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Tidal dissipation in multi-planet systems and constraints to orbit fitting

J. Laskar, G. Boué, A. C. M. Correia

We present here in full detail the linear secular theory with tidal damping that was used to constrain the fit to the HD 10180 planetary system in Lovis et al. (2011, A&A, 528, A112). The theory is very general and can provide some intuitive understanding of the final state of a planetary system when one or more planets are close to their central star.We globally recover the results of Mardling (2007, MNRAS, 382, 1768). However, for the HD 209458 planetary system, we show that the consideration of the tides raised by the central star on the planet leads one to believe that the eccentricity of HD 209458b is most probably much smaller than 0.01.

methods: analytical – celestial mechanics – planets and satellites: general

Astronomy & Astrophysics
Volume 538, Number of pages A105_1
2012 February

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia