Secular Evolution of Planetary Systems in Binaries

Genya Takeda, Ryosuke Kita, Frederic A Rasio, S. Rubinstein

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The orbital eccentricity of a single planet in a stellar binary system with a sufficiently large mutual inclination angle is known to oscillate on a secular timescale through the Kozai mechanism. We have investigated the effects of the Kozai mechanism on double-planet systems in binaries. The evolutionary sequence of a pair of planets under the influence of a binary companion is fairly complex. Various dynamical outcomes are seen in numerical simulations. One interesting outcome is the rigid rotation of the planetary orbits in which the planetary orbital planes secularly precess in concert, while the orbital eccentricities oscillate synchronously. In such cases the outer planet acts as a propagator of the perturbation from the binary companion to the inner planet and drives the inner planetary orbit to precess at a rate faster than what is predicted by the Kozai mechanism.
Original languageEnglish (US)
Title of host publicationExtreme Solar Systems
EditorsD Fischer, Frederic A Rasio, S E Thorsett, A Wolszczan
PublisherAstronomical Society of the Pacific
ISBN (Electronic)978-1-58381-667-7
ISBN (Print)978-1-58381-666-0
StatePublished - 2008

Publication series

NameAstronomical Society of the Pacific Conference Series


Dive into the research topics of 'Secular Evolution of Planetary Systems in Binaries'. Together they form a unique fingerprint.

Cite this