52 citations · 52 across the 4 of their papers we have counts for
14 papers · 1 filter
Early-type Galaxy Halo Dynamics inferred using the PN Spectrograph
N. G. Douglas, A. J. Romanowsky, K. Kuijken +6
A new instrument is providing crucial data with which to probe the structure of dark halos in elliptical galaxies.
Elliptical Galaxies: Darkly Cloaked or Scantily Clad?
A. J. Romanowsky, N. G. Douglas, K. Kuijken +7
Planetary nebulae (PNe) may be the most promising tracers in the halos of early-type galaxies. We have used multi-object spectrographs on the WHT and the VLT, and the new Planetary…
Large-scale Gas Dynamics in the Milky Way
P. Englmaier, O. E. Gerhard, N. Bissantz
We present new gas flow models for the Milky Way inside the solar circle. Using a mass model derived from the COBE/DIRBE maps and clump giant star counts, and using a parametric mo…
Formation of the Galactic Halo
Ortwin Gerhard
Recent observational and theoretical work suggests that the formation of the Galactic stellar halo involved both dissipative processes and the accretion of subfragments. With prese…
Structure and Mass Distribution of the Milky Way Bulge and Disk
Ortwin Gerhard
This article summarizes the structural parameters of the Galactic bulge and disk, and discusses the interpretation of the bulge microlensing observations and the determination of t…
Dynamical masses, time-scales, and evolution of star clusters
Ortwin Gerhard
This review discusses (i) dynamical methods for determining the masses of Galactic and extragalactic star clusters, (ii) dynamical processes and their time-scales for the evolution…