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No supermassive black hole in M33?
(Science, 2001-08-10)
We analyze optical long-slit spectroscopy of the nucleus of M33 obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Rather than the steep rise expected within the radius of influence ...
Supermassive black holes in active galactic nuclei. I. The Consistency of black hole masses in quiescent and active galaxies
(University of Chicago Press: Astrophysical Journal Letters, 2001-07-10)
We report the first results of a program to measure accurate stellar velocity dispersions in the bulges of the host galaxies of active galactic nuclei (AGNs) for which accurate black hole (BH) masses have been determined ...