The influence of the environment on bar formation

Details The influence of the environment on bar formation The influence of the environment on bar formation

2009-09-22

arxiv.org/abs/0909.4108v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

1 page, to appear in the ASP Conference Series Proceedings of "Galaxies in Isolation: Exploring Nature vs. Nurture", Granada,

Scientific paper

Galaxy mergers and interactions are mechanisms which could drive the formation of bars. Therefore, we could expect that the fraction of barred galaxies increases with the local density. Here we show the first results of an extensive search for barred galaxies in different environments. We conclude that the bar fraction on bright (L>L*) field, Virgo, and Coma cluster galaxies is compatible. These results point towards an scenario where the formation and/or evolution of bars depend mostly on internal galaxy processes rather than external ones.

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