Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...194...33d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 194, no. 1-2, April 1988, p. 33-53.
Astronomy and Astrophysics
Astronomy
16
Accretion Disks, Astronomical Models, Compact Galaxies, Galactic Evolution, Galactic Nuclei, Black Holes (Astronomy), Dwarf Galaxies, Eddington Approximation, Elliptical Galaxies
Scientific paper
In a great variety of galaxies (active galaxies, our own galaxy, compact galaxies), central mass concentrations of at least 106M_sun; are observed. It is shown that one can expect central masses of this order to form out of an accretion disk that is situated in the originally soft potential of the galactic center. The mass of the disk becomes so large that it influences the potential in the very center, thus making accretion possible. In this, the first paper of the series, the theoretical description is introduced and the evolution of a standard model followed. The limitation of the physical and numerical approximations are also analyzed.
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