Tidal interactions of close-in extrasolar planets: the OGLE cases

Abstract

Close-in extrasolar planets experience extreme tidal interactions with their host stars. This may lead to a reduction of the planetary orbit and a spin-up of stellar rotation. Tidal interactions have been computed for a number of extrasolar planets in circular orbits within 0.06 AU, namely for OGLE-TR-56 b. We compare our range of the tidal dissipation value with two dissipation models from Sasselov (2003) and conclude that our choices are equivalent to these models. However, applied to the planet OGLE-TR-56 b, we find in contrast to Sasselov (2003) 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 (2003). Due to limitations in the observational techniques, we do not see a possibility to distinguish between the two dissipation models as outlined by Sasselov (2003). OGLE-TR-56 b may therefore not serve as a test case for dissipation models. The probable existence of OGLE-TR-3 b at 0.02 AU and the discovery of OGLE-TR-113 b at 0.023 AU and OGLE-TR-132 b at 0.03 AU may also counter Sasselovs (2003) assumption of a pile-up stopping boundary at 0.04 AU.

7 pages, 4 figures

References in corpus (12)

• Detection of Planetary Transits Across a Sun-like Star
• Solar Models: current epoch and time dependences, neutrinos, and helioseismological properties
• Tidal Decay of Close Planetary Orbits
• Orbital Evolution and Migration of Giant Planets: Modeling Extrasolar Planets
• Two new "very hot Jupiters" among the OGLE transiting candidates
• A transiting extrasolar giant planet around the star OGLE-TR-113
• Probable detection of starlight reflected from the giant exoplanet orbiting tau Bootis
• New Data and Improved Parameters for the Transiting Planet OGLE-TR-56b
• The New Transiting Planet OGLE-TR-56b: Orbit and Atmosphere
• Multicolor Observations of a Planetary Transit of HD 209458
• High-resolution spectroscopic follow-up of OGLE planetary transit candidates in the Galactic bulge: two possible Jupiter-mass planets and two blends
• A Possible New Transiting Planet

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