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Binary Galaxy Spin Correlations in Small Galaxy Groups

Published online by Cambridge University Press:  12 April 2016

S. Wirén ,
M. J. Valtonen  and
B. Liu
S. Wirén
Affiliation:
Tuorla Observatory, University of Turku, FIN-21500 Piikkiö, Finland
M. J. Valtonen
Affiliation:
Tuorla Observatory, University of Turku, FIN-21500 Piikkiö, Finland
B. Liu
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing, China

Abstract

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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.

Type
Part 3. Numerical Simulations
Information
International Astronomical Union Colloquium , Volume 174: Small Galaxy Groups , 2000 , pp. 296 - 298
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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