Chaos in multiplanetary extrasolar systems

Abstract

Here we present an initial look at the dynamics and stability of 178 multiplanetary systems which are already confirmed and listed in the NASA Exoplanet Archive. To distinguish between the chaotic and regular nature of a system, the value of the MEGNO indicator for each system was determined. Almost three-quarters of them could be labelled as long-term stable. Only 45 studied systems show chaotic behaviour. We consequently investigated the effects of the number of planets and their parameters on the system stability. A comparison of results obtained using the MEGNO indicator and machine-learning algorithm SPOCK suggests that the SPOCK could be used as an effective tool for reviewing the stability of multiplanetary systems. A similar study was already published by Laskar and Petit in 2017. We compared their analysis based on the AMD criterion with our results. The possible discrepancies are discussed.

arXiv comment8 pages, 5 figures; data available at http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/MNRAS/518/2068

References in corpus (36)

• XGBoost: A Scalable Tree Boosting System
• REBOUND: An open-source multi-purpose N-body code for collisional dynamics
• The Lick-Carnegie Exoplanet Survey: A Uranus-mass Fourth Planet for GJ 876 in an Extrasolar Laplace Configuration
• The orbital eccentricity of small planet systems
• Exoplanet Orbital Eccentricities Derived From LAMOST-Kepler Analysis
• Architecture of Planetary Systems Based on Kepler Data: Number of Planets and Coplanarity
• Six transiting planets and a chain of Laplace resonances in TOI-178
• The Kepler Dichotomy among the M Dwarfs: Half of Systems Contain Five or More Coplanar Planets
• AMD-stability and the classification of planetary systems
• Predicting the long-term stability of compact multiplanet systems
• Architectures of Exoplanetary Systems. III: Eccentricity and Mutual Inclination Distributions of AMD-stable Planetary Systems
• HD45364, a pair of planets in a 3:2 mean motion resonance
• Dynamical Evolution of Multi-Resonant Systems: the Case of GJ876
• An information theoretic framework for classifying exoplanetary system architectures
• On the extrasolar multi-planet system around HD160691
• AMD-stability in presence of first order Mean Motion Resonances
• Stability of Satellites in Closely Packed Planetary Systems
• Dynamics and Formation of the Near-Resonant K2-24 System: Insights from Transit-Timing Variations and Radial Velocities
• Second-order variational equations for N-body simulations
• Follow-up photometry of TrES-3
• A study of the stability regions in the planetary system HD 74156 - Can it host earthlike planets in habitable zones?
• Possible solution to the riddle of HD 82943 multiplanet system: the three-planet resonance 1:2:5?
• The Reversibility Error Method (REM): a new, dynamical fast indicator for planetary dynamics
• Chaos detection tools: application to a self-consistent triaxial model
• K2-146: Discovery of Planet c, Precise Masses from Transit Timing, and Observed Precession
• The Anglo-Australian Planet Search XXV: A Candidate Massive Saturn Analog Orbiting HD 30177
• Long Period Jovian Tilts the Orbits of Two sub-Neptunes Relative to Stellar Spin Axis in Kepler-129
• A Dynamical Investigation of the Proposed BD +20 2457 System
• The CARMENES search for exoplanets around M dwarfs. Dynamical characterization of the multiple planet system GJ 1148 and prospects of habitable exomoons around GJ 1148 b
• Planets around the evolved stars 24 Booties and $\gamma$ Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR
• TRAPPIST-1: Dynamical analysis of the transit-timing variations and origin of the resonant chain
• Two Super-Earths in the 3:2 MMR around KOI-1599
• Stability Constrained Characterization of Multiplanet Systems
• Orbital Dynamics and the Evolution of Planetary Habitability in the AU Mic System
• WASP-92, WASP-93 and WASP-118: Transit timing variations and long-term stability of the systems
• Planet-planet scattering in presence of a companion star

Cited by in corpus (6)

• The GAPS program at TNG XLVII: The unusual formation history of V1298 Tau
• Stellar obliquities of eight close-in gas giant exoplanets
• Lagrange vs. Lyapunov stability of hierarchical triple systems: dependence on the mutual inclination between inner and outer orbits
• HD 163296 and its Giant Planets: Creation of Exo-comets, Interstellar Objects and Transport of Volatile Material
• Ariel stellar characterisation III. Fast rotators and new FGK stars in the Ariel Mission Candidate Sample
• The Dynamical Environment of Kepler-223 Planetary System