Asynchronous and chaotic rotation for compact planetary systems
- 1CFisUC, Department of Physics, University of Coimbra, Coimbra, Portugal (acor@uc.pt)
- 2ASD, IMCCE, Observatoire de Paris, PSL Université, 77 Av. Denfert-Rochereau, 75014 Paris, France
- 3Observatoire de l'Université de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
We study the spin evolution of close-in planets in compact multi-planetary systems. The rotation period of these planets is often assumed to be synchronous with the orbital period due to tidal dissipation. Here we show that planet-planet perturbations can drive the spin of these planets into non-synchronous or even chaotic states. These asynchronous configurations are possible even for nearly circular orbits and will impact the habitability of these planets. We also present a very simple method to probe the spin dynamics from the orbital perturbations.
How to cite: Correia, A. C. M. and Delisle, J.-B.: Asynchronous and chaotic rotation for compact planetary systems, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-957, https://doi.org/10.5194/epsc2020-957, 2020
