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The Black Hole Mass In M87 From Gemini/NIFS Adaptive Optics Observations
(2011-03)
We present the stellar kinematics in the central 2 '' of the luminous elliptical galaxy M87 (NGC 4486), using laser adaptive optics to feed the Gemini telescope integral-field spectrograph, Near-infrared Integral Field ...
The Black Hole Mass, Stellar Mass-To-Light Ratio, And Dark Halo In M87
(2009-08)
We model the dynamical structure of M87 (NGC4486) using high spatial resolution long-slit observations of stellar light in the central regions, two-dimensional stellar light kinematics out to half of the effective radius, ...
In Search Of The Largest Velocity Dispersion Galaxies
(2008-11)
We present Hobby-Eberly Telescope (HET) observations for galaxies at redshift z < 0:3 from the Sloan Digital Sky Survey (SDSS) showing large velocity dispersions while appearing to be single galaxies in HSTimages. The high ...
The Black Hole Mass In The Brightest Cluster Galaxy NGC 6086
(2011-02)
We present the first direct measurement of the central black hole mass, M-center dot, in NGC 6086, the Brightest Cluster Galaxy (BCG) in A2162. Our investigation demonstrates for the first time that stellar-dynamical ...
A Quintet Of Black Hole Mass Determinations
(2009-04)
We report five new measurements of central black hole masses based on Space Telescope Imaging Spectrograph and Wide Field Planetary Camera 2 observations with the Hubble Space Telescope (HST) and on axisymmetric, three-integral, ...
Dark Matter Scaling Relations And The Assembly Epoch Of Coma Early-Type Galaxies
(2009-01)
Axisymmetric, orbit-based dynamical models are used to derive dark matter scaling relations for Coma early-type galaxies. From faint to bright galaxies, halo core radii and asymptotic circular velocities increase. Compared ...
The Effect of Spatial Gradients in Stellar Mass-to-Light Ratio on Black Hole Mass Measurements
(2013-05)
We have tested the effect of spatial gradients in stellar mass-to-light ratio (gamma) on measurements of black hole masses (M-*) derived from stellar orbit superposition models. Such models construct a static gravitational ...
Hobby-Eberly Telescope Observations Of The Dark Halo In NGC 821
(2010-06)
We present stellar line-of-sight velocity distributions (LOSVDs) of elliptical galaxy NGC 821 obtained to approximately 100 '' (over two effective radii) with long-slit spectroscopy from the Hobby-Eberly Telescope. Our ...
The Black Hole Mass And Extreme Orbital Structure In NGC 1399
(2007-12)
The largest galaxies, and in particular central galaxies in clusters, offer unique insight into understanding the mechanism for the growth of nuclear black holes. We present Hubble Space Telescope kinematics for NGC 1399, ...
Angular Momenta, Dynamical Masses, And Mergers Of Brightest Cluster Galaxies
(2013-12)
Using the VIMOS integral field unit (IFU) spectrograph on the Very Large Telescope, we have spatially mapped the kinematic properties of 10 nearby brightest cluster galaxies (BCGs) and 4 BCG companion galaxies located ...