98 citations · 98 across the 4 of their papers we have counts for
6 papers · 1 filter
Initial conditions for disc galaxies
Paul J. McMillan, Walter Dehnen
We present a general recipe for constructing N-body realizations of galaxies comprised of near-spherical and disc components. First, an exact spherical distribution function for th…
Kinematic response of the outer stellar disk to a central bar
Gerhard M"uhlbauer, Walter Dehnen
We study, using direct orbit integrations, the kinematic response of the outer stellar disk to the presence of a central bar, as in the Milky-Way. We find that the bar's outer Lind…
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…
Palomar 5 and its tidal tails: New observational results
M. Odenkirchen, E. K. Grebel, W. Dehnen +4
Sloan Digital Sky Survey data for the field of the globular cluster Pal 5 reveal the existence of a long massive stream of tidal debris spanning an arc of 10 degrees on the sky. Pa…
The Distribution of Nearby Stars in Velocity Space
Walter Dehnen
From the tangential velocities of stars all over the sky, one can, in a statistical way, infer their 3D velocity distribution. An application to Hipparcos data reveals rich structu…
Dynamical Models for the Milky Way
Walter Dehnen, James Binney
The only way to map the Galaxy's gravitational potential and the distribution of matter that produces it is by modelling the dynamics of stars and gas. Observations of…