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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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