid-IR emission coming from dust heated at T- ~ 260 K. Dust grains properties are inferred from the mid-IR colors. The masses of the hot dust component are in the range 10−400 Mʘ . The relationship between the masses derived from mid-IR observations and those derived from visual extinction are discussed. The possible common heating source for the gas and dust is investigated through the correlations between H and mid-IR luminosities.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and astrophysics. Les Ulis. Vol. 389, no. 2 (July 2002), p. 355-366pt_BR
dc.rightsOpen Accessen
dc.subjectFotometria astronômicapt_BR
dc.subjectGalaxies: elliptical and lenticular, cDen
dc.subjectGaláxiaspt_BR
dc.subjectISM: generalen
dc.subjectFontes de infravermelhopt_BR
dc.subjectMateria interestelarpt_BR
dc.titleSurvey of the ISM in early-type galaxiespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000323880pt_BR
dc.type.originEstrangeiropt_BR


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