Astrophysical: Infrared astronomy

  • Publication
    Near-infrared mapping of spiral galaxies. II - NGC 2403 - Spiral structure in the old disk population
    Near-infrared maps in the J, H, and K bands, have been obtained for the nearby flocculent spiral NGC 2403, with a linear resolution of 900 pc. Radially and...
  • Publication
    Near-infrared observations of GGD objects
    The authors present the results of a near-infrared survey of 13 areas containing 16 GGD objects. A total of 12 infrared sources have been detected in five of...
  • Publication
    Near-infrared scans of planetary nebulae
    In the present results from a program of near-IR scanning of planetary nebulae, the observed flux is in most cases dominated by free-free emission. In three of...
  • Publication
    New windows to the universe; Proceedings of the Eleventh IAU European Regional Astronomy Meeting, Universidad de La Laguna, Spain, July 3-8, 1989. Part III
    Topics discussed in this issue include active galaxies and cosmology, interstellar and intergalactic medium, and astronomical instrumentation. Papers are...
  • Publication
    NGC 985 - Extended ionized regions and the far-infrared luminosity of a ring-shaped Seyfert galaxy
    Narrow-band H-alpha images and long-slit spectroscopy of the Seyfert galaxy NGC 985 are presented. Large-scale extended ionized zones are seen to cover a...
  • Publication
    On the optical variability of the QSO PKS 2128-123
    Although the QSO PKS 2128 - 123 appears as highly variable in the I band, with Delta-I of up to 1.69 mag, it is a moderate amplitude variable object in the...
  • Publication
    Optical and infrared observations of the H II region S201
    Optical spectroscopy, H-alpha interferometry, and near-IR mapping and photometry of the bipolar H II region S201 are reported. The observations are used to...
  • Publication
    Optical photometry and polarimetry and infrared photometry of 3C 345 in outburst
    We present V-band CCD photometry, UBVRI photopolarimetry, and near simultaneous JHK photometry of 3C 345 during a renewed outburst in spring of 1992, which...
  • 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...