## "Rotation curves" in self-consistent models of barred galaxies
^{1} Observatoire de Genève, CH-1290 Sauverny,
Switzerland^{2} Observatoire de Marseille, F-13248 Marseille, France
We compare the "rotation curves" in self-consistent models of
barred galaxies with the ones of SB0's. The models are constructed
with Schwarzschild's method. The models reproduce the wavy pattern in
the rotation curves observed in most SB0 galaxies. Depending on the
local spatial mass fraction of retrograde orbits, the line-of-sight
velocity is lowered or even negative. The local counter-rotation can
be explained by retrograde orbits, without needing to invoke
particular projection effects. Another result is that the model
minimizing the absolute value of the total angular momentum is found
to have a distribution function similar to
Send offprint requests to: wozniak@obmara.cnrs-mrs.fr
## Contents- 1. Introduction
- 2. The self-consistent model
- 2.1. Schwarzschild's technique
- 2.2. Mass model and computational grid
- 2.3. Library of orbits
- 2.3.1. Control of phase space fluctuations
- 2.3.2. Time step
- 2.3.3. Orbital degeneracies
- 2.3.4. Virial check on self-consistency
- 2.4. Computations of DF and velocity fields
- 2.5. Angular momentum averages
- 3. Results
- 3.1. Distribution functions
- 3.2. Velocity fields
- 4. Discussion
- 5. Conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1997 |