Paper:	Binary Galaxy Spin Correlations in Small Galaxy Groups
Volume:	209, Small Galaxy Groups, IAU Colloquium 174
Page:	296
Authors:	Wirén, S.; Valtonen, M. J.; Liu, B.
Abstract:	Statistics of spin orientations in binary galaxies may be used as a tool to study the formation process of galaxies. Helou (1984) found that the spins of spiral galaxies in binary systems are anticorrelated, and he suggested that it may have to do with the inclination dependence of the galaxy merger process. We study this dependence in small groups of galaxies. An N-body code is developed which uses an inclination dependent dynamical friction law to affect mergers of galaxies. It is found that some correlation results in this way in groups, which have initially random spin orientations.

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