Navegação Ciências Exatas e da Terra por Autor "Dutra, Daniel Ruschel"

Resultados 1-20 de 24

    • AGNIFS survey of local AGN : GMOS-IFU data and outflows in 30 sources 

      Dutra, Daniel Ruschel; Storchi-Bergmann, Thaisa; Müller, Allan Schnorr; Riffel, Rogemar André; Oliveira, Bruno Dall'Agnol de; Lena, Davide; Robinson, Andrew; Nagar, Neil M.; Elvis, Martin (2021) [Artigo de periódico]
      We analyse optical data cubes of the inner kiloparsec of 30 local (z ≤ 0.02) active galactic nucleus (AGN) hosts that our research group, AGNIFS, has collected over the past decade via observations with the integral field ...

    • Chemical abundances in Seyfert galaxies : V. The discovery of shocked emission outside the AGN ionization axis 

      Riffel, Rogemar André; Dors Júnior, Oli Luiz; Armah, Mark; Storchi-Bergmann, Thaisa; Feltre, Anna; Hägelle, Guillermo Federico; Cardaci, Mónica V.; Dutra, Daniel Ruschel; Krabbe, Angela Cristina; Pérez-Montero, Enrique; Zakamska, Nadia L.; Santos, Izabel Cristina Freitas dos (2021) [Artigo de periódico]
      We present maps for the electron temperature in the inner kpc of three luminous Seyfert galaxies: Mrk 79, Mrk 348, and Mrk 607 obtained from Gemini Multi-Object Spectrograph-integral field unit observations at spatial ...

    • 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, ...

    • Exploring the AGN-merger connection in Arp 245 : I: nuclear star formation and gas outflow in NGC 2992 

      Pereira, Muryel Guolo; Dutra, Daniel Ruschel; Storchi-Bergmann, Thaisa; Müller, Allan Schnorr; Fernandes, Roberto Cid; Couto, Guilherme dos Santos; Dametto, Natacha Zanon; Hernández Jiménez, José Andrés (2021) [Artigo de periódico]
      Galaxy mergers are central to our understanding of galaxy formation, especially within the context of hierarchical models. Besides having a large impact on the star formation history, mergers are also able to influence gas ...

    • Gauging the effect of supermassive black holes feedback on quasar host galaxies 

      Oliveira, Bruno Dall'Agnol de; Storchi-Bergmann, Thaisa; Kraemer, S. B.; Villar-Martín, Montse; Müller, Allan Schnorr; Schmitt, Henrique Roberto; Dutra, Daniel Ruschel; Crenshaw, Daniel Michael; Fischer, Travis C. (2021) [Artigo de periódico]
      In order to gauge the role that active galactic nuclei play in the evolution of galaxies via the effect of kinetic feedback in nearby QSO 2’s (z ∼ 0.3), we observed eight such objects with bolometric luminosities Lbol∼1046ergs−1 ...

    • Gemini NIFS survey of feeding and feedback in nearby active galaxies V. Molecular and ionized gas kinematics 

      Bianchin, Marina; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério; Dutra, Daniel Ruschel; Harrison, Chris; Hahn, Luis Gabriel Dahmer; Mainieri, Vincenzo; Schönell Júnior, Astor João; Dametto, Natacha Zanon (2022) [Artigo de periódico]
      We study the gas distribution and kinematics of the inner kpc of six moderately luminous (43.43 ≤ log Lbol ≤ 44.83) nearby (0.004 ≤ z ≤ 0.014) Seyfert galaxies observed with the Near-infrared Integral Field Spectrograph ...

    • 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 ...

    • A Gemini–NIFS view of the merger remnant NGC 34 

      Motter, Juliana Cristina; Riffel, Rogério; Ricci, Tiago Vecchi; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Dutra, Daniel Ruschel; Hahn, Luis Gabriel Dahmer; Dametto, Natacha Zanon; Diniz, Marlon Rodrigo (2021) [Artigo de periódico]
      The merger remnant NGC 34 is a local luminous infrared galaxy (LIRG) hosting a nuclear starburst and a hard X-ray source associated with a putative, obscured Seyfert 2 nucleus. In this work, we use adaptive optics assisted ...

    • 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 ...

