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HST's hunt for intermediate-mass black holes in star clusters
Julio Chanamé, Justice Bruursema, Rupali Chandar +3
Establishing or ruling out, either through solid mass measurements or upper limits, the presence of intermediate-mass black holes (IMBHs) at the centers of star clusters would prof…
Local Group Dwarf Elliptical Galaxies: II. Stellar Kinematics to Large Radii in NGC 147 and NGC 185
M. Geha, R. P. van der Marel, P. Guhathakurta +3
We present kinematic and metallicity profiles for the M31 dwarf elliptical (dE) satellite galaxies NGC 147 and NGC 185. The profiles represent the most extensive spectroscopic radi…
New Limits on an Intermediate Mass Black Hole in Omega Centauri: II. Dynamical Models
Roeland P. van der Marel, Jay Anderson
We present a detailed dynamical analysis of the projected density and kinematical data available for the globular cluster Omega Cen. We solve the spherical anisotropic Jeans equati…
New Limits on an Intermediate Mass Black Hole in Omega Centauri: I. Hubble Space Telescope Photometry and Proper Motions
Jay Anderson, Roeland P. van der Marel
We analyze data from the Hubble Space Telescope's Advanced Camera for Surveys of the globular cluster Omega Cen. We construct a photometric and proper-motion catalog using the GO-9…
Mass Segregation in NGC 2298: limits on the presence of an Intermediate Mass Black Hole
Mario Pasquato, Michele Trenti, Guido De Marchi +5
[abridged] Theoretical investigations have suggested the presence of Intermediate Mass Black Holes (IMBHs, with masses in the 100-10000 Msun range) in the cores of some Globular Cl…