Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dda....41.0406b&link_type=abstract
American Astronomical Society, DDA meeting #41, #4.06; Bulletin of the American Astronomical Society, Vol. 41, p.928
Astronomy and Astrophysics
Astronomy
Scientific paper
Internal gravity waves are excited at the interface of convection and radiation zones of a solar-type star, by the tidal forcing of a short-period planet. The fate of these waves as they approach the centre of the star depends on their amplitude. We discuss the results of numerical simulations of these waves approaching the centre of a star, and the resulting evolution of the spin of the central regions of the star and the orbit of the planet. If the waves break, we find a strong frequency dependence of the tidal quality factor Q'. This has implications for the survival of planets on short-period orbits around solar-type stars, such as WASP-19 b, which will be discussed.
Barker Adrian
Ogilvie Gordon I.
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