Navegação por Assunto "Infrared: galaxies"

Resultados 1-20 de 43

    • 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 ...

    • An embedded active nucleus in the OH megamaser galaxy IRAS16399-0937 

      Sales, Dinalva Aires de; Robinson, Andrew; Axon, David J.; Gallimore, Jack F.; Kharb, Preeti; Curran, R. L.; O'Dea, Christopher Peter; Baum, Stefi Alison; Elitzur, Moshe; Mittal, Rupal (2015) [Artigo de periódico]
      We present a multiwavelength study of the OH megamaser galaxy IRAS16399−0937, based on new Hubble Space Telescope (HST)/Advanced Camera for Surveys F814W and Hα+[N ii] images and archive data from HST, Two Micron All Sky ...

    • Circumnuclear star formation in Mrk 42 mapped with Gemini Near-infrared Integral Field Spectrograph 

      Hennig, Moiré Gonçalves; Riffel, Rogemar André; Dors Júnior, Oli Luiz; Riffel, Rogério; Storchi-Bergmann, Thaisa; Colina, Luis (2018) [Artigo de periódico]
      We present Gemini Near-infrared Integral Field Spectrograph (NIFS) observations of the inner 1.5 × 1.5 kpc2 of the narrow-line Seyfert 1 galaxy Mrk 42 at a spatial resolution of 60 pc and spectral resolution of 40 kms−1. ...

    • Compact molecular disc and ionized gas outflows within 350 pc of the active nucleus of Mrk 1066 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa (2011) [Artigo de periódico]
      We present stellar and gaseous kinematics of the inner ≈350-pc radius of the Seyfert galaxy Mrk 1066 derived from J and Kl bands data obtained with the Gemini’s Near-Infrared Integral Field Spectrograph (NIFS) at a spatial ...

    • A correlation between the stellar and [Fe II] velocity dispersions in active galaxies 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Dors Júnior, Oli Luiz; Fuchs, Jaciara Tamara; Diniz, Marlon Rodrigo; Schönell Júnior, Astor João; Hennig, Moiré Gonçalves; Brum, Carine (2013) [Artigo de periódico]
      We use near-infrared (near-IR) spectroscopic data from the inner few hundred parsecs of a sample of 47 active galaxies to investigate possible correlations between the stellar velocity dispersion (σ ), obtained from the ...

    • 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, ...

    • Disentangling the near-infrared continuum spectral components of the inner 500 pc of Mrk 573 : two-dimensional maps 

      Diniz, Marlon Rodrigo; Riffel, Rogemar André; Riffel, Rogério; Crenshaw, Daniel Michael; Storchi-Bergmann, Thaisa; Fischer, Travis C.; Schmitt, Henrique Roberto; Kraemer, S. B. (2017) [Artigo de periódico]
      We present a near-infrared (near-IR) study of the spectral components of the continuum in the inner 500×500 pc2 of the nearby Seyfert galaxy Mrk 573 using adaptive optics near-IR integral field spectroscopy with the ...

    • Dust obscuration in starburst galaxies from near-infrared spectroscopy 

      Calzetti, Daniela; Kinney, Anne Louise; Storchi-Bergmann, Thaisa (1996) [Artigo de periódico]
      We present new observations of the near-infrared hydrogen recombination lines Paβ and Bry in the central starburst regions of 13 galaxies. The near-infrared data are supplemented with data on the optical Balmer line emission ...

    • 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 ...

    • Extreme galactic wind and Wolf-Rayet features in infrared mergers and infrared quasi-stellar objects 

      Lipari, Sebastian; Terlevich, Roberto; Díaz, Rubén Joaquín; Taniguchi, Y.; Zheng, W.; Tsvetanov, Z.I.; Carranza, Gustavo Jose; Dottori, Horacio Alberto (2003) [Artigo de periódico]
      We report, as a part of a long-term study of infrared (IR) mergers and IR quasi-stellar objects (QSOs), detailed spectroscopic evidence for outflow (OF) and Wolf–Rayet (WR) features in the nearby mergers NGC4038/39 and ...

    • Feeding versus feedback in active galactic nuclei from near-infrared integral field spectroscopy – X. NGC 5929 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério (2015) [Artigo de periódico]
      We present near-infrared emission-line flux distributions, excitation and kinematics, as well as stellar kinematics, of the inner 520 × 520 pc2 of the Seyfert 2 galaxy NGC 5929. The observations were performed with Gemini’s ...

    • 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 ...

    • First detection of the 448 GHz H2O transition in space 

      Pereira-Santaella, Miguel; González-Alfonso, Eduardo; Usero, Antonio; Garcia-Burillo, Santiago; Martín-Pintado, Jesús M.; Colina, Luis; Alonso-Herrero, Almudena; Arribas, Santiago; Cazzoli, Sara; Rico Villas, Fernando; Rigopoulou, Dimitra; Storchi-Bergmann, Thaisa (2017) [Artigo de periódico]
      We present the first detection of the ortho-H2O 423􀀀330 transition at 448 GHz in space. We observed this transition in the local (z = 0:010) luminous infrared (IR) galaxy ESO 320-G030 (IRAS F11506-3851) using the Atacama ...

    • 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 ...

    • Gemini NIFS survey of feeding and feedback processes in nearby active galaxies : II. The sample and surface mass density profilesthe hidden monster and its outflow 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Davies, Richard I.; Bianchin, Marina; Diniz, Marlon Rodrigo; Schönell Júnior, Astor João; Burtscher, Leonard; Crenshaw, Daniel Michael; Fischer, Travis C.; Hahn, Luis Gabriel Dahmer; Dametto, Natacha Zanon; Rosario, David (2018) [Artigo de periódico]
      We present and characterize a sample of 20 nearby Seyfert galaxies selected for having BAT 14–195 keV luminosities LX ≥ 1041.5 erg s−1, redshift z ≤ 0.015, being accessible for observations with the Gemini Near-Infrared ...

    • Gemini NIFS survey of feeding and feedback processes in nearby active galaxies : I. Stellar kinematics 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Hahn, Luis Gabriel Dahmer; Diniz, Marlon Rodrigo; Schönell Júnior, Astor João; Dametto, Natacha Zanon (2017) [Artigo de periódico]
      We use the Gemini Near-Infrared Integral Field Spectrograph (NIFS) to map the stellar kinematics of the inner few hundred parsecs of a sample of 16 nearby Seyfert galaxies, at a spatial resolution of tens of parsecs and ...

    • Infrared emission in Seyfert 2 galaxies : reprocessed radiation from a dusty torus? 

      Storchi-Bergmann, Thaisa; Mulchaey, John Scott; Wilson, Andrew S. (1992) [Artigo de periódico]
      The nature of the infrared continuum in Seyfert 2 galaxies is not well understood. An attractive model is one in which dust grains near the nucleus are heated by optical and ultraviolet photons from a central source and ...

    • Intermediate-age stars as origin of the low-velocity dispersion nuclear ring in Mrk 1066 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Pastoriza, Miriani Griselda (2010) [Artigo de periódico]
      We report the first two-dimensional stellar population synthesis in the near-infrared of the nuclear region of an active galaxy, namely, Mrk 1066. We have used integral field spectroscopy with adaptative optics at the ...