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| Paper: |
Dynamical Interactions Among Extrasolar Planets |
| Volume: |
294, Scientific Frontiers in Research on Extrasolar Planets |
| Page: |
189 |
| Authors: |
Laughlin, G. |
| Abstract: |
For certain multiple planet systems such as GJ 876 and 55 Cancri, which have (1) been observed for a large number of orbital periods, and which (2) have strong planet-planet gravitational interactions, the approximation that the planets are orbiting on independent Keplerian ellipses is inadequate. We discuss the production of self-consistent dynamical fits to these interacting systems, in which a minimization scheme (such as the Levenberg-Marquardt technique, or a Genetic Algorithm) is used to repeatedly drive an N-body integrator and improve the agreement between the integrated reflex motion of the central star and the observed radial velocities. |
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