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Galaxy Interactions in the Local Volume

Published online by Cambridge University Press:  25 May 2016

I.D. Karachentsev  and
D.I. Makarov
I.D. Karachentsev
Affiliation:
Special Astrophysical Obs., Russian Academy of Sciences, N. Arkhyz, Stavropolsky kraj, KChR, 357147, Russia
D.I. Makarov
Affiliation:
Special Astrophysical Obs., Russian Academy of Sciences, N. Arkhyz, Stavropolsky kraj, KChR, 357147, Russia

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Imaging of a large number of faint galaxies with the Hubble Space Telescope reveals a significant excess of interacting and peculiar objects among them (Griffiths et al., 1994, Burkey et al., 1994). Being expected in general, this result needs, however, to be expressed quantitatively. To estimate evolutionary changing of the relative number of interacting galaxies, δint(z), from their redshift z, one must determine reliably the local value, δint(0). But due to a subjective manner of definition of interacting galaxy system, the published values of δint(0) differ from one author to another several times. The most appropriate sample to estimate δint(0) would be quite a representative sample of very nearby galaxies, which is restricted by their distance or radial velocity. Below we consider data on such a fair sample, named the Local Volume (=LV), which is the most complete one at the present moment.

Type
Tidal Interactions
Information
Symposium - International Astronomical Union , Volume 186: Galaxy Interactions at High and Low Redshift , 1999 , pp. 109 - 116
Copyright
Copyright © Kluwer 1999 

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