Astrofísicas: Núcleos activos de galaxias

  • Publicación
    Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I - an 8 month campaign of monitoring NGC 5548 with IUE
    Emission-line and UV continuum observations of the type I Seyfert galaxy NGC 5548 were carried out for a period of 8 months with the IUE satellite. It was found...
  • Publicación
    Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. II - an intensive study of NGC 5548 at optical wavelengths
    A large, international program of ground-based optical spectroscopy and photometry of the variable Seyfert 1 galaxy NGC 5548 undertaken in support of an IUE...
  • Publicación
    Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IV - Intensity variations of the optical emission lines of NGC 5548
    Measurements of optical emission-line flux variations based on spectra of the Seyfert galaxy NGC 5548 obtained between December 1988 and October 1989 are...
  • Publicación
    Steps toward determination of the size and structure of the broad-line region in active galatic nuclei. 8: an intensive HST, IUE, and ground-based study of NGC 5548
    We present the data and initial results from a combined Hubble Space Telescope (HST)/IUE/ground-based spectroscopic monitoring campaign on the Seyfert 1 galaxy...
  • Noticia
    Telescopios de La Palma participan en el hallazgo de un joven blázar resultado de la fusión de dos galaxias
    Un equipo internacional de científicos ha obtenido la primera detección inequívoca de un chorro de material a altísima velocidad que emerge de una galaxia en...
  • Publicación
    Testing the anisotropy of the central engine from extended emission line regions
    Predictions about the angular behavior of the emission line spectrum from the ENLR for three plausible models of the nuclear engine are presented. Results are...
  • Publicación
    The Cavity of 3CR 196.1: Hα Emission Spatially Associated with an X-Ray Cavity
    We present a multifrequency analysis of the radio galaxy 3CR 196.1 (z=0.198), associated with the brightest galaxy of the cool-core cluster CIZAJ0815.4-0303...
  • Publicación
    The central parsecs of AGN across the electromagnetic spectrum
    High angular resolution observations across the electromagnetic spectrum of the nearest AGN are providing a view of the nuclear region rather different from-...
  • Publicación
    The circumstellar region of NGC 5728
    A 2D array of optical fibers generating simultaneous spectral and spatial information has been used to observe the central 13 arcsec of NGC 5728; on this basis...