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Browsing Publications of Astronomical Society of India by Subject "galaxies"

Browsing Publications of Astronomical Society of India by Subject "galaxies"

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  • Asymmetry in energy transfer in a collision of galaxies 
    Ahmed, Farooq; Alladin, S. M (Astronomical Society of India, 1981-03)
    The time dependence of binding and translational energies of a pair of galaxies during head-on collisions has been studied with impulsive approximation. The two galaxies are assumed to be identical with mass distribution ...
  • GMRT study of extremely faint dwarf irregular galaxies 
    Begum, A; Chengalur, J. N (Astronomical Society of India, 2004-09)
    We present results of deep, high velocity resolution (~1.6 km s-1) Giant Metrewave Radio Telescope (GMRT) HI 21 cm-line observations of a sample of extremely faint (MB > -12.5) dwarf irregular galaxies. unlike previous ...
  • Head-on collision of spherical galaxies 
    Namboodiri, P. M. S (Astronomical Society of India, 1995)
    N-body simulations of head-on collision of a pair of identical spherical galaxies have been performed with a set of initial conditions covering both merging and non-merging types of collisions. The merging of the galaxies ...
  • HI deficiency in groups: what can we learn from Eridanus ? 
    Omar, A (Astronomical Society of India, 2004-07)
    The HI content of the Eridanus group of galaxies is studied using the GMRT observations and the HIPASS data. A significant Hi deficiency up to a factor of 2 2 - 3 is observed in galaxies in the Eridanus group. The deficiency ...
  • The local supercluster of galaxies 
    de Vaucouleurs, G (Astronomical Society of India, 1981-03)
    The history of the discovery of the Local Supercluster or "Supergalaxy" is traced. Recent studies of its influence on the distribution and velocities of nearby galaxies are reviewed.
  • On gravitating stellar systems I. formulation using distribution function method 
    Pandey, U. S (Astronomical Society of India, 2004-09)
    An interesting work on self-gravitating gaseous disks has con- cerned the behaviour of the precursor of massive central dark object that might be the energy source existing at centers of galaxies and powering quasars. With ...
  • PKS1830-211: The strongest lensed radio source 
    Narasimha, D (Astronomical Society of India, 2004-09)
    The Ooty lens PKS1830-211 is a bright, variable radio source at a redshift of 2.507 consisting of a compact flat spectrum core, associated knot and jet, which are lensed by an intervening spiral galaxy at a redshift of ...
  • Spectral structure of X-shaped radio sources 
    Vir Lal, D; Pramesh Rao, A (Astronomical Society of India, 2004-09)
    Analysis of Giant Metrewave Radio Telescope low frequency data for an X-shaped source, 3C 223.1 has revealed an unusual result as discussed earlier by Lal & Rao (2004). The radio morphologies of it at 240 and 610 MHz show ...
  • Tidal disruption in colliding galaxies 
    Narasimhan, K. S. V. S; Alladin, S. M (Astronomical Society of India, 1982-09)
    Distruptive effects in colliding galaxies due to their mutual tidal interaction are compared under the impulsive approximation. If M1 and M2 are the masses and Rho1 and Rho2 the densities of the two galaxies, M2 suffers ...

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