The Outer Structure of Galactic Disks: Connections Between Bars, Disks, and Environments
Surface brightness profiles for early type (S0-Sb) disks exhibit three main classes (Type I, II, and III). Type II profiles are more common in barred galaxies, and most of the time appear to be related to the bar's outer Lindblad resonance. Roughly half of barred galaxies in the field have Type II profiles, but almost none in the Virgo cluster do
Erwin, P. et al.
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2008