Astrophysical: Galaxies

  • Publication
    Azimuthal dependence of the density distribution in outer galactic discs accreting intergalactic flows
    Aims: The amplitude and scaleheight of the Galactic gas disc density are not axisymmetric against expectations in a self-gravity axisymmetric disc. However...
  • Publication
    B-type supergiants in the Small Magellanic Cloud: rotational velocities and implications for evolutionary models
    High-resolution spectra for 24 SMC and Galactic B-type supergiants have been analysed to estimate the contributions of both macroturbulence and rotation to the...
  • Publication
    B-type supergiants in the SMC: Chemical compositions and comparison of static and unified models
    High-resolution UCLES/AAT spectra are presented for nine B-type supergiants in the SMC, chosen on the basis that they may show varying amounts of nuclear...
  • Publication
    B1359+154: A Six-Image Lens Produced by a z ~= 1 Compact Group of Galaxies
    Hubble Space Telescope (HST) V- and I-band observations show that the gravitational lens B1359+154 consists of six images of a single zs=3.235 radio source and...
  • Publication
    Balmer lines emission region in NGC 3516: Kinematical and physical properties
    We have studied the Balmer line shapes of NGC 3516 in order to find the structure of central Emission Line Region (ELR) and the physical parameters of the...
  • Publication
    Bar Evolution over the Last 8 Billion Years: A Constant Fraction of Strong Bars in the GEMS Survey
    One-third of present-day spirals host optically visible strong bars that drive their dynamical evolution. However, the fundamental question of how bars evolve...
  • Publication
    Bar pattern speed and position of the circumnuclear ring in NGC 1097
    We present the first galactic-scale model of the gas dynamics of the prototype barred Seyfert 1 galaxy NGC 1097. We use large-scale FaNTOmM Fabry-Perot...
  • Publication
    Bar pattern speed at z∼1-2 to explore challenges of the Standard Cosmology
    Stellar bars drive the galaxy secular evolution. While rotating around the galaxy centre with a given angular frequency, the bar pattern speed, they sweep...
  • Publication
    Bar pattern speed evolution over the last 7 Gyr
    Context. The tumbling pattern of a bar is the main parameter characterising its dynamics. From numerical simulations, its evolution since bar formation is...