Resonances required: dynamical analysis of the 24 sex and HD 200964 planetary systems

  title={Resonances required: dynamical analysis of the 24 sex and HD 200964 planetary systems},
  author={Robert A. Wittenmyer and Jonathan Horner and C. G. Tinney},
  journal={The Astrophysical Journal},
We perform several suites of highly detailed dynamical simulations to investigate the architectures of the 24 ?Sextantis and HD?200964 planetary systems. The best-fit orbital solution for the two planets in the 24?Sex system places them on orbits with periods that lie very close to 2:1 commensurability, while that for the HD?200964 system places the two planets therein in orbits whose periods lie close to a 4:3 commensurability. In both cases, the proposed best-fit orbits are mutually crossing… 

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