Trends for Outer Disk Profiles
The surface-brightness profiles of galaxy disks fall into three main classes, based on whether they are simple exponentials (Type I), bend down at large radii (Type II, `truncations') or bend up at large radii (Type III, `antitruncations'). Here, we discuss how the frequency of these different profiles depends on Hubble type, environment, and the
Erwin, P. et al.
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