Navegação Ciências Exatas e da Terra por Autor "Lopes, Ramiro Duarte Simões"

Resultados 1-3 de 3

    • Feeding versus feedback in NGC4151 probed with Gemini NIFS – I. Excitation 

      Storchi-Bergmann, Thaisa; McGregor, Peter J.; Riffel, Rogemar André; Lopes, Ramiro Duarte Simões; Beck, Tracy; Dopita, Michael A. (2009) [Artigo de periódico]
      We have used the Gemini Near-infrared Integral Field Spectrograph (NIFS) to map the emission-line intensity distributions and ratios in the narrow-line region (NLR) of the Seyfert galaxy NGC4151 in the Z, J, H and K bands ...

    • Feeding versus feedback in NGC4151 probed with Gemini NIFS – II. Kinematics 

      Storchi-Bergmann, Thaisa; Lopes, Ramiro Duarte Simões; McGregor, Peter J.; Riffel, Rogemar André; Beck, Tracy; Martini, Paul (2010) [Artigo de periódico]
      We have used the Gemini Near-infrared Integral Field Spectrograph (NIFS) to map the gas kinematics of the inner ~200 × 500 pc 2 of the Seyfert galaxy NGC4151 in the Z, J, H and K bands at a resolving power of ≥5000 and ...

    • A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies 

      Lopes, Ramiro Duarte Simões; Storchi-Bergmann, Thaisa; Saraiva, Maria de Fátima Oliveira; Martini, Paul (2007) [Artigo de periódico]
      We present a detailed investigation of the incidence of circumnuclear dust structure in a large, well-matched sample of early-type galaxies with and without active galactic nuclei (AGNs). All 34 early-type AGN hosts in our ...