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Rings, spirals and manifolds
E. Athanassoula, M. Romero-Gomez, J. J. Masdemont
Two-armed, grand design spirals and inner and outer rings in barred galaxies can be due to orbits guided by the manifolds emanating from the vicinity of the L1 and L2 Lagrangian po…
Rings and spirals in barred galaxies. I Building blocks
E. Athanassoula, M. Romero-Gomez, J. J. Masdemont
In this paper we present building blocks which can explain the formation and properties both of spirals and of inner and outer rings in barred galaxies. We first briefly summarise…
The role of the unstable equilibrium points in the transfer of matter in galactic potentials
M. Romero-Gomez, J. J. Masdemont, C. Garcia-Gomez +1
We study the role of the unstable equilibrium points in the transfer of matter in a galaxy using the potential of a rotating triaxial system. In particular, we study the neighbourh…