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Rapid Calculation of Equatorial Rotation Curves

C. S. Kochanek

astro-pharXiv:astro-ph/0108162

Abstract

We derive a simple, fast one-dimensional integral for the equatorial rotation curve of a thin disk with surface density Sigma(R) modeled as a spheroid with axis ratio q. The result is simpler than standard expressions even in the limit of an infinitely thin disk (q-->0).

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