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2011MNRAS.415.2349R - Mon. Not. R. Astron. Soc., 415, 2349-2358 (2011/August-2)
Tidal decay and orbital circularization in close-in two-planet systems.
RODRIGUEZ A., FERRAZ-MELLO S., MICHTCHENKO T.A., BEAUGE C. and MILONI O.
Abstract (from CDS):
We consider the case of a hot super-Earth planet with a more massive outer companion. As a real example, the CoRoT-7 system is analysed, solving the exact and mean equations of motion. The star–planet tidal interaction produces orbital decay and circularization of the orbit of CoRoT-7b. In addition, the long-term tidal evolution is such that the eccentricity of CoRoT-7c is also circularized and a pair of final circular orbits is obtained. A curve in the space of eccentricities can be constructed through the computation of stationary solutions of mean equations including dissipation. The application to the CoRoT-7 system shows that the stationary curve agrees with the result of numerical simulations of exact equations.
A similar investigation performed in a super-Earth–Jupiter two-planet system shows that the doubly circular state is accelerated when there is a significant orbital migration of the inner planet, in comparison with previous results where migration is neglected. The dynamics of the ionized and molecular interstellar medium in powerful obscured quasars at z ≥ 3.5
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): celestial mechanics - planetary systems
Simbad objects: 7
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