A Population of Very-Hot Super-Earths in Multiple-Planet Systems Should be Uncovered by Kepler

Abstract

We simulate a Kepler-like observation of a theoretical exoplanet population and we show that the observed orbital period distribution of the Kepler giant planet candidates is best matched by an average stellar specific dissipation function Q_* in the interval 10^6 ~< Q_* ~< 10^7. In that situation, the few super-Earths that are driven to orbital periods P < 1 day by dynamical interactions in multiple-planet systems will survive tidal disruption for a significant fraction of the main-sequence lifetimes of their stellar hosts. Consequently, though these very-hot super-Earths are not characteristic of the overall super-Earth population, their substantial transit probability implies that they should be significant contributors to the full super-Earth population uncovered by Kepler. As a result, the CoRoT-7 system may be the first representative of a population of very-hot super-Earths that we suggest should be found in multiple-planet systems preferentially orbiting the least-dissipative stellar hosts in the Kepler sample.

9 pages and 5 figures in emulateapj format; accepted for publication in ApJL

References in corpus (12)

• Hot Stars with Hot Jupiters Have High Obliquities
• Tidal Evolution of Close-in Extra-Solar Planets
• Evidence of Possible Spin-Orbit Misalignment Along the Line of Sight in Transiting Exoplanet Systems
• On the tidal evolution of Hot Jupiters on inclined orbits
• Toward a Deterministic Model of Planetary Formation VI: Dynamical Interaction and Coagulation of Multiple Rocky Embryos and Super-Earth Systems around Solar Type Stars
• Tidal Heating of Extra-Solar Planets
• Falling Transiting Extrasolar Giant Planets
• Inflating and Deflating Hot Jupiters: Coupled Tidal and Thermal Evolution of Known Transiting Planets
• An Investigation into the Radial Velocity Variations of CoRoT-7
• Characterizing the Orbital Eccentricities of Transiting Extrasolar Planets with Photometric Observations
• Coupled Evolution with Tides of the Radius and Orbit of Transiting Giant Planets: General Results
• Eccentricity Trap: Trapping of Resonantly Interacting Planets near the Disk Inner Edge

Cited by in corpus (39)

• Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
• Tidal dissipation in stars and giant planets
• Collisions Between Gravity-Dominated Bodies: 1. Outcome Regimes and Scaling Laws
• Collisions between Gravity-Dominated Bodies: 2. The Diversity of Impact Outcomes during the End Stage of Planet Formation
• Characterization of exoplanets from their formation II: The planetary mass-radius relationship
• A Study of the Shortest-Period Planets Found With Kepler
• Exoplanet Statistics and Theoretical Implications
• A short-period censor of sub-Jupiter mass exoplanets with low density
• The New Generation Planetary Population Synthesis (NGPPS). IV. Planetary systems around low-mass stars
• Transits and Occultations of an Earth-Sized Planet in an 8.5-Hour Orbit
• Habitable Evaporated Cores: Transforming Mini-Neptunes into Super-Earths in the Habitable Zones of M Dwarfs
• The K2-ESPRINT Project. I. Discovery of the Disintegrating Rocky Planet K2-22b with a Cometary Head and Leading Tail
• KOI-2700b - A Planet Candidate With Dusty Effluents on a 22-Hour Orbit
• Magnetospheric Truncation, Tidal Inspiral, and the Creation of Short and Ultra-Short Period Planets
• Kepler-78 and the Ultra-Short-Period Planets
• Constraining Tidal Dissipation in Stars from The Destruction Rates of Exoplanets
• Ultra-short-period planets from secular chaos
• Absence of a metallicity effect for ultra-short-period planets
• Low-Eccentricity Migration of Ultra-Short Period Planets in Multi-Planet Systems
• Kepler Exoplanet Candidate Host Stars are Preferentially Metal Rich
• Larger mutual inclinations for the shortest-period planets
• Formation of Ultra-Short-Period Planets by Obliquity-Driven Tidal Runaway
• The mass-period distribution of close-in exoplanets
• TOI-2076 and TOI-1807: Two young, comoving planetary systems within 50 pc identified by TESS that are ideal candidates for further follow-up
• Ultra-short-period Planets are Stable Against Tidal Inspiral
• Company for the ultra-high density, ultra-short period sub-Earth GJ 367 b: discovery of two additional low-mass planets at 11.5 and 34 days
• Can Kozai-Lidov cycles explain Kepler-78b?
• A population of planetary systems characterized by short-period, Earth-sized planets
• Mutual Inclination Excitation by Stellar Oblateness
• Formation of short-period planets by disk migration
• Resonant and Ultra-short-period Planet Systems are at Opposite Ends of the Exoplanet Age Distribution
• Resonances of Multiple Exoplanets and Implications for Their Formation
• Very Low-mass Stellar and Substellar Companions to Solar-like Stars from Marvels III: A Short-Period Brown Dwarf Candidate Around An Active G0Iv Subgiant
• A hot Mars-sized exoplanet transiting an M dwarf
• Mutual Inclination of Ultra-Short-Period Planets with Time Varying Stellar J2-moment
• Planets Across Space and Time (PAST). VI. Age Dependence of the Occurrence and Architecture of Ultra-Short-Period Planet Systems
• Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions
• Effects of Self-gravity on Mass-loss of the Post-impact Super-Earths
• Variations in the Radius Distribution of Single- and Compact Multiple-transiting Planets