期刊
ASTROPHYSICAL JOURNAL
卷 628, 期 2, 页码 L159-L162出版社
IOP PUBLISHING LTD
DOI: 10.1086/432834
关键词
celestial mechanics; planetary systems : formation; planets and satellites : formation; stars : individual (HD 209458)
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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