• AGN–starburst connection in NGC 7582 : Gemini near-infrared spectrograph integral field unit observations 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Dors Júnior, Oli Luiz; Winge, Claudia (2009) [Artigo de periódico]
      We analyse two-dimensional near-infrared K-band spectra from the inner 660 × 315 pc² of the Seyfert galaxy NGC7582 obtained with the Gemini near-infrared spectrograph integral field unit at a spatial resolution of ≈50 pc ...
    • Differences between CO- and calcium triplet-derived velocity dispersions in spiral galaxies : evidence for central star formation? 

      Riffel, Rogemar André; Ho, Luis C.; Mason, Rachel E.; Rodriguez-Ardila, Alberto; Martins, Lucimara Pires; Riffel, Rogério; Díaz, Rubén Joaquín; Colina, Luis; Alonso-Herrero, Almudena; Flohic, Helene; Gonzalez Martin, Omaira; Lira, Paulina; McDermid, Richard; Ramos Almeida, Cristina; Schiavon, Ricardo P.; Thanjavur, Karun; Dutra, Daniel Ruschel; Winge, Claudia; Perlman, Eric (2015) [Artigo de periódico]
      We examine the stellar velocity dispersions (σ) of a sample of 48 galaxies, 35 of which are spirals, from the Palomar nearby galaxy survey. It is known that for ultra-luminous infrared galaxies (ULIRGs) and merger remnants, ...
    • Evolution of the accretion disc around the supermassive black hole of NGC 7213 

      Schimoia, Jáderson da Silva; Storchi-Bergmann, Thaisa; Winge, Claudia; Nemmen, Rodrigo S.; Eracleous, Michael (2017) [Artigo de periódico]
      We present observations of the double-peaked broad Hα profile emitted by the active nucleus of NGC7213 using the Gemini South Telescope in 13 epochs between 2011 September 27 and 2013 July 23. This is the first time that ...
    • Extended gas in Seyfert galaxies : near-infrared observations of 15 active nuclei 

      Winge, Claudia; Storchi-Bergmann, Thaisa; Ward, Martin John; Wilson, Andrew S. (2000) [Artigo de periódico]
      Results from an analysis of low-resolution …(R ~ 250)† near-infrared long-slit spectra covering simultaneously the I, J, H and K bands, for a sample of 15 Seyfert galaxies and the NGC5253 starburst nucleus, are presented. ...
    • Extended gas in Seyfert galaxies: near-infrared observations of NGC 2110 and Circinus 

      Storchi-Bergmann, Thaisa; Winge, Claudia; Ward, Martin John; Wilson, Andrew S. (1999) [Artigo de periódico]
      We present results of near-IR long-slit spectroscopy in the J and K bands of the Seyfert 2 galaxies NGC2110 and Circinus. Our goal is to investigate the gaseous distribution, excitation, reddening and kinematics, looking ...
    • Feeding versus feedback in AGN from near-infrared IFU observations : the case of Mrk 766 

      Schönell Júnior, Astor João; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2014) [Artigo de periódico]
      We have mapped the emission-line flux distributions and ratios as well as the gaseous kinematics of the inner 450 pc radius of the type 1 Seyfert galaxy Mrk 766 using integral field near-infrared J- and Kl-band spectra ...
    • Feeding versus feedback in AGN from near-infrared IFU observations XI : NGC 2110 

      Diniz, Marlon Rodrigo; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2015) [Artigo de periódico]
      We present a two-dimensional mapping of the gas flux distributions, as well as of the gas and stellar kinematics in the inner 220 pc of the Seyfert galaxy NGC 2110, using K-band integral field spectroscopy obtained with ...
    • Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2013) [Artigo de periódico]
      We have mapped the gaseous kinematics and the emission-line flux distributions and ratios from the inner≈680 pc radius of the Seyfert 1 galaxy Mrk 79, using two-dimensional (2D) nearinfrared J- and Kl-band spectra obtained ...
    • Gemini/GMOS IFU gas velocity 'tomography' of the narrow line region of nearby active galaxies 

      Barbosa, Fausto Kuhn Berenguer; Storchi-Bergmann, Thaisa; Fernandes Junior, Roberto Cid; Winge, Claudia; Schmitt, Henrique Roberto (2009) [Artigo de periódico]
      We present two-dimensional (2D) mapping of the gas velocity field of the inner few hundred parsecs of six nearby active galaxies, using spectra obtained with the integral field unit of the Gemini Multi-Object Spectrograph ...
    • Gemini/GMOS integral field unit stellar kinematics of the nuclear region of six nearby active galaxies 

