Asymmetric Galaxies: Nature or Nurture?

Type Conference Paper
Names E. M. Wilcots, Lourdes Verdes-Montenegro, Ascencion del Olmo, Jack Sulentic
Proceedings Title ASP Conference Series
Conference Name Galaxies in Isolation: Exploring Nature Versus Nurture. Proceedings of a Conference held 12 to 15 May 2009 in Granada, Spain
Place San Francisco, CA
Publisher Astronomical Society of the Pacific
Volume 421
Pages 149
Series ASP Conference Series
Date October 1, 2010
Short Title Asymmetric Galaxies
Library Catalog NASA ADS
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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