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Weak lensing measurements of dark matter halos of galaxies from COMBO-17
M. Kleinheinrich, P. Schneider, H. -W. Rix +8
We present a measurement of mass estimates for dark matter halos around galaxies from the COMBO-17 survey using weak gravitational lensing. COMBO-17 is particularly useful for this…
The Nuclei of Late-type Spiral Galaxies
T. Boeker, C. -J. Walcher, H. -W. Rix +8
We summarize some recent results from our observational campaign to study the central regions of spiral galaxies of late Hubble type (Scd - Sm). These disk-dominated, bulgeless gal…
Galaxy-galaxy lensing results from COMBO-17
Martina Kleinheinrich, Peter Schneider, Thomas Erben +4
We use galaxy-galaxy lensing to study the statistical properties of the dark matter halos of galaxies. Our data is taken from the COMBO-17 survey which has imaged 1 square degree i…
The Extended Tidal Tails of Palomar 5: Tracers of the Galactic Potential
Michael Odenkirchen, Eva K. Grebel, Hans-Walter Rix +4
We detected extended, curved stellar tidal tails emanating from the sparse, disrupting halo globular cluster Pal 5, which cover 10 degrees on the sky. These streams allow us to inf…
Measuring Black Hole Masses Using Ionized Gas Kinematics
Aaron J. Barth, Marc Sarzi, Luis C. Ho +5
We describe techniques for measuring the central masses of galaxies using emission-line kinematics observed with the Hubble Space Telescope. For accurate results, it is necessary t…
Supermassive Black Holes from the SUNNS survey
Marc Sarzi, Hans-Walter Rix, Joseph C. Shields +5
We report three new accurate mass measurements for the supermassive black holes hosted by the early-type disk galaxies NGC2787, NGC4459 and NGC4596. The targets were selected from…