Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-08-09
Astronomy and Astrophysics
Astrophysics
2 pages, no figures, submitted to ApJ Letters
Scientific paper
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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