2004A&A...427.1075P -
Astronomy and Astrophysics, volume 427, 1075-1080 (2004/12-1)
Tidal interactions of close-in extrasolar planets: The OGLE cases.
PAETZOLD M., CARONE L. and RAUER H.
Abstract (from CDS):
Close-in extrasolar planets experience extreme tidal interactions with their host stars. This may lead to a reduction of the planetary radius and a spin-up of stellar rotation. Tidal interactions have been computed for a number of extrasolar planets in circular orbits within 0.06AU, namely for OGLE-TR-56b. We compare our range of the tidal dissipation value with two dissipation models from Sasselov (
2003ApJ...596.1327S) and conclude that our choices are equivalent to these models. However, applied to the planet OGLE-TR-56b, we find in contrast to Sasselov (
2003ApJ...596.1327S) that this planet will spiral-in toward the host star in a few billion years. We show that the average and maximum value of our range of dissipation are equivalent to the linear and quadratic dissipation models of Sasselov (
2003ApJ...596.1327S). Due to limitations in the observational techniques, we do not see a possibility to distinguish between the two dissipation models as outlined by Sasselov (
2003ApJ...596.1327S). OGLE-TR-56b may therefore not be well suited to serve as a test case for dissipation models. The probable existence of OGLE-TR-3b at 0.02AU and the discovery of OGLE-TR-113b at 0.023AU and OGLE-TR-132b at 0.03AU may also counter Sasselovs (
2003ApJ...596.1327S) assumption of a pile-up stopping boundary at 0.04AU.
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Journal keyword(s):
planetary systems - stars: rotation - planets and satellites: general
Simbad objects:
14
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