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A Secular Resonant Origin for the Loneliness of Hot Jupiters

  • Authors: Christopher Spalding, and Konstantin Batygin

2017 The Astronomical Journal 154 93.

  • Provider: AAS Journals

Caption: Figure 4.

Outer companions within the shaded region will not encounter the resonance and will remain coplanar with the inner giant. We have plotted the configuration of the four systems known where a giant lies interior to a lower-mass planet. All four lie within the region where coplanarity is expected to persist around a well-aligned star. Interestingly, the innermost example, WASP-47, lies almost exactly on the boundary, consistent with it being the closest-in known example and only hot Jupiter with a close outer companion.

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