Secular Orbital Dynamics of Hierarchical Two Planet Systems

Details Secular Orbital Dynamics of Hierarchical Two Planet Systems Secular Orbital Dynamics of Hierarchical Two Planet Systems

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dda....40.0403v&link_type=abstract

American Astronomical Society, DDA meeting #40, #4.03; Bulletin of the American Astronomical Society, Vol. 41, p.897

Astronomy and Astrophysics

Astronomy

Scientific paper

The preponderance of multi-planet extrasolar systems has kindled interest in using their resonant and secular dynamical evolution as a probe of planet formation. We combine published radial velocity data with Markov Chain Monte Carlo analyses in order to obtain an ensemble of masses, semimajor axes, eccentricities and orbital angles for each of 5 multi-planet systems: HD 11964, HD 38529, HD 108874, HD 168443, and HD 190360. We find that some of these systems may have a significant relative inclination and participate in a Kozai-like high-inclination asymmetric resonance. We report on the planetary systems' resulting stability, secular evolution regimes, and the significance of relativistic precession. Our simulations quantify the likelihood of different dynamical regimes for each system, and highlight the dangers of restricting simulation phase space to a single set of initial conditions.

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