The Exoplanet Population Observation Simulator. I - The Inner Edges of Planetary Systems

Abstract

The Kepler survey provides a statistical census of planetary systems out to the habitable zone. Because most planets are non-transiting, orbital architectures are best estimated using simulated observations of ensemble populations. Here, we introduce EPOS, the Exoplanet Population Observation Simulator, to estimate the prevalence and orbital architectures of multi-planet systems based on the latest Kepler data release, DR25. We estimate that at least 42% of sun-like stars have nearly coplanar planetary systems with 7 or more exoplanets. The fraction of stars with at least one planet within 1 au could be as high as 100% depending on assumptions about the distribution of single transiting planets. We estimate an occurrence rate of planets in the habitable zone around sun-like stars of eta_earth=36+-14%. The innermost planets in multi-planet systems are clustered around an orbital period of 10 days (0.1 au), reminiscent of the protoplanetary disk inner edge or could be explained by a planet trap at that location. Only a small fraction of planetary systems have the innermost planet at long orbital periods, with fewer than ~8% and ~3% having no planet interior to the orbit of Mercury and Venus, respectively. These results reinforce the view that the solar system is not a typical planetary system, but an outlier among the distribution of known exoplanetary systems. We predict that at least half of the habitable zone exoplanets are accompanied by (non-transiting) planets at shorter orbital periods, hence knowledge of a close-in exoplanet could be used as a way to optimize the search for Earth-size planets in the Habitable Zone with future direct imaging missions.

Accepted in AAS journals, code available on github

References in corpus (22)

• The NumPy array: a structure for efficient numerical computation
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• One or more bound planets per Milky Way star from microlensing observations
• An asteroseismic view of the radius valley: stripped cores, not born rocky
• Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog With Measured Completeness and Reliability Based on Data Release 25
• Migration and the formation of systems of hot super-Earths and Neptunes
• The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets
• A stellar-mass-dependent drop in planet occurrence rates
• The Exoplanet Mass-Ratio Function from the MOA-II Survey: Discovery of a Break and Likely Peak at a Neptune Mass
• Exoplanet population inference and the abundance of Earth analogs from noisy, incomplete catalogs
• Kepler constraints on planets near hot Jupiters
• Exploring Exoplanet Populations with NASA's Kepler Mission
• Kepler Multi-Planet Systems Exhibit Unexpected Intra-system Uniformity in Mass and Radius
• A Statistical Reconstruction of the Planet Population Around Kepler Solar-Type Stars
• Hot super-Earths and giant planet cores from different migration histories
• Obliquities of Kepler Stars: Comparison of Single- and Multiple-Transit Systems
• A Super-Solar Metallicity For Stars With Hot Rocky Exoplanets
• Spin-orbit Misalignment as a Driver of the Kepler Dichotomy
• Perturbation of Compact Planetary Systems by Distant Giant Planets
• The signatures of the parental cluster on field planetary systems
• A Universal Break in the Planet-to-Star Mass-Ratio Function of Kepler MKG stars
• Transit Clairvoyance: Enhancing TESS follow-up using artificial neural networks

