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Resolving the degeneracy between eccentric planets and 2:1 mean motion resonances

Published online by Cambridge University Press:  19 April 2010

K. Goździewski ,
A. Niedzielski ,
J. Schneider ,
A. Moorhead  and
E. Ford
A. Moorhead
Affiliation:
University of Floride, 211 Bryant Space Science Center, PO Box 112055, Gainesville, FL 32611-2055, USA
E. Ford
Affiliation:
University of Floride, 211 Bryant Space Science Center, PO Box 112055, Gainesville, FL 32611-2055, USA
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Abstract

The dynamical state of a multiple planet system reflects the underlying processes of planet formation and orbital evolution. Radial velocity planet searches have yielded several systems that appear to be in or near a low-order mean-motion resonance, including several near a 2:1 mean-motion ratio. Still more systems apparently contain one eccentric planet. We demonstrate that many of these systems are indistinguishable from a system with two planets in a 2:1 mean-motion ratio, and outline a framework for determining how often the observed, apparently-single planets are likely to have such a second planet present.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 42: Extrasolar Planets in Multi-Body Systems: Theory and Observations , 2010 , pp. 161 - 164
Copyright
© EAS, EDP Sciences, 2010

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References

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