Navegação Ciências Exatas e da Terra por Autor "Pérez Jiménez, Enrique"

Resultados 1-7 de 7

    • An atlas of the circumnuclear regions of 75 Seyfert galaxies in the near-ultraviolet with the Hubble Space Telescope advanced camara for surveys 

      Muñoz Marín, Victor M.; González Delgado, Rosa M.; Schmitt, Henrique Roberto; Fernandes, Roberto Cid; Pérez Jiménez, Enrique; Storchi-Bergmann, Thaisa; Heckman, Timothy M.; Leitherer, Claus (2007) [Artigo de periódico]
      We present an atlas of the central regions of 75 Seyfert galaxies imaged in the near-UV with the Advanced Camera for Surveys of the Hubble Space Telescope at an average resolution of ~10 pc. These data complement archival ...

    • On the nature of the near-UV extended light in Seyfert galaxies 

      Muñoz Marín, Victor M.; Storchi-Bergmann, Thaisa; González Delgado, Rosa M.; Schmitt, Henrique Roberto; Spinelli, Patrícia Figueiro; Pérez Jiménez, Enrique; Fernandes Junior, Roberto Cid (2009) [Artigo de periódico]
      We study the nature of the extended near-UV emission in the inner kiloparsec of a sample of 15 Seyfert (Sy) galaxies which have both near-UV (F330W) and narrow-band [O III] highresolution Hubble images. For the majority ...

    • Spitzer space telescope measurements of dust reverberation lags in the Seyfert 1 galaxy NGC 6418 

      Vasquez, Billy; Galianni, Pasquale; Richmond, Michael; Robinson, Andrew; Axon, David J.; Horne, Keith; Almeyda, Triana; Fausnaugh, Michael; Peterson, Bradley M.; Bottorff, Mark; Gallimore, Jack F.; Elitzur, Moshe; Netzer, Hagai; Storchi-Bergmann, Thaisa; Marconi, A.; Capetti, A.; Batcheldor, Dan; Buchanan, Catherine; Stirpe, Giovanna M.; Kishimoto, Makoto; Packham, Christopher; Pérez Jiménez, Enrique; Tadhunter, Clive; Upton, John; Estrada-Carpenter, Vicente (2015) [Artigo de periódico]
      We present results from a 15 month campaign of high-cadence (∼3 days) mid-infrared Spitzer and optical (B and V) monitoring of the Seyfert 1 galaxy NGC 6418, with the objective of determining the characteristic size of the ...

    • Steps foward determination of the size and structure of the broad-line region in active galactic nuclei. V. Variability of the ultraviolet continuum and emission lines of NGC 3783 

      Reichert, G.A.; Rodriguez-Pascual, P.M.; Alloin, Danielle Marie; Clavel, J.; Crenshaw, Daniel Michael; Kriss, Gerard A.; Krolik, J.H.; Malkan, M.A.; Netzer, Hagai; Peterson, Bradley M.; Wamsteker, W.; Pastoriza, Miriani Griselda; Altamore, A.; Altieri, B.; Anderson, K.S.J.; Blackwell, J.H., Jr.; Boisson, Catherine; Brosch, N.; Carone, T.E.; Dietrich, Matthias; England, M.N.; Evans, I.N.; Filippenko, Alexei V.; Gaskell, C.M.; Good, M.; Gondhalekar, P.M.; Horne, Keith; Kazanas, D.; Kollatschny, W.; Koratkar, A.P.; Korista, Kirk T.; Macalpine, G.M.; Maoz, D.; Mazeh, Tsevi; Mccollum, B.; Miller, Hugh Richard; Oliveira, Carlos Roberto Mendes de; O'Brien, P.T.; Pelat, D.; Pérez Jiménez, Enrique; Perola, G.C.; Pogge, Richard William; Ptak, R.L.; Recondo-Gonzalez, M.C.; Rodríguez Espinosa, Jose Miguel; Rosenblat, E.I.; Asadun, A.C.; Santos-Lleo, M.; Shields, J.C.; Shrader, C.R.; Shull, John Michael; Simkin, S.M.; Sitko, M.L.; Snijders, M.A.J.; Sparke, L.S.; Stirpe, Giovanna M.; Stoner, R.E.; Storchi-Bergmann, Thaisa; Sun, W.-H.; Wang, T.; Welsh, W.F.; White, R.J.; Winge, Claudia; Zheng, W. (1994) [Artigo de periódico]
      We report on the results of intensive ultraviolet spectral monitoring of the Seyfert 1 galaxy NGC 3783. The nucleus of NGC 3783 was observed with the International Ultraviolet Explorer satellite on a regular basis for a ...

    • Surface photometry and spectral analysis of Mk50 : a Seyfert 1 nucleus in an early type galaxy 

      Pastoriza, Miriani Griselda; Bica, Eduardo Luiz Damiani; Bonatto, Charles Jose; Mediavilla, Evencio; Pérez Jiménez, Enrique (1991) [Artigo de periódico]
      We analyze Markarian 50 using V and I CCD frames and IPCS and CCD spectra, respectively, obtained in June 1985 (low state of activity) and May 1990 (high state), covering the range 3200 Å<λ<10 100 Å. The surface brightness ...

    • The stellar populations of low-luminosity active galactic nuclei. I. Ground-based observations 

      Fernandes, Roberto Cid; González Delgado, Rosa M.; Schmitt, Henrique Roberto; Storchi-Bergmann, Thaisa; Martins, Lucimara Pires; Pérez Jiménez, Enrique; Heckman, Timothy M.; Leitherer, Claus; Schaerer, Daniel (2004) [Artigo de periódico]
      We present a spectroscopic study of the stellar populations of low-luminosity active galactic nuclei (LLAGNs). Our main goal is to determine whether the stars that live in the innermost (100 pc scale) regions of these ...

    • The stellar populations of low-luminosity active galactic nuclei. II. Space telescope imaging spectrograph observations 

      González Delgado, Rosa M.; Fernandes, Roberto Cid; Storchi-Bergmann, Thaisa; Martins, Lucimara Pires; Pérez Jiménez, Enrique; Heckman, Timothy M.; Leitherer, Claus; Schaerer, Daniel (2004) [Artigo de periódico]
      We present a study of the stellar populations of low-luminosity active galactic nuclei (LLAGNs). Our goal is to search for spectroscopic signatures of young and intermediate-age stars and to investigate their relationship ...