Galaxy Interactions

Joshua E. Barnes

Institute for Astronomy, University of Hawai`i,
2680 Woodlawn Drive, Honolulu, Hawai`i 96822

An invited review presented at Galaxy Dynamics,
Rutgers University, New Jersey, August 8-12, 1998.


Interacting galaxies are a natural arena for studies of non-equilibrium stellar dynamics, gas dynamics, and thermodynamics. Only galaxy formation itself is as deeply concerned with as many different aspects of dynamics, and the connection between interactions and the formation of galaxies is probably no coincidence. This review discusses tidal interactions, halos and orbit decay, dissipative effects in galaxy interactions, properties of merger remnants, and origins of starbursts.


A gzipped postscript copy of this paper is available. The text will be published in Galaxy Dynamics (Astronomical Society of the Pacific: San Francisco).

Joshua E. Barnes (

Last modified: November 4, 1998