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dc.contributor.authorBica, Eduardo Luiz Damianipt_BR
dc.contributor.authorAlloin, Danielle Mariept_BR
dc.date.accessioned2014-07-22T02:03:36Zpt_BR
dc.date.issued1987pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/98357pt_BR
dc.description.abstractIn the equivalent width (W) vs absolute magnitude (Mʙ) diagram corresponding to the best metallic features in the visible range, CN and Mg + MgH, field giant E and S0 galaxies are shifted towards weaker line-strengths with respect to galaxies belonging to the Virgo and Fornax clusters. We find evidence that this is a genuine stellar population effect. For part of the deviating galaxies it results from an aperture effect, galaxies at larger redshifts including more of the metal poor component outside their nucleus. For the rest, the shift is due to a variable content of intermediate age components in the range 4-10 Gyr, superimposed on the very old underlying population.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and Astrophysics. Berlin. Vol. 181, no. 2 (July 1987), p. 270-272pt_BR
dc.rightsOpen Accessen
dc.subjectAstrofisica extragalaticapt_BR
dc.subjectGalaxies: evolution ofen
dc.subjectGalaxies: stellar content of galaxies : ellipticalen
dc.subjectMetalicidadept_BR
dc.subjectClusters of galaxiesen
dc.subjectEvolucao galaticapt_BR
dc.subjectAglomerados de galaxiaspt_BR
dc.subjectGalaxias elipticaspt_BR
dc.titleThe metallicity versus luminosity relationship for early-type galaxiespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000115592pt_BR
dc.type.originEstrangeiropt_BR


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