      Barbosa, Fausto Kuhn Berenguer; Storchi-Bergmann, Thaisa; Fernandes Junior, Roberto Cid; Winge, Claudia; Schmitt, Henrique Roberto (2006) [Artigo de periódico]
      We present 2D mapping of the stellar velocity field within the inner 5 arcsec of six nearby active galaxies, using spectra obtained with the Integral Field Unit (IFU) of the Gemini Multi-Object Spectrograph instrument at ...
    • Gemini near-infrared integral field spectroscopy of the narrow-line region of ESO428-G14 : kinematics, escitation and the role of the radio jet 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia; Barbosa, Fausto Kuhn Berenguer (2006) [Artigo de periódico]
      We present two-dimensional (2D) gas kinematics and excitation of the inner 300 pc of the Seyfert galaxy ESO 428−G14 at a sampling of 14 pc², from near-infrared spectroscopic observations at R≈6000 obtained with the Integral ...
    • High spatial resolution of the mid-infrared emission of the Compton-thick type 2 Seyfert galaxy, Markarian 3 

      Sales, Dinalva Aires de; Dutra, Daniel Ruschel; Pastoriza, Miriani Griselda; Riffel, Rogério; Winge, Claudia (2014) [Artigo de periódico]
      The mid-infrared (MIR) spectra observed with Gemini/Michelle have been used to study the nuclear region of the Compton-thick type 2 Seyfert galaxy, Markarian 3 (Mrk 3), at a spatial resolution of ∼200 pc. No polycyclic ...
    • Hubble Space Telescope faint object camera spectroscopy of the narrow-line region of NGC 4151. I. Gas kinematics 

      Winge, Claudia; Axon, David J.; Macchetto, Ferdinando Duccio; Capetti, A.; Marconi, A. (1999) [Artigo de periódico]
      We present the results from a detailed kinematic analysis of both ground-based, and Hubble Space Telescope (HST )/Faint Object Camera long-slit spectroscopy at subarcsecond spatial resolution of the narrow-line region (NLR) ...
    • Interaction effects on galaxy pairs with Gemini/GMOS- I : electron density 

      Krabbe, Angela Cristina; Rosa, Deise Aparecida; Dors Júnior, Oli Luiz; Pastoriza, Miriani Griselda; Winge, Claudia; Hägelle, Guillermo Federico; Cardaci, Mónica V.; Rodrigues, Irapuan (2014) [Artigo de periódico]
      We present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400–7300 ...
    • Interaction effects on galaxy pairs with Gemini/GMOS- III : stellar population synthesis 

      Krabbe, Angela Cristina; Rosa, Deise Aparecida; Pastoriza, Miriani Griselda; Hägelle, Guillermo Federico; Cardaci, Mónica V.; Dors Júnior, Oli Luiz; Winge, Claudia (2017) [Artigo de periódico]
      We present an observational study of the impacts of interactions on the stellar population in a sample of galaxy pairs. Long-slit spectra in the wavelength range 3440–7300 Å obtained with the Gemini Multi-Object Spectrograph ...
    • Interaction effects on galaxy pairs with Gemini/GMOS – II oxygen abundance gradients 

      Rosa, Deise Aparecida; Dors Júnior, Oli Luiz; Krabbe, Angela Cristina; Hägelle, Guillermo Federico; Cardaci, Mónica V.; Pastoriza, Miriani Griselda; Rodrigues, Irapuan; Winge, Claudia (2014) [Artigo de periódico]
      In this paper, we derive oxygen abundance gradients from HII regions located in 11 galaxies in eight systems of close pairs. Long-slit spectra in the range 4400–7300 Å were obtained with the Gemini Multi-Object Spectrograph ...
    • Kinematics and physical properties of southern interacting galaxies : the minor merger AM 2306–721 

      Krabbe, Angela Cristina; Pastoriza, Miriani Griselda; Winge, Claudia; Rodrigues, Irapuan; Ferreiro, Diego L. (2008) [Artigo de periódico]
      We present an observational study about the effects of the interactions in the kinematics, stellar population and abundances of the components of the galaxy pair AM2306-721. Rotation curves for the main and companion ...
    • Long-slit spectrophotometry of the H II regions Gum 38a and Gum 38b 

      Girardi, Leo Alberto; Bica, Eduardo Luiz Damiani; Pastoriza, Miriani Griselda; Winge, Claudia (1997) [Artigo de periódico]
      We present new long-slit spectrophotometric observations in the range 3700-7200 Å of the H II regions Gum 38a and Gum 38b (RCW 57). We study the spatial distribution of reddenig ad excitation throughout the complex by means ...
    • Mapping of molecular gas inflow towards the Seyfert nucleus of NGC 4051 using Gemini NIFS 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia; McGregor, Peter J.; Beck, Tracy; Schmitt, Henrique Roberto (2008) [Artigo de periódico]
      We present 2D stellar and gaseous kinematics of the inner ~ 130×180 pc² of the Narrow-Line Seyfert 1 galaxy NGC4051 at a sampling of 4.5 pc, from near-infrared K-band spectroscopic observations obtained with the Gemini’s ...
    • A mid-IR comparative analysis of the Seyfert galaxies NGC 7213 and NGC 1386 

      Dutra, Daniel Ruschel; Pastoriza, Miriani Griselda; Riffel, Rogério; Sales, Dinalva Aires de; Winge, Claudia (2014) [Artigo de periódico]
      New Gemini mid-infrared spectroscopic observations together with Spitzer Space telescope archival data are used to study the properties of the dusty torus and circumnuclear star formation in the active galaxies NGC 7213 ...