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Dynamics of the globular cluster system associated with M87 (NGC 4486). II. Analysis
(Astrophysical Journal, 2001-10-01)
We present a dynamical analysis of the globular cluster system associated with M87 (= NGC 4486), the cD galaxy near the dynamical center of the Virgo cluster. The analysis utilizes a new spectroscopic and photometric ...
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 ...
Orbital structure of triaxial black-hole nuclei
(Astrophysical Journal, 2001-03-01)
Orbital motion in triaxial nuclei with central point masses, representing supermassive black holes, is investigated. The stellar density is assumed to
follow a power law, / r−γ, with = 1 or = 2. At low energies the ...
Relationship of black holes to bulges
(University of Chicago Press: Astronomical Society of the Pacific, 2001-01)
Supermassive black holes appear to be uniquely associated with galactic bulges. The mean ratio of black hole mass to bulge mass was until recently very uncertain, with ground-based, stellar kinematical data giving a value ...
Black hole demographics from the M•[BH] − σ[sigma] relation
(Monthly Notices of the Royal Astronomical Society, 2001-01)
We analyze a sample of 32 galaxies for which a dynamical estimate of the mass of the hot stellar component, Mbulge, is available. For each of these galaxies, we calculate the mass of the central black hole, M•, using the ...