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A Statistical Study of Merging Galaxies-Theory and Observations

Published online by Cambridge University Press:  12 April 2016

Tapan K. Chatterjee
Tapan K. Chatterjee*
Affiliation:
Facultad de Ciencias, Fisico-Matematicas Universidad A. Puebla, (A.P. 1152), Puebla, Mexico

Abstract

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A study of the expected frequency of merging galaxies is conducted, using the impulsive approximation. Results indicate that if we consider mergers involving galaxy pairs without halos in a single crossing time or orbital period, the expected frequency of mergers is two orders of magnitude below the observed value for the present epoch. If we consider mergers invovling several orbital periods or crossing times, the expected frequency goes up by an order of magnitude. Preliminary calculation indicate that if we consider galaxy mergers between pairs with massive halos, the merger is very much hastened.

Type
VII. Classical Theory of Pairs
Information
International Astronomical Union Colloquium , Volume 124: Paired and Interacting Galaxies , 1990 , pp. 519 - 535
Copyright
Copyright © NASA 1990

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