Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
EPSC Abstracts
Vol.14, EPSC2020-957, 2020, updated on 08 Oct 2020
https://doi.org/10.5194/epsc2020-957
Europlanet Science Congress 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Asynchronous and chaotic rotation for compact planetary systems

Alexandre C. M. Correia1,2 and Jean-Baptiste Delisle3
Alexandre C. M. Correia and Jean-Baptiste Delisle
  • 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