Publication type: Non-refereed

  • Publication
    Density Bounded H II Regions: Ionization of the Diffuse Interstellar and Intergalactic Media
    We present a study of the diffuse ionized gas (DIG) for a sample of nearby spiral galaxies using Hα images, after constructing their H II region catalogues. The...
  • Publication
    Density Bounding in the H II Regions of Galactic Disks: Evidence and Consequences
    We present four lines of evidence leading to the conclusion that a notable fraction of the ionizing photon emission from the stars within H II regions in the...
  • Publication
    Density bounding in the HII regions of galactic discs: evidence and consequences
    We present four lines of evidence leading to the conclusion that the HII regions in the discs of normal galaxies,notably the highly luminous regions,are density...
  • Publication
    Density Dependence of Supernova Feedback Efficiency
    Not Available
  • Publication
    Density of Low-ionization Structures in PNe
    Not Available
  • Publication
    Density profiles of galaxy bulges and nuclei
    The bulge contribution to the inner density profile of a galaxy is well traced by the bulge's NIR surface brightness profile. We map the surface brightness...
  • Publication
    Density studies of giant extragalactic H II regions
    The variation of the electron density with position in a selected group of bright giant extragalactic H II regions has been studied using long slit...
  • Publication
    Density wave triggered star formation in grand design spirals
    In normal spiral galaxies the arms are the main sites for star formation. This is the cause of their optical contrast compared with the rest of the disc. The...
  • Publication
    Departures from axial symmetry, and starburst activity, in the bulge of NGC 4736
    Evidence for circumnuclear starbursts in spiral galaxies can take the form of a blue excess near the nucleus, but more frequently (because of dust extinction) H...