Trends for Outer Disk Profiles

Details Trends for Outer Disk Profiles Trends for Outer Disk Profiles

2007-12-10

arxiv.org/abs/0712.1473v1

Astronomy and Astrophysics

Astrophysics

LaTeX, 2 pages, 1 EPS figure, uses modified newpasp.sty (included). To appear in Formation and Evlution of Galaxy Disks, eds.

Scientific paper

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 presence or absence of bars; these trends may herald important new tests for disk formation models.

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