Obliquity Tides on Hot Jupiters
Astrophysics
2009-11-11 v1
Abstract
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.
Keywords
Cite
@article{arxiv.astro-ph/0506468,
title = {Obliquity Tides on Hot Jupiters},
author = {Joshua N. Winn and Matthew J. Holman},
journal= {arXiv preprint arXiv:astro-ph/0506468},
year = {2009}
}
Comments
To appear in ApJ Letters [9 pages, 2 figures]