Browsing Exact and Earth Sciences by Author "Leitherer, Claus"

Now showing items 1-5 of 5

    • 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) [Journal article]
      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 ...

    • Dust and recent star formation in the core of ngc 5253 

      Calzetti, Daniela; Meurer, Gerhardt R.; Bohlin, Ralph C.; Garnett, Donald R.; Kinney, Anne Louise; Leitherer, Claus; Storchi-Bergmann, Thaisa (1997) [Journal article]
      Ultraviolet and optical narrow and broad band images of NGC 5253 obtained with the Hubble Space Te/escape Wide Field and Planetary Camera 2 are used to derive the properties of the dust distribution and the recent star ...

    • Stellar population gradients in Seyfert 2 galaxies : northern sample 

      Raimann, Daniel Iunes; Storchi-Bergmann, Thaisa; González Delgado, Rosa M.; Fernandes Junior, Roberto Cid; Heckman, Timothy M.; Leitherer, Claus; Schmitt, Henrique Roberto (2003) [Journal article]
      We use high signal-to-noise ratio long-slit spectra in the λλ3600–4700 range of the 20 brightest northern Seyfert 2 galaxies to study the variation of the stellar population properties as a function of distance from the ...

    • 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) [Journal article]
      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) [Journal article]
      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 ...