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Axisymmetric Dynamical Models of the Central Regions of Galaxies
Karl Gebhardt, Douglas Richstone, Scott Tremaine +12
We present axisymmetric, orbit superposition models for 12 galaxies using data taken with the Hubble Space Telescope (HST) and ground-based observatories. In each galaxy, we detect…
Galaxies with a Central Minimum in Stellar Luminosity Density
Tod R. Lauer, Karl Gebhardt, Douglas Richstone +15
We used HST WFPC2 images to identify six early-type galaxies with surface- brightness profiles that decrease inward over a limited range of radii near their centers. The implied lu…
The slope of the black-hole mass versus velocity dispersion correlation
Scott Tremaine, Karl Gebhardt, Ralf Bender +12
Observations of nearby galaxies reveal a strong correlation between the mass of the central dark object M and the velocity dispersion sigma of the host galaxy, of the form log(M/M_…