    • Mapping the stellar population and gas excitation of MaNGA galaxies with MEGACUBES : results for AGN versus control sample 

      Riffel, Rogério; Mallmann, Nícolas Dullius; Rembold, Sandro Barboza; Ilha, Gabriele da Silva; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Dutra, Daniel Ruschel; Vazdekis, Alexandre; Martín-Navarro, Ignacio; Schimoia, Jáderson da Silva; Almeida, Cristina Ramos; Costa, Luiz N. da; Verde, Glauber Costa Vila; Gatto, Lara Maria (2023) [Artigo de periódico]
      We present spaxel-by-spaxel stellar population fits for the ∼10 000 MaNGA data cubes. We provide multiple extension fits files, nominated as MEGACUBES, with maps of several properties as well as emission-line profiles that ...

    • 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 ...

    • Near-infrared integrated spectra of Galactic globular clusters : testing simple stellar population models 

      Riffel, Rogério; Dutra, Daniel Ruschel; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Santos Junior, Joao Francisco Coelho dos; Bonatto, Charles Jose; Ducati, Jorge Ricardo (2011) [Artigo de periódico]
      We present SOAR/OSIRIS cross-dispersed near-infrared (NIR) integrated spectra of 12 Galactic globular clusters that are employed to test Maraston NIR evolutionary population synthesis models, and to provide spectral ...

    • A panchromatic spatially resolved study of the inner 500 pc of NGC 1052 : II. Gas excitation and kinematics 

      Hahn, Luis Gabriel Dahmer; Riffel, Rogério; Ricci, Tiago Vecchi; Steiner, João Evangelista; Storchi-Bergmann, Thaisa; Riffel, Rogemar André; Menezes, Roberto Bertoldo; Dametto, Natacha Zanon; Diniz, Marlon Rodrigo; Motter, Juliana Cristina; Dutra, Daniel Ruschel (2019) [Artigo de periódico]
      We map the optical and near-infrared (NIR) emission-line flux distributions and kinematics of the inner 320×535 pc2of the elliptical galaxy NGC 1052. The integral field spectra were obtained with the Gemini Telescope using ...

    • Probing the active galactic nucleus unified model torus properties in Seyfert galaxies 

      Audibert, Anelise; Riffel, Rogério; Sales, Dinalva Aires de; Pastoriza, Miriani Griselda; Dutra, Daniel Ruschel (2017) [Artigo de periódico]
      We studied the physical parameters of a sample comprising of all Spitzer/Infrared Spectrograph public spectra of Seyfert galaxies in the mid-infrared (5.2–38 μm range) under the active galactic nucleus (AGN) unified model. ...

    • Star formation in AGNs at the hundred parsec scale using MIR high-resolution images 

      Dutra, Daniel Ruschel; Rodríguez Espinosa, Jose Miguel; Gonzalez Martin, Omaira; Pastoriza, Miriani Griselda; Riffel, Rogério (2017) [Artigo de periódico]
      It has been well established in the past decades that the central black hole masses of galaxies correlate with dynamical properties of their harbouring bulges. This notion begs the question of whether there are causal ...

    • 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 complex, dusty narrow-line region of NGC 4388 : gas–jet interactions, outflows and extinction revealed by near-IR spectroscopy 

      Rodrigues-Ardila, Alberto; Mason, Rachel E.; Martins, Lucimara Pires; Ramos Almeida, Cristina; Riffel, Rogemar André; Riffel, Rogério; Lira, Paulina; Gonzalez Martin, Omaira; Dametto, Natacha Zanon; Flohic, Helene; Ho, Luis C.; Dutra, Daniel Ruschel; Thanjavur, Karun; Colina, Luis; McDermid, Richard; Perlman, Eric; Winge, Claudia (2017) [Artigo de periódico]
      We present Gemini/GNIRS (Gemini Near-Infrared Spectrograph) spectroscopy of the Seyfert 2 galaxy NGC 4388, with simultaneous coverage from 0.85 to 2.5 μm. Several spatially extended emission lines are detected for the first ...

    • The Eddington ratio-dependent ‘changing look’ events in NGC 2992 

      Pereira, Muryel Guolo; Dutra, Daniel Ruschel; Grupe, Dirk; Peterson, Bradley M.; Storchi-Bergmann, Thaisa; Schimoia, Jáderson da Silva; Nemmen, Rodrigo S.; Robinson, Andrew (2021) [Artigo de periódico]
      We present an analysis of historical multiwavelength emission of the `Changing Look’ (CL) Active Galactic Nucleu (AGN) in NGC 2992, covering epochs ranging from 1978 to 2021, as well as new X-ray and optical spectra. The ...