Journal: Astrophysical Journal

  • Publication
    Observation of fine structure in the cold phase of the local interstellar medium using K I absorption
    The K I 7699-A resonance absorption line was used to observe a group of 18 early-type stars within a 200-pc radius of the sun with a signal-to-noise ratio of 50...
  • Publication
    Observations of three BL Lacertae objects - Constraints on inhomogeneous relativistically beamed jet models
    Multifrequency observations are presented of three BL Lac objects, including the first UV measurements of 0912 + 297 and 1219 + 285. An eight day optical flare...
  • Publication
    On the application of iteration factors for temperature correction in stellar atmospheres
    The authors present an improved iterative method for deriving temperature corrections in stellar atmospheres. At each step of iteration, the procedure computes...
  • Publication
    On the chemodynamics of Wolf-Rayet ring nebulae - NGC 6888
    Results of a chemodynamical study of the W-R ring nebula NGC 6888 around the WN6 star WR 136 are presented; the observations combine high spatial and spectral...
  • Publication
    On the massive star-forming capacity of molecular clouds
    Assuming that photoionization is the self-limiting process for continued star formation, we estimate the maximum number of massive (OB) stars that can form...
  • Publication
    On the O/Fe versus Fe/H relationship and the progenitors of type I supernovae
    The new observational O/Fe versus Fe/H abundance relationship for halo stars is studied in terms of several models of chemical evolution for the solar...
  • Publication
    On the supersonic turbulence of NGC 604
    Two-dimensional high spatial resoultion Fabry-Perot observations with TAURUS 2 at the William Herschel Telescope in La Palma, over the inner central regions of...
  • Publication
    On the temperature and velocity through the photosphere of a sunspot penumbra
    We investigate the structure in depth of a sunspot penumbra by means of the inversion code of the radiative transfer equation proposed by Ruiz Cobo & del Toro...
  • 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...