Publication type: Non-refereed

  • Publication
    The Morphological and Structural Classification of Planetary Nebulae
    We present a statistical analysis of a complete sample (255) of northern planetary nebulae (PNe). Our analysis is based on morphology as a main parameter. The...
  • Publication
    The morphology and masses of EROs in the Groth Strip
    We investigate the morphologies, masses and possible correlations between these two properties for 108 extremely red galaxies (EROs) found in the Groth strip...
  • Publication
    The Morphology of Satellites in External Galaxies
    Not Available
  • Publication
    The Most Luminous Stars in Our Galaxy
    We present quantitative analyses of 7 galactic O stars of spectral types from O3 to O6. By means of classical hydrostatic and planeparallel models we find the...
  • Publication
    The Most Metal-Poor Candidates in SDSS-I DR-5
    There are some 194,000 R = 2000 stellar spectra reported in the final public release of the Sloan Digital Sky Survey (SDSS-I), known as DR-5. Setting aside the...
  • Publication
    The Most Oxygen-Poor Planetary Nebula
    Not Available
  • Publication
    The Most Powerful Lenses in the Universe: Quasar Microlensing as a Probe of the Lensing Galaxy
    We describe how quasar microlensing is the only way to determine the dark/stellar ratio at the interesting sub-galactic scales of several kpc and how it is the...
  • Publication
    The motion of magnetic flux tubes in the convection zone and the subsurface origin of active regions
    The rise of kink-unstable magnetic flux tubes through the solar convection zone is discussed with a view to explaining the subsurface origin of active regions...
  • Publication
    The Motion of Magnetic Flux Tubes in the Convection Zone and the Subsurface Origin of Active Regions
    The rise of kink-unstable magnetic flux tubes through the solar convection zone is discussed with a view to explaining the subsurface origin of active regions...