Astrofísicas: Cuásares

  • Publicación
    The near-IR properties and continuum shapes of high redshift quasars from the Sloan Digital Sky Survey
    We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of...
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    The optical and UV spectrum of the Seyfert type 2 galaxy NGC 3393
    The combined UV and optical spectrum of the Seyfert type 2 galaxy NGC 3393 is presented and analyzed together with published IR and IRAS data. The conditions in...
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    The optical variability of 3C 345
    The behavior of the light curve of 3C 345 is analyzed using all B magnitudes available in the literature, thus extending the number of points in the compiled...
  • Publicación
    The optical variability of 3C 345
    B-magnitudes have been compiled from the literature for 3C 345, covering a period from 1965 to 1980, 905 values in all. Since the last major study of the light...
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    The optical variability of 3C 345.
    The publication by Lloyd (1984) of new and revised data for a sample of active nuclei brought the number of published observations of 3C 345 up to over 900...
  • Publicación
    The OTELO survey. I. Description, data reduction, and multi-wavelength catalogue
    Context. The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The usefulness of these surveys is greatly...
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    The Peculiar Optical Spectrum of 4C+22.25: Imprint of a Massive Black Hole Binary?
    We report the discovery of peculiar features in the optical spectrum of 4C+22.25, a flat spectrum radio quasar at z = 0.4183 observed in the Sloan Digital Sky...
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    The photometric properties and stellar populations in extremely red galaxies
    We study the morphology and masses of extremely red galaxies (EROs) within the GOYA survey (Galaxy Origins and Young Assembly), by combining optical data (UBVI)...
  • Publicación
    The Properties of Quasar Hosts at the Peak of the Quasar Activity
    We present near-infrared imaging obtained with ESO VLT/ISAAC of a sample of 16 low luminosity radio-quiet quasars (RQQs) at the epoch around the peak of the...