Astrophysical: Infrared astronomy

  • Publication
    Optical seeing at La Palma Observatory. 2: Intensive site testing campaign at the Nordic Optical Telescope
    The results of an intensive site testing assessment campaign, held at the Observatorio del Roque de los Muchachos (ORM) (La Palma) during four nights on July...
  • Publication
    Optical spectroscopy and near-infrared mapping of S 106
    The bipolar outflow region S 106 is studied with optical spectroscopy and IR mapping techniques. The physical conditions in the ionized region, the density...
  • Document
    PARALAJES Infrared
    Most of the energy emitted by the Universe is infrared and, therefore, we cannot see it without special instruments. The IAC has been aware of this since its...
    Paralajes nº4 El Infrarrojo (PDF)
  • Publishing
    PARALAJES Infrared
    A major fraction of the energy emitted within the universe is in the infrared, but we cannot detect it except using instruments specially developed to do this...
  • Publication
    Physical Parameters of the Torus for the Type 2 Seyfert IC 5063 from Mid-IR and X-Ray Simultaneous Spectral Fitting
    In order to understand the diversity of classes observed in active galactic nuclei (AGNs), a geometrically and optically thick torus of gas and dust is required...
  • Publication
    Position-dependent infrared spectroscopy of M82 - 100,000 Orion nebulae?
    It is reported that 8-13-micron spectra have been obtained at several positions across the extended emission region of M82. No major differences among the...
  • Publication
    Pupil plane interferometry in the near infrared. I - Methodology of observation and first results
    We describe an experiment aimed at diffraction-limited imaging of astronomical sources in the 2-5/micron range. It is based on a rotation shearing...
  • Publication
    Selection in H-alpha prism surveys
    The authors analyze a set of optically faint emission-line galaxies discovered as strong Hα emitters in an objective prism survey (Wamsteker et al, 1985). This...
  • Publication
    Small grains in nebulae - The case of IC 418
    Near infrared maps of the planetary nebula IC 418 taken at 5 arc sec spatial resolution are presented. These show an extremely compact source structure at 1.65...