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dc.contributor.authorPastoriza, Miriani Griseldapt_BR
dc.contributor.authorDonzelli, Carlos J.pt_BR
dc.contributor.authorBonatto, Charles Josept_BR
dc.date.accessioned2014-07-18T02:04:39Zpt_BR
dc.date.issued1999pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/98100pt_BR
dc.description.abstractIn this paper we investigate the nuclear activity and stellar population in a sample of 27 physical galaxy pairs. Equivalent widths of absorption features are used to characterise the nuclear stellar population according to templates: most galaxies of the sample have important flux contributions from stars younger than 108 years. According to classical diagnosticdiagrams the galaxies in our sample are either classified as H II regions or have emission line ratios near the transition zone between H II regions and LINERs. Based on the observed spectra, only 4 galaxies show LINER properties and 1 nucleus is a Seyfert 2. We found that the spectrum of a transition object (38% of the sample) can be described by a combination of an AGN with an HII region. As a result, 20 galaxies of the present sample may host a low-luminosity active nucleus.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and Astrophysics. Berlin. Vol. 347, no. 1 (July 1999), p. 55-62pt_BR
dc.rightsOpen Accessen
dc.subjectGalaxies: activeen
dc.subjectGaláxias ativaspt_BR
dc.subjectEspectros astronômicospt_BR
dc.subjectGalaxies: interactionsen
dc.subjectGalaxies: nucleien
dc.subjectGalaxies: stellar contenten
dc.titleNuclear activity and stellar population of a sample of interacting galaxiespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000269611pt_BR
dc.type.originEstrangeiropt_BR


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