Navegação Ciências Exatas e da Terra por Autor "Rosario, David"

Resultados 1-13 de 13

    • Constraints on the broad-line region properties and extinction in local Seyferts 

      Müller, Allan Schnorr; Davies, Richard I.; Korista, Kirk T.; Burtscher, Leonard; Rosario, David; Storchi-Bergmann, Thaisa; Contursi, Alessandra; Genzel, Reinhard; Gracia-Carpio, Javier; Hicks, Erin K. S.; Janssen, Annemieke; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Riffel, Rogério; Riffel, Rogemar André; Schartmann, Marc; Sternberg, Amiel; Sturm, Eckhard; Tacconi, Linda J.; Veilleux, Sylvain; Ulrich, Otho Adam (2016) [Artigo de periódico]
      We use high-spectral resolution (R>8000) data covering 3800–13 000 Å to study the physical conditions of the broad-line region (BLR) of nine nearby Seyfert 1 galaxies. Up to six broad HI lines are present in each spectrum. ...

    • 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 : VI. Stellar populations 

      Riffel, Rogério; Hahn, Luis Gabriel Dahmer; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Dametto, Natacha Zanon; Davies, Richard I.; Burtscher, Leonard; Bianchin, Marina; Dutra, Daniel Ruschel; Ricci, Claudio; Rosario, David (2022) [Artigo de periódico]
      We use Gemini Near-Infrared Integral Field Spectrograph (NIFS) adaptive optics assisted data cubes to map the stellar population of the inner few hundred parsec of a sample of 18 nearby Seyfert galaxies. The near-infrared ...

    • Insights on the dusty torus and neutral torus from optical and X-ray obscuration in a complete volume limited hard X-ray AGN sample 

      Davies, Richard I.; Burtscher, Leonard; Rosario, David; Storchi-Bergmann, Thaisa; Contursi, Alessandra; Genzel, Reinhard; Gracia-Carpio, Javier; Hicks, Erin K. S.; Janssen, Annemieke; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Ricci, Claudio; Riffel, Rogério; Riffel, Rogemar André; Schartmann, Marc; Müller, Allan Schnorr; Sternberg, Amiel; Sturm, Eckhard; Tacconi, Linda J.; Veilleux, Sylvain (2015) [Artigo de periódico]
      We describe a complete volume limited sample of nearby active galaxies selected by their 14–195 keV luminosity, and outline its rationale for studying the mechanisms regulating gas inflow and outflow. We also describe a ...

    • Ionized outflows in local luminous AGN : what are the real densities and outflow rates? 

      Davies, Richard I.; Baron, Dalya; Shimizu, Taro; Netzer, Hagai; Burtscher, Leonard; De Zeeuw, P. Tim; Genzel, Reinhard; Hicks, Erin K. S.; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Ricci, Claudio; Riffel, Rogério; Riffel, Rogemar André; Rosario, David; Schartmann, Marc; Müller, Allan Schnorr; Shangguan, J.; Sternberg, Amiel; Sturm, Eckhard; Storchi-Bergmann, Thaisa; Tacconi, Linda J.; Veilleux, Sylvain (2020) [Artigo de periódico]
      We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active galaxies. We show that the peak of the integrated ...

    • LLAMA : normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies 

      Rosario, David; Riffel, Rogério; Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Veilleux, Sylvain (2018) [Artigo de periódico]
      Using new Atacama Pathfinder Experiment and James Clerk Maxwell Telescope spectroscopy of the CO 2→1 line, we undertake a controlled study of cold molecular gas in moderately luminous (Lbol = 1043–44.5 erg s−1) active ...

    • LLAMA : stellar populations in the nuclei of ultra-hard X-ray-selected AGN and matched inactive galaxies 

      Burtscher, Leonard; Davies, Richard I.; Shimizu, Taro; Riffel, Rogério; Rosario, David; Hicks, Erin K. S.; Lin, Ming-Yi; Riffel, Rogemar André; Schartmann, Marc; Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Xivry, Gilles Orban de; Veilleux, Sylvain (2021) [Artigo de periódico]
      The relation between nuclear (.50 pc) star formation and nuclear galactic activity is still elusive; theoretical models predict a link between the two, but it is unclear whether active galactic nuclei (AGNs) should appear ...

