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Paper: Martin Schwarzschild's Contributions to Galaxy Dynamics
Volume: 182, Galaxy Dynamics: A Rutgers Symposium
Page: 3
Authors: Merritt, David
Abstract: Nuclear disks of neutral and ionized gas are common in early-type galaxies. We review their morphological and kinematical characteristics. In many cases they show near-Keplerian rotation curves which allow good estimates of the central black hole masses. They also present a number of puzzles with respect to their origin and stability.
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