Stability analysis of three exoplanet systems
arXiv:2011.13197 · doi:10.1093/mnras/staa847
Abstract
The orbital solutions of published multi-planet systems are not necessarily dynamically stable on timescales comparable to the lifetime of the system as a whole. For this reason, dynamical tests of the architectures of proposed exoplanetary systems are a critical tool to probe the stability and feasibility of the candidate planetary systems, with the potential to point the way towards refined orbital parameters of those planets. Such studies can even help in the identification of additional companions in such systems. Here we examine the dynamical stability of three planetary systems, orbiting HD 67087, HD 110014, and HD 133131A. We use the published radial velocity measurements of the target stars to determine the best-fit orbital solutions for these planetary systems using the Systemic console. We then employ the n-body integrator Mercury to test the stability of a range of orbital solutions lying within 3- of the nominal best-fit for a duration of 100 Myr. From the results of the n-body integrations, we infer the best-fit orbital parameters using the Bayesian package Astroemperor. We find that both HD 110014 and HD 133131A have long-term stable architectures that lie within the 1- uncertainties of the nominal best-fit to their previously determined orbital solutions. However, the HD 67087 system exhibits a strong tendency toward instability on short timescales. We compare these results to the predictions made from consideration of the angular momentum deficit criterion, and find that its predictions are consistent with our findings.
arXiv comment9 pages, 5 figures, 3 tables. Accepted for publication in MNRAS
References in corpus (53)
- emcee: The MCMC Hammer
- Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
- The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
- The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample
- A resonant chain of four transiting, sub-Neptune planets
- The sdB+M Eclipsing System HW Virginis and its Circumbinary Planets
- Two planets orbiting the recently formed post-common envelope binary NN Serpentis
- Systemic: A Testbed For Characterizing the Detection of Extrasolar Planets. I. The Systemic Console Package
- How eccentric orbital solutions can hide planetary systems in 2:1 resonant orbits
- Constraints on resonant-trapping for two planets embedded in a protoplanetary disc
- Cool Jupiters greatly outnumber their toasty siblings: Occurrence rates from the Anglo-Australian Planet Search
- AMD-stability and the classification of planetary systems
- Detection of a planetary system orbiting the eclipsing polar HU Aqr
- A dynamical analysis of the proposed HU Aquarii planetary system
- The Anglo-Australian Planet Search XXIV: The Frequency of Jupiter Analogs
- Forever alone? Testing single eccentric planetary systems for multiple companions
- The Anglo-Australian Planet Search. XXII. Two New Multi-Planet Systems
- The McDonald Observatory Planet Search: New Long-Period Giant Planets, and Two Interacting Jupiters in the HD 155358 System
- Planetary population synthesis
- GJ 832c: A super-earth in the habitable zone
- Three's Company: An additional non-transiting super-Earth in the bright HD 3167 system, and masses for all three planets
- A Detailed Dynamical Investigation of the Proposed QS Virginis Planetary System
- Planetary Populations in the Mass-Period Diagram: A Statistical Treatment of Exoplanet Formation and the Role of Planet Traps
- Possible detection of two giant extrasolar planets orbiting the eclipsing polar UZ Fornacis
- The effects of external planets on inner systems: multiplicities, inclinations, and pathways to eccentric warm Jupiters
- A Dynamical Analysis of the Proposed Circumbinary HW Virginis Planetary System
- The Anglo-Australian Planet Search. XXIII. Two New Jupiter Analogs
- Revisiting the proposed planetary system orbiting the eclipsing polar HU Aquarii
- Architectures of Planetary Systems and Implications for their Formation
- Effects of Unseen Additional Planetary Perturbers on Compact Extrasolar Planetary Systems
- Hill stability in the AMD framework
- Secular dynamics of multiplanet systems: implications for the formation of hot and warm Jupiters via high-eccentricity migration
- A Detailed Analysis of the HD 73526 2:1 Resonant Planetary System
- AMD-stability in presence of first order Mean Motion Resonances
- Main-sequence progenitor configurations of the NN Ser candidate circumbinary planetary system are dynamically unstable
- The CORALIE survey for southern extrasolar planets XVIII. Three new massive planets and two low mass brown dwarfs at separation larger than 5 AU
- Resonances Required: Dynamical Analysis of the 24 Sex and HD 200964 Planetary Systems
- The Magellan PFS Planet Search Program: Radial Velocity and Stellar Abundance Analyses of the 360 AU, Metal-Poor Binary "Twins" HD 133131A & B
- Five New Exoplanets Orbiting Three Metal-Rich, Massive Stars: Two-Planet Systems Including Long-Period Planets, and an Eccentric Planet
- The Pan-Pacific Planet Search. II. Confirmation of a two-planet system around HD 121056
- Hidden Planetary Friends: On the Stability Of 2-Planet Systems in the Presence of a Distant, Inclined Companion
- Two New Long-Period Giant Planets from the McDonald Observatory Planet Search and Two Stars with Long-Period Radial Velocity Signals Related to Stellar Activity Cycles
- Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques
- Truly eccentric. I. Revisiting eight single-eccentric planetary systems
- The Pan-Pacific Planet Search VII: The most eccentric planet orbiting a giant star
- Dynamical instability and its implications for planetary system architecture
- The Pan-Pacific Planet Search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD33844
- The Pan-Pacific Planet Search VI: Giant planets orbiting HD 86950 and HD 222076
- The Anglo-Australian Planet Search XXV: A Candidate Massive Saturn Analog Orbiting HD 30177
- Giant planet effects on terrestrial planet formation and system architecture
- Precise radial velocities of giant stars VI. A possible 2:1 resonant planet pair around the K giant star Cet
- The HD 181433 Planetary System: Dynamics and a New Orbital Solution
- Re-analysing the dynamical stability of the HD 47366 planetary system