    • LLAMA : the MBH–σ⋆ relation of the most luminous local AGNs 

      Caglar, Turgay; Burtscher, Leonard; Brandl, Bernhard; Brinchmann, Jarle; Davies, Richard I.; Hicks, Erin K. S.; Koss, Michael; Lin, Ming-Yi; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Riffel, Rogemar André; Riffel, Rogério; Rosario, David; Schartmann, Marc; Müller, Allan Schnorr; Shimizu, Taro; Storchi-Bergmann, Thaisa; Veilleux, Sylvain; Xivry, Gilles Orban de; Bennert, Vardha N. (2020) [Artigo de periódico]
      Context. The MBH–σ⋆ relation is considered a result of coevolution between the host galaxies and their supermassive black holes. For elliptical bulge hosting inactive galaxies, this relation is well established, but there ...

    • SDSS IV MaNGA : metallicity and ionisation parameter in local star-forming galaxies from Bayesian fitting to photoionisation models 

      Mingozzi, Matilde; Belfiore, Francesco; Cresci, Giovanni; Bundy, Kevin; Bershady, Matthew A.; Bizyaev, D.; Blanc, Guillermo A.; Boquien, Médéric; Drory, Niv; Fu, Hai; Maiolino, Roberto; Riffel, Rogério; Rosario, David; Schaefer, Adam L.; Storchi-Bergmann, Thaisa; Telles, Jose Eduardo; Tremonti, Christy A.; Zakamska, Nadia L.; Zhang, Kai (2020) [Artigo de periódico]
      We measured gas-phase metallicity, ionisation parameter, and dust extinction for a representative sample of 1795 local star-forming galaxies using integral field spectroscopy from the SDSS-IV MaNGA survey. We self-consistently ...

    • Stellar populations in local AGNs : evidence for enhanced star formation in the inner 100 pc 

      Hahn, Luis Gabriel Dahmer; Riffel, Rogério; Rodriguez-Ardila, Alberto; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Oliveira, Murilo Marinello Assis de; Davies, Richard I.; Burtscher, Leonard; Dutra, Daniel Ruschel; Rosario, David (2022) [Artigo de periódico]
      In modern models and simulations of galactic evolution, the star formation in massive galaxies is regulated by an ad hoc active galactic nuclei (AGN) feedback process. However, the physics and the extension of such effects ...

    • The AGNIFS survey : distribution and excitation of the hot molecular and ionized gas in the inner kpc of nearby AGN hosts 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Bianchin, Marina; Zakamska, Nadia L.; Dutra, Daniel Ruschel; Schönell Júnior, Astor João; Rosario, David; Rodriguez-Ardila, Alberto; Fischer, Travis C.; Davies, Richard I.; Dametto, Natacha Zanon; Hahn, Luis Gabriel Dahmer; Crenshaw, Daniel Michael; Burtscher, Leonard; Bentz, Misty Cherie (2021) [Artigo de periódico]
      We use the Gemini NIFS instrument to map the H22.1218μm and Brγ flux distributions in the inner 0.04–2 kpc of a sample of 36 nearby active galaxies (0.001 ≲ z ≲ 0.056) at spatial resolutions from 4 to 250 pc. We find ...

    • The AGNIFS survey : spatially resolved observations of hot molecular and ionized outflows in nearby active galaxies 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Bianchin, Marina; Zakamska, Nadia L.; Dutra, Daniel Ruschel; Bentz, Misty Cherie; Burtscher, Leonard; Crenshaw, Daniel Michael; Hahn, Luis Gabriel Dahmer; Dametto, Natacha Zanon; Davies, Richard I.; Diniz, Marlon Rodrigo; Fischer, Travis C.; Harrison, Chris; Mainieri, Vincenzo; Revalski, Mitchell; Rodriguez-Ardila, Alberto; Rosario, David; Schönell Júnior, Astor João (2023) [Artigo de periódico]
      We present the hot molecular and warm ionized gas kinematics for 33 nearby (0.001 ≲ z ≲ 0.056) X-ray selected active galaxies using the H22.1218μ m and Br γ emission lines observed in the K band with the Gemini near-infrared ...

    • The role of host galaxy for the environmental dependence of active nuclei in local galaxies 

      Davies, Richard I.; Hicks, Erin K. S.; Erwin, Peter; Burtscher, Leonard; Contursi, Alessandra; Genzel, Reinhard; Janssen, Annemieke; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Ricci, Claudio; Riffel, Rogério; Riffel, Rogemar André; Rosario, David; Schartmann, Marc; Müller, Allan Schnorr; Shimizu, Taro; Sternberg, Amiel; Sturm, Eckhard; Storchi-Bergmann, Thaisa; Tacconi, Linda J.; Veilleux, Sylvain (2017) [Artigo de periódico]
      We discuss the environment of local hard X-ray selected active galaxies, with reference to two independent group catalogues. We find that the fraction of these AGN in S0 host galaxies decreases strongly as a function of ...