Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.166..193g&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 166, no. 2, April 1990, p. 193-204.
Astronomy and Astrophysics
Astrophysics
Disk Galaxies, Galactic Mass, Galactic Nuclei, Mass Transfer, Active Galaxies, Galactic Structure, Milky Way Galaxy, Seyfert Galaxies
Scientific paper
High-energy explosions in the nuclei of galaxies throw out large amount of gas with sufficiently large velocities. This high-velocity ejections of gas is observed in Seyfert galaxies and in many normal spiral galaxies. The ejected gas flows continuously in the outer region and builds the outer structure of the galaxy. The degree of influence of the outflowing gas on the outer structure depends on the energy released during the explosion and on the damping rate of flow. These two parameters may essentially determine the type of galaxy to be evolved to including the Hubble-type. The physical interpretation of some such observed phenomena has been achieved on the basis of the solution of gas dynamical equations with viscosity.
Basu Baidyanath
Bhattacharyya Tara
Ghosh Mita
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