Dimensionality and integrals of motion of the Trappist-1 planetary system
Abstract The number of isolating 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 yr the n...
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Published in | Monthly notices of the Royal Astronomical Society Vol. 477; no. 4; pp. 4874 - 4878 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Oxford University Press
01.07.2018
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Subjects | |
Online Access | Get full text |
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Summary: | Abstract
The number of isolating 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 yr the number of isolating integrals of motion is the same 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 may occupy an atypical part of phase-space with high stability. These findings are consistent with earlier studies. |
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ISSN: | 0035-8711 1365-2966 |
DOI: | 10.1093/mnras/sty959 |