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Abstract: The surface-brightness profiles of galaxy disks fall into three main classes,based on whether they are simple exponentials Type I, bend down at largeradii Type II -truncations- or bend up at large radii Type III,-antitruncations-. Here, we discuss how the frequency of these differentprofiles depends on Hubble type, environment, and the presence or absence ofbars; these trends may herald important new tests for disk formation models.



Author: Peter Erwin, Michael Pohlen, Leonel Gutierrez, John E. Beckman

Source: https://arxiv.org/



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