Paper:	Asymmetric Galaxies: Nature or Nurture?
Volume:	421, Galaxies in Isolation: Exploring Nature Versus Nurture
Page:	149
Authors:	Wilcots, E. M.
Abstract:	Asymmetry is a common characteristic of many disk galaxies, but we have little understanding of its causes. In this contribution we look at the H I properties of a sample of Magellanic spirals, some of the most lopsided galaxies in the local Universe, and a sample of isolated spirals. In neither case do we see evidence of a link between the presence of a companion and asymmetry; indeed, asymmetry persists even in the absence of a companion or evidence of a recent interaction. These results suggest that once it arises, asymmetry may be a very long-lived characteristic of disk galaxies.

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