Dimensionality and integrals of motion of the Trappist-1 planetary system

Johannes Floß, Hanno Rein, Paul Brumer
(Submitted on 22 Feb 2018)

The number of integrals of motion of the Trappist-1 system – a late M-dwarf orbited by seven Earth-sized planets – was determined numerically, using an adapted version of the correlation dimension method. It was found that over the investigated time-scales of up to 20,000 years the number of integrals of motion is only as high as one would find for a system of seven non-interacting planets – despite the fact that the planets in the Trappist-1 system are strongly interacting. Considering perturbed versions of the Trappist-1 system shows that the system likely occupies an atypical part of phase-space with high stability. These findings are consistent with earlier studies.

Comments:    6 pages, 6 figures, to be submitted to MNRAS
Subjects:    Earth and Planetary Astrophysics (astro-ph.EP)
Cite as:    arXiv:1802.08300 [astro-ph.EP] (or arXiv:1802.08300v1 [astro-ph.EP] for this version)
Submission history
From: Johannes Floß
[v1] Thu, 22 Feb 2018 21:12:56 GMT (444kb,D)
https://arxiv.org/abs/1802.08300