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dc.contributor.authorMason, Rachel E.pt_BR
dc.contributor.authorRodriguez-Ardila, Albertopt_BR
dc.contributor.authorMartins, Lucimara Pirespt_BR
dc.contributor.authorRiffel, Rogériopt_BR
dc.contributor.authorGonzalez Martin, Omairapt_BR
dc.contributor.authorRamos Almeida, Cristinapt_BR
dc.contributor.authorDutra, Daniel Ruschelpt_BR
dc.contributor.authorHo, Luis C.pt_BR
dc.contributor.authorThanjavur, Karunpt_BR
dc.contributor.authorFlohic, Helenept_BR
dc.contributor.authorAlonso-Herrero, Almudenapt_BR
dc.contributor.authorLira, Paulinapt_BR
dc.contributor.authorMcDermid, Richardpt_BR
dc.contributor.authorRiffel, Rogemar Andrépt_BR
dc.contributor.authorSchiavon, Ricardo P.pt_BR
dc.contributor.authorWinge, Claudiapt_BR
dc.contributor.authorHoenig, Michael D.pt_BR
dc.contributor.authorPerlman, Ericpt_BR
dc.date.accessioned2015-09-18T01:58:25Zpt_BR
dc.date.issued2015pt_BR
dc.identifier.issn0067-0049pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/126972pt_BR
dc.description.abstractWe present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, cover a wavelength range of approximately 0.85–2.5 μm at R ∼ 1300–1800. There is evidence that most of the galaxies host an active galactic nucleus (AGN), but the range of AGN luminosities (log (L2-10 keV [erg s−1]) = 37.0–43.2) in the sample means that the spectra display a wide variety of features. Some nuclei, especially the Seyferts, exhibit a rich emission-line spectrum. Other objects, in particular the type 2 Low Ionization Nuclear Emission Region galaxies, show just a few, weak emission lines, allowing a detailed view of the underlying stellar population. These spectra display numerous absorption features sensitive to the stellar initial mass function, as well as molecular bands arising in cool stars, and many other atomic absorption lines. We compare the spectra of subsets of galaxies known to be characterized by intermediate-age and old stellar populations, and find clear differences in their absorption lines and continuum shapes. We also examine the effect of atmospheric water vapor on the signal-to-noise ratio achieved in regions between the conventional NIR atmospheric windows, which are of potential interest to those planning observations of redshifted emission lines or other features affected by telluric H2O. Further exploitation of this data set is in progress, and the reduced spectra and data reduction tools are made available to the community.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe astrophysical journal. Supplement series. Chicago. Vol. 217, no. 1 (Mar.2015), 13, 27 p.pt_BR
dc.rightsOpen Accessen
dc.subjectGalaxies: activeen
dc.subjectNucleo galaticopt_BR
dc.subjectGalaxies: nucleien
dc.subjectGaláxias ativaspt_BR
dc.subjectDeslocamento para o vermelhopt_BR
dc.subjectGalaxies: seyferten
dc.subjectGalaxies: stellar contenten
dc.subjectInfrared: galaxiesen
dc.subjectSupporting material: extended figureen
dc.subjectFigure seten
dc.titleThe nuclear near-infrared spectral properties of nearby galaxiespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000973781pt_BR
dc.type.originEstrangeiropt_BR


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