The period ratio distribution of Kepler's candidate multiplanet systems
arXiv:1409.3320 · doi:10.1093/mnras/stv104
Abstract
We calculate and analyze the distribution of period ratios observed in systems of Kepler exoplanet candidates including studies of both adjacent planet pairs and all planet pairs. These distributions account for both the geometrical bias against detecting more distant planets and the effects of incompleteness due to planets missed by the data reduction pipeline. In addition to some of the known features near first-order mean-motion resonances (MMR), there is a significant excess of planet pairs with period ratios near 2.2. The statistical significance of this feature is assessed using Monte Carlo simulation. We also investigate the distribution of period ratios near first-order MMR and compare different quantities used to measure this distribution. We find that beyond period ratios of ~2.5, the distribution of all period ratios follows a power-law with an exponent -1.26 +/- 0.05. We discuss implications that these results may have on the formation and dynamical evolution of Kepler-like planetary systems---systems of sub-Neptune/super-Earth planets with relatively short orbital periods.
20 pages, many figures, MNRAS accepted
References in corpus (9)
- DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
- Migration and the formation of systems of hot super-Earths and Neptunes
- Resonant Repulsion of Kepler Planet Pairs
- Hot super-Earths and giant planet cores from different migration histories
- Tidal dissipation and the formation of Kepler near-resonant planets
- Bayesian priors for the eccentricity of transiting planets
- Terrestrial Planet Formation in the Presence of Migrating Super-earths
- Tests of In-Situ Formation Scenarios for Compact Multiplanet Systems
- Asymmetric Orbital Distribution near Mean Motion Resonance: Application to Planets Observed by Kepler and Radial Velocities
Cited by in corpus (38)
- Kepler Multi-Planet Systems Exhibit Unexpected Intra-system Uniformity in Mass and Radius
- Tidally-Induced Radius Inflation of Sub-Neptunes
- TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain
- CKS VIII: Eccentricities of Kepler Planets and Tentative Evidence of a High Metallicity Preference for Small Eccentric Planets
- Five Planets Transiting a Ninth Magnitude Star
- Three Small Super-Earths Transiting the nearby star GJ 9827
- Bias and robustness of eccentricity estimates from radial velocity data
- Mass determinations of the three mini-Neptunes transiting TOI-125
- Evidence for at least three planet candidates orbiting HD20794
- A population of planetary systems characterized by short-period, Earth-sized planets
- Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894
- Truly eccentric. II. When can two circular planets mimic a single eccentric orbit?
- Hidden Worlds: Dynamical Architecture Predictions of Undetected Planets in Multi-planet Systems and Applications to TESS Systems
- TESS Investigation -- Demographics of Young Exoplanets (TI-DYE) II: a second giant planet in the 17-Myr system HIP 67522
- When, where, and how many planets end up in first-order resonances?
- The CARMENES search for exoplanets around M dwarfs - The enigmatic planetary system GJ 4276: One eccentric planet or two planets in a 2:1 resonance?
- Visual Analysis and Demographics of Kepler Transit Timing Variations
- Spin-orbit coupling for close-in planets
- Exciting the TTV Phases of Resonant Sub-Neptunes
- Two Super-Earths in the 3:2 MMR around KOI-1599
- On the Orbital Spacing Pattern of Kepler Multiple Planet Systems
- Stable lifetime of compact, evenly-spaced planetary systems with non-equal masses
- Dynamics and Collisional Evolution of Closely Packed Planetary Systems
- Effects of Planetesimal Scattering: Explaining the Observed Offsets from Period Ratios 3:2 and 2:1
- Sculpting the circumbinary planet size distribution through resonant interactions with companion planets
- Departure from the Exact Location of Mean Motion Resonances Induced by the Gas Disk in the Systems Observed by Kepler
- Refined parameters of the HD 22946 planetary system and the true orbital period of planet d
- Dynamical rearrangement of super-Earths during disk dispersal II. Assessment of the magnetospheric rebound model for planet formation scenarios
- Building protoplanetary disks from the molecular cloud: redefining the disk timeline
- TOI-1749: an M dwarf with a Trio of Planets including a Near-Resonant Pair
- Observational constraints on the formation and evolution of Neptune-class exoplanets
- An Integrative Analysis of the Rich Planetary System of the Nearby Star e Eridani: Ideal Targets For Exoplanet Imaging and Biosignature Searches
- Hiding Planets Near and Far: The Parameter Space of Hidden Companions for Known Planetary Systems
- On the importance of wave planet interactions for the migration of two super-Earths embedded in a protoplanetary disk
- Diversities and similarities exhibited by multi-planetary systems and their architectures: I. Orbital spacings
- Higher-Order Mean-Motion Resonances Can Form in Type-I Disk Migration
- The Dynamical History of the Kepler-221 Planet System
- On the Ordering of Exoplanet Systems