Navegação Ciências Exatas e da Terra por Autor "Couto, Guilherme dos Santos"

Resultados 1-10 de 10

    • Determining star formation rates in active galactic nuclei hosts via stellar population synthesis 

      Riffel, Rogério; Mallmann, Nícolas Dullius; Ilha, Gabriele da Silva; Storchi-Bergmann, Thaisa; Riffel, Rogemar André; Rembold, Sandro Barboza; Bizyaev, D.; Nascimento, Janaina Correa do; Schimoia, Jáderson da Silva; Costa, Luiz N. da; Boardman, Nicholas Fraser; Boquien, Médéric; Couto, Guilherme dos Santos (2021) [Artigo de periódico]
      The effect of active galactic nuclei (AGNs) feedback on the host galaxy, and its role in quenching or enhancing star formation, is still uncertain due to the fact that usual star formation rate (SFR) indicators – emission-line ...

    • 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 ...

    • Feeding and feedback in the inner kiloparsec of the active galaxy NGC 2110 

      Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Nagar, Neil M.; Robinson, Andrew; Lena, Davide; Riffel, Rogemar André; Couto, Guilherme dos Santos (2014) [Artigo de periódico]
      We present two-dimensional gaseous kinematics of the inner 1.1 × 1.6 kpc² of the Seyfert 2 galaxy NGC 2110, from optical spectra (5600–7000 Å) obtained with the GeminiMulti Object Spectrograph integral field spectrograph ...

    • Gas rotation, shocks and outflow within the inner 3 kpc of the radio galaxy 3C 33 

      Couto, Guilherme dos Santos; Storchi-Bergmann, Thaisa; Müller, Allan Schnorr (2017) [Artigo de periódico]
      We present optical integral field spectroscopy – obtained with the Gemini Multi-Object Spectrograph – of the inner 4.0 × 5.8 kpc2 of the narrow line radio galaxy 3C 33 at a spatial resolution of 0.58 kpc. The gas emission ...

    • Integral field spectroscopy of the circum-nuclear region of the radio Galaxy Pictor A 

      Couto, Guilherme dos Santos; Storchi-Bergmann, Thaisa; Robinson, Andrew; Riffel, Rogemar André; Kharb, Preeti; Lena, Davide; Müller, Allan Schnorr (2016) [Artigo de periódico]
      We present optical integral field spectroscopy of the inner 2.5 × 3.4 kpc2 of the broad-line radio galaxy Pictor A, at a spatial resolution of ≈400 pc. Line emission is observed over the whole field of view, being strongest ...

    • Ionized gas kinematics within the inner kiloparsec of the Seyfert galaxy NGC 1365 

      Lena, Davide; Robinson, Andrew; Storchi-Bergmann, Thaisa; Couto, Guilherme dos Santos; Müller, Allan Schnorr; Riffel, Rogemar André (2016) [Artigo de periódico]
      We observed the nuclear region of the galaxy NGC 1365 with the integral field unit of the Gemini Multi Object Spectrograph mounted on the GEMINI-South telescope. The field of view covers 13 × 6 arcsec2(1173 × 541 pc2) ...

    • K band SINFONI spectra of two z ~ 5 submillimeter galaxy systems : upper limits to the unobscured star formation from [O II] optical emission line searches 

      Couto, Guilherme dos Santos; Colina, Luis; Piqueras López, Javier; Storchi-Bergmann, Thaisa; Arribas, Santiago (2016) [Artigo de periódico]
      We present deep SINFONI K-band integral field spectra of two submillimeter galaxy systems (SMG): BR 1202-0725 and J1000+0234, at z = 4:69 and 4:55; respectively. Spectra extracted for each object in the two systems do not ...

    • Powerful ionized gas outflows in the interacting radio galaxy 4C+29.30 

      Couto, Guilherme dos Santos; Storchi-Bergmann, Thaisa; Siemiginowska, Aneta L.; Riffel, Rogemar André; Morganti, Raffaellla H. (2020) [Artigo de periódico]
      We investigate the ionized gas excitation and kinematics in the inner 4.3 × 6.2 kpc2 of the merger radio galaxy 4C+29.30. Using optical integral field spectroscopy with the Gemini North Telescope, we present flux distributions, ...

    • The complex gas kinematics in the nucleus of the Seyfert 2 galaxy NGC 1386 : rotation, outflows, and inflows 

      Lena, Davide; Robinson, Andrew; Storchi-Bergmann, Thaisa; Müller, Allan Schnorr; Seelig, T.; Riffel, Rogemar André; Nagar, Neil M.; Couto, Guilherme dos Santos; Shadler, l (2015) [Artigo de periódico]
      We present optical integral field spectroscopy of the circum-nuclear gas of the Seyfert 2 galaxy NGC 1386. The data cover the central 7″ × 9″ (530 × 680 pc) at a spatial resolution of 0″. 9 (68 pc), and the spectral range ...

    • The interplay between radio AGN activity and their host galaxies 

      Couto, Guilherme dos Santos; Storchi-Bergmann, Thaisa (2023) [Artigo de periódico]
      Radio activity in AGN (Active Galactic Nuclei) produce feedback on the host galaxy via the impact of the relativistic jets on the circumnuclear gas. Although radio jets can reach up to several times the optical radius of ...