Astrofísicas: Galaxias espirales

  • Publicación
    Scale-length determinations of exponential discs of spiral galaxies - A comparison
    In the present comparative study of published values for the scale lengths of spiral galaxies' exponential disks, the average value of the discrepancy for more...
  • Publicación
    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...
  • Publicación
    Self-sustaining galactic winds in spiral galaxies with starburst nuclei
    In the circumnuclear zones of the disks of some spirals there is an absence of neutral interstellar hydrogen. A model is devised in which gaseous outflow is...
  • Publicación
    Síntesis evolutiva de poblaciones estelares en galaxias espirales.
    Not Available
  • Publicación
    SN 1988A in M58 - A type II-P supernova with a high late-time luminosity
    SN 1988A is (with exception of the well-observed SN 1987A) the only type II SN for which observations of the late tail of the light curve are presently...
  • Publicación
    Spatial and luminosity distributions of the ionized hydrogen in NGC 3992
    From H-alpha CCD observations taken with the 4.2 m William Herschel Telescope a catalog of 394 HII regions of the spiral NGC 3992 has been compiled. The...
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    Spiral Galaxies: Requirements for accurate Photometric Bulge/Disk Decomposition
    Selected photometric bands, spatial resolution, disk dimension in the frame and the scanned sky background level are determined in order to establish galactic...
  • Publicación
    Spiral modes in galaxies.
    Via Fourier analysis, applied to broad-band images of a sample of spiral galaxies, the relative contribution of each spiral mode to the spiral arms, as a...
  • Charla
    Spirals and rings: how do they form? What are their structure and properties?
    I will propose a new theory to explain the formation and properties of rings and spirals in barred galaxies, focusing on a comparison of theoretical results to...