Astrofísicas: Galaxias espirales

  • Publicación
    Gas flow, population structure and starburst activity in the central zone of NGC 4736
    The Sb galaxy NGC 4736 has a well observed ring of bright HII regions just outside its bulge, at some 1.3 kpc from the nucleus, with an apparent expansion...
  • Publicación
    Global morphology and physical relations between the stars, gas and dust in the disc and arms of M100.
    We study star formation processes in the disc of the weakly barred grand design spiral galaxy M100 (NGC 4321) from a variety of images tracing recent massive...
  • Publicación
    Gradients of excitation in the nuclei of starburst galaxies
    The use of long-slit spectroscopy at high spectral and spatial resolution has made it possible to measure gradients of gaseous excitation and also velocity...
  • Publicación
    H II region statistics in spirals
    High-resolution maps of the spiral galaxies NGC 3992 and NGC 4321, obtained with the Taurus camera at the 4.2-m William Herschel Telescope are analyzed. The...
  • Publicación
    How a dust concentration mimics dynamical signatures around the nucleus of NGC 7331.
    Where the pheonomenon of wavelength-dependent kinematics has been observed in galaxies, it has been well modelled as a dust extinction effect. Therefore...
  • Publicación
    Impacts of Bar-driven Shear and Shocks on Star Formation
    Bars drive gas inflow. As the gas flows inward, shocks and shear occur along the bar dust lanes. Such shocks and shear can affect the star formation (SF) and...
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    Infrared properties of five spiral galaxies
    The radial profiles of five spiral galaxies (NGC 5194, NGC 3627, NGC 3351, NGC 5055, NGC 4736) in the J and K filters of the near infrared are presented. They...
  • Publicación
    Internal kinematics of the most luminous HII regions in M100
    We have used the TAURUS Fabry-Perot mapping spectrometer on the WHT to produce a complete kinematic map of the disc of M100 in H-alpha. Here we show how the...
  • Charla
    Ionization of the diffuse gas in galaxies: hot low-mass evolved stars at work
    We revisit the question of the ionization of the diffuse medium in late type galaxies, by studying NGC 891, the prototype of edge-on spiral galaxies. The most...