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Paper: Orbital Structure in a Galactic Potential with Spiral Arms
Volume: 230, Galaxy Disks and Disk Galaxies
Page: 207
Authors: Pichardo, B.; Martos, M.; Moreno, E.; Espresate, J.
Abstract: We have modelled the Galactic spiral arms as a superposition of oblate spheroids, and added its contribution to an axisymmetric Galactic model. We have numerically integrated orbits confined to the midplane of symmetry. Our main findings include: the modified potential gives rise to chaotic orbits. However, chaos is found only in direct orbits as defined in the inertial frame of reference; retrograde orbits show no chaos. The orbital structure is clearly modified from that in which its contribution to the total potential is simply represented as a perturbing, periodic term.
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