Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.177..717w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 177, Dec. 1976, p. 717-733.
Astronomy and Astrophysics
Astronomy
214
Astronomical Models, Celestial Mechanics, Galactic Clusters, Galactic Evolution, Hubble Diagram, Equations Of Motion, Mass Distribution, Numerical Integration, Potential Energy, Spatial Distribution, Velocity Distribution, Virgo Galactic Cluster
Scientific paper
An integration of the equations of motion of a 700-body system is presented. It provides a dynamical model for the growth and evolution of clustering in a bound system of galaxies with a realistic mass spectrum. Assuming that galaxy formation occurs during the initial Hubble expansion of the system, it is found that clustering grows in an extremely inhomogeneous fashion by the continual formation and amalgamation of subcondensations. The early stages of the model may shed light on the formation of inhomogeneous clusters like Virgo, while the final state gives a good fit to the gross properties of the Coma cluster in spite of the strong mass segregation which is present. A dynamically consistent mass of 2.4 by 10 to the 15th power solar masses is derived for Coma.
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