Open AccessThe role of the mean and forced eccentricities in the secular dynamic of circumbinary planets
Author(s) -
Federico Andrés Zoppetti,
C. Beaugé,
A. M. Leiva
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1365/1/012029
Subject(s) - circumbinary planet , eccentricity (behavior) , dissipative system , planet , physics , celestial mechanics , binary number , statistical physics , classical mechanics , astrophysics , theoretical physics , mathematics , thermodynamics , political science , law , arithmetic
Within the framework of the Restricted Three Body Problem (RTBP), we consider the orbital evolution of a circumbinary (CB) planet. We develop a simple analytical model to explain the mean behaviour of the planetary eccentricity and better identify the nature of the main contributors of eccentricity oscilations. Our theory is validated by comparing with N-body simulation. We analyse the effect of including dissipative forces in our theory and compare with a N-body simulation in which the dissipative force is the interaction with a protoplanetary disc. Finally, we use our model to explain dynamical maps in the CB region and distinguish domains where the secular dynamics dominate over the resonant perturbations.