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• The New Generation Planetary Population Synthesis (NGPPS). II. Planetary population of solar-like stars and overview of statistical results
• Architectures of Exoplanetary Systems. I: A Clustered Forward Model for Exoplanetary Systems around Kepler's FGK Stars
• Searching the Entirety of Kepler Data. II. Occurrence Rate Estimates for FGK Stars
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• A Spectroscopic Analysis of the California-Kepler Survey Sample: I. Stellar Parameters, Planetary Radii and a Slope in the Radius Gap
• Photoevaporation vs. core-powered mass-loss: model comparison with the 3D radius gap
• Characterizing Exoplanet Habitability
• Origin of Earth's water: sources and constraints
• Solar System Formation in the Context of Extra-Solar Planets
• Occurrence Rates of Planets Orbiting M Stars: Applying ABC to Kepler DR25, Gaia DR2, and 2MASS Data
• A stellar mass dependence of structured disks: a possible link with exoplanet demographics
• Conclusive evidence for a population of water-worlds around M-dwarfs remains elusive
• Water in the terrestrial planet-forming zone of the PDS 70 disk
• Architectures of Exoplanetary Systems. III: Eccentricity and Mutual Inclination Distributions of AMD-stable Planetary Systems
• The New Generation Planetary Population Synthesis (NGPPS). III. Warm super-Earths and cold Jupiters: A weak occurrence correlation, but with a strong architecture-composition link
• Rocky super-Earths or waterworlds: the interplay of planet migration, pebble accretion and disc evolution
• A Probabilistic Approach to Kepler Completeness and Reliability for Exoplanet Occurrence Rates
• An Exomoon Survey of 70 Cool Giant Exoplanets and the New Candidate Kepler-1708 b-i
• Influence of sub- and super-solar metallicities on the compositions of solid planetary building blocks
• The Exoplanet Radius Valley from Gas-driven Planet Migration and Breaking of Resonant Chains
• Testing exoplanet evaporation with multi-transiting systems
• Occurrence and Architecture of Kepler Planetary Systems as Functions of Stellar Mass and Effective Temperature
• Planet formation and migration near the silicate sublimation front in protoplanetary disks
• Why do M dwarfs have more transiting planets?
• A Tale of Planet Formation: From Dust to Planets
• Evidence for Hidden Nearby Companions to Hot Jupiters
• The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1-42
• RV-detected planets around M dwarfs: Challenges for core accretion models
• An information theoretic framework for classifying exoplanetary system architectures
• A fading radius valley towards M-dwarfs, a persistent density valley across stellar types
• Fingerprints of giant planets in the composition of solar twins
• The California-Kepler Survey. VI: Kepler Multis and Singles Have Similar Planet and Stellar Properties Indicating a Common Origin
• A Joint Mass-Radius-Period Distribution of Exoplanets
• The New Generation Planetary Population Synthesis (NGPPS). V. Predetermination of planet types in global core accretion models
• The Case for Technosignatures: Why They May Be Abundant, Long-lived, Highly Detectable, and Unambiguous
• The eccentricity distribution of giant planets and their relation to super-Earths in the pebble accretion scenario
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• The Exoplanet Population Observation Simulator. II -- Population Synthesis in the Era of Kepler
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• Predicting the Exoplanet Yield of the TESS Prime and Extended Missions Through Years 1-7
• Constraining the entropy of formation from young transiting planets
• The New Generation Planetary Population Synthesis (NGPPS). VI. Introducing KOBE: Kepler Observes Bern Exoplanets. Theoretical perspectives on the architecture of planetary systems: Peas in a pod
• Plausible constraints on the range of bulk terrestrial exoplanet compositions in the Solar neighbourhood
• The Kepler Peas in a Pod Pattern is Astrophysical
• A framework for the architecture of exoplanetary systems. I. Four classes of planetary system architecture
• Gravitational wave population inference with deep flow-based generative network
• Influence of planetary gas accretion on the shape and depth of gaps in protoplanetary discs
• Mutual Orbital Inclinations Between Cold Jupiters and Inner Super-Earths
• The multiplicity distribution of Kepler's exoplanets
• The fundamentals of Lyman-alpha exoplanet transits
• Scaling K2. VI. Reduced Small Planet Occurrence in High Galactic Amplitude Stars
• Giants are bullies: how their growth influences systems of inner sub-Neptunes and super-Earths
• Super-Earths and Earth-like Exoplanets
• Architectures of Exoplanetary Systems. II: An Increase in Inner Planetary System Occurrence Toward Later Spectral Types for Kepler's FGK Dwarfs
• How drifting and evaporating pebbles shape giant planets III: The formation of WASP-77A b and $\tau$ Boötis b
• MRI-active inner regions of protoplanetary discs. I. A detailed model of disc structure
• The impact of stripped cores on the frequency of Earth-size planets in the habitable zone
• The Demographics of Kepler's Earths and super-Earths into the Habitable Zone
• Formation of planetary systems by pebble accretion and migration: Hot super-Earth systems from breaking compact resonant chains
• Are the observed gaps in protoplanetary discs caused by growing planets?
• How to make giant planets via pebble accretion
• The intrinsic multiplicity distribution of exoplanets revealed from the radial velocity method
• At least one in a dozen stars exhibits evidence of planetary ingestion
• Exoplanets in the Galactic context: Planet occurrence rates in the thin disk, thick disk and stellar halo of Kepler stars
• Dynamical Constraints on Mercury's Collisional Origin
• Peas in a Pod? Radius correlations in Kepler multi-planet systems
• EDEN: Sensitivity Analysis and Transiting Planet Detection Limits for Nearby Late Red Dwarfs
• Scaling K2. IV. A Uniform Planet Sample for Campaigns 1-8 and 10-18
• Inner Planetary System Gap Complexity is a Predictor of Outer Giant Planets
• Scaling K2. II. Assembly of a Fully Automated C5 Planet Candidate Catalog Using EDI-Vetter
• Probing the capability of future direct imaging missions to spectrally constrain the frequency of Earth-like planets
• Hidden Worlds: Dynamical Architecture Predictions of Undetected Planets in Multi-planet Systems and Applications to TESS Systems
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• The Magellan/PFS Exoplanet Search: A 55-day period dense Neptune transiting the bright ($V=8.6$) star HD 95338
• Joint Radial Velocity and Direct Imaging Planet Yield Calculations: I. Self-consistent Planet Populations
• Inner rocky super-Earth formation: distinguishing the formation pathways in viscously heated and passive discs
• The Stars Kepler Missed: Investigating the Kepler Target Selection Function Using Gaia DR2
• Planet Occurrence Rate Correlated to Stellar Dynamical History: Evidence from Kepler and Gaia
• Proximity of exoplanets to first-order mean-motion resonances
• Scaling K2 VII: Evidence for a high occurrence rate of hot sub-Neptunes at intermediate ages
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• The Demographics of Exoplanets
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• A Gap in the Mass Distribution for Warm Neptune and Terrestrial Planets
• Developing a Drift Rate Distribution for Technosignature Searches of Exoplanets
• Sensitivity Analyses of Exoplanet Occurrence Rates from Kepler and Gaia
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• X-Shooter Survey of Young Intermediate Mass Stars -- I. Stellar Characterization and Disc Evolution
• There is no disk mass budget problem of planet formation
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