597 citations · 11.5k across the 182 of their papers we have counts for
5 papers · 2 filters
Bars and the connection between dark and visible matter
E. Athanassoula
Isolated barred galaxies evolve by redistributing their internal angular momentum, which is emitted mainly at the inner disc resonances and absorbed mainly at the resonances in the…
The regeneration of stellar bars by tidal interactions. Numerical simulations of fly-by encounters
I. Berentzen, E. Athanassoula, C. H. Heller +1
We study the regeneration of stellar bars triggered by a tidal interaction, using numerical simulations of either purely stellar or stellar+gas disc galaxies. We find that interact…
On the 3D dynamics and morphology of inner rings
P. A. Patsis, Ch. Skokos, E. Athanassoula
We argue that inner rings in barred spiral galaxies are associated with specific 2D and 3D families of periodic orbits located just beyond the end of the bar. These are families lo…
What determines the strength and the slowdown rate of bars ?
E. Athanassoula
Isolated barred galaxies evolve by redistributing their angular momentum, which, emitted by material in the inner disc at resonance with the bar, can be absorbed by resonant materi…
Numerical simulations of interacting gas-rich barred galaxies. Vertical impact of small companions
I. Berentzen, E. Athanassoula, C. H. Heller +1
We investigate the dynamical effects of an interaction between an initially barred galaxy and a small spherical companion using an N-body/SPH algorithm. In the models described her…