Obliquity Tides on Hot Jupiters

  title={Obliquity Tides on Hot Jupiters},
  author={Joshua N. Winn and Matthew J. Holman},
  journal={The Astrophysical Journal},
  • J. Winn, M. Holman
  • Published 20 June 2005
  • Geology, Physics
  • The Astrophysical Journal
Obliquity tides are a potentially important source of heat for extrasolar planets on close-in orbits. Although tidal dissipation will usually reduce the obliquity to zero, a nonzero obliquity can persist if the planet is in a Cassini state, a resonance between spin precession and orbital precession. Obliquity tides might be the cause of the anomalously large size of the transiting planet HD 209458b. 

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