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The Connection Between Jets, Accretion Disks, and Black Hole Mass in Blazars
Jian-Min Wang, Bin Luo, Luis C. Ho
The properties of relativistic radio jets are thought to be closely connected with the properties of accretion disks in active galactic nuclei. We explore this issue using a sample…
The Stellar Populations in the Central Parsecs of Galactic Bulges Central Stellar Populations
Marc Sarzi, Hans-Walter Rix, Joseph C. Shields +5
We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to have nebular emission i…
The Survey of Nearby Nuclei with STIS (SUNNS):Emission-Line Nuclei at Hubble Space Telescope Resolution
Joseph C. Shields, Hans-Walter Rix, Marc Sarzi +6
We present results from a program of optical spectroscopy for 23 nearby galaxy emission-line nuclei. This investigation takes advantage of the spatial resolution of the Hubble Spac…
Intermediate-mass Black Holes in Galactic Nuclei
J. E. Greene, L. C. Ho, A. J. Barth
We present the first homogeneous sample of intermediate-mass black hole candidates in active galactic nuclei. Starting with broad-line active nuclei from the Sloan Digital Sky Surv…
A Population of Massive Globular Clusters in NGC 5128
Paul Martini, Luis C. Ho
We present velocity dispersion measurements of 14 globular clusters in NGC 5128 (Centarus A) obtained with the MIKE echelle spectrograph on the 6.5m Magellan Clay telescope. These…
Black Hole Mass Determinations From Orbit Superposition Models are Reliable
Douglas Richstone, Karl Gebhardt, Monique Aller +13
We show that orbit-superposition dynamical models (Schwarzschild's method) provide reliable estimates of nuclear black hole masses and errors when constructed from adequate orbit l…