Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sva....22..653d&link_type=abstract
(Astronomicheskii Zhurnal, vol. 55, Nov.-Dec. 1978, p. 1144-1156.) Soviet Astronomy, vol. 22, Nov.-Dec. 1978, p. 653-660. Trans
Astronomy and Astrophysics
Astronomy
14
Galactic Clusters, Galactic Evolution, Random Processes, Statistical Analysis, Adiabatic Conditions, Galactic Structure, Gravitational Effects, Perturbation Theory, Quasars, Spatial Distribution, Tensor Analysis
Scientific paper
Problems pertaining to the theory that galaxies and clusters of galaxies originated from random adiabatic inhomogeneities are considered. In this theory, the perturbations grow in accordance with the nonlinear gravitational-instability theory, dense flattened structures ('pancakes') begin to form about points corresponding to maxima of the largest principal value of a strain tensor, and the 'pancakes' develop into galaxies and clusters. It is shown that the parameters of an individual 'pancake', such as formation time, mass, and temperature, are determined by the largest principal value of the strain tensor at the center of the 'pancake'. The distribution function of the largest principal value is determined, along with some statistical properties of individual 'pancakes'. Possible relations between young galaxies and quasars are discussed from the viewpoint of this theory.
Doroshkevich Andrei G.
Shandarin Sergei F.
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