On The Origins Of Eccentric Close-in Planets
arXiv:0808.3724 · doi:10.1086/592818
Abstract
Strong tidal interaction with the central star can circularize the orbits of close-in planets. With the standard tidal quality factor Q of our solar system, estimated circularization times for close-in extrasolar planets are typically shorter than the ages of the host stars. While most extrasolar planets with orbital radii a < 0.1 AU indeed have circular orbits, some close-in planets with substantial orbital eccentricities have recently been discovered. This new class of eccentric close-in planets implies that either their tidal Q factor is considerably higher, or circularization is prevented by an external perturbation. Here we constrain the tidal Q factor for transiting extrasolar planets by comparing their circularization times with accurately determined stellar ages. Using estimated secular perturbation timescales, we also provide constraints on the properties of hypothetical second planets exterior to the known ones.
arXiv comment4 pages, accepted for publication in ApJL
References in corpus (16)
- Shrinking binary and planetary orbits by Kozai cycles with tidal friction
- Formation of Hot Planets by a combination of planet scattering, tidal circularization, and Kozai mechanism
- Tidal Decay of Close Planetary Orbits
- Tidal dissipation in rotating giant planets
- The Equilibrium-Tide Model for Tidal Friction
- Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
- Spin-Orbit Evolution Of Short-Period Planets
- On the Relation Between Hot Jupiters & the Roche Limit
- Tidal Interactions and Disruptions of Giant Planets on Highly Eccentric Orbits
- Origin of Tidal Dissipation in Jupiter: II. the Value of Q
- Planetary Systems in Binaries. I. Dynamical Classification
- A ~5 M_earth Super-Earth Orbiting GJ 436?: The Power of Near-Grazing Transits
- A Possible Spin-Orbit Misalignment in the Transiting Eccentric Planet HD 17156b
- An assessment of the rotation rates of the host stars of extrasolar planets
- Effects of Secular Interactions in Extrasolar Planetary Systems
- Observational Consequences of the Recently Proposed Super-Earth Orbiting GJ436
Cited by in corpus (71)
- HAT-P-11b: A Super-Neptune Planet Transiting a Bright K Star in the Kepler Field
- HAT-P-16b: A 4 Mj Planet Transiting A Bright Star On An Eccentric Orbit
- The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets
- Tidal Evolution of Close-in Planets
- Probing the Interiors of Very Hot Jupiters Using Transit Light Curves
- The physical properties of extrasolar planets
- Consequences of the Ejection and Disruption of Giant Planets
- Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b
- Calibration of Equilibrium Tide Theory for Extrasolar Planet Systems
- HAT-P-32b and HAT-P-33b: Two Highly Inflated Hot Jupiters Transiting High-Jitter Stars
- Empirical evidence for tidal evolution in transiting planetary systems
- Magnetospheric Truncation, Tidal Inspiral, and the Creation of Short and Ultra-Short Period Planets
- WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets
- Chromospheric Activities and Kinematics for Solar Type Dwarfs and Subgiants: Analysis of the Activity Distribution and the AVR
- The Exoplanet Eccentricity Distribution from Kepler Planet Candidates
- Calibration of Equilibrium Tide Theory for Extrasolar Planet Systems II
- Scattering outcomes of close-in planets: constraints on planet migration
- Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems
- A giant impact as the likely origin of different twins in the Kepler-107 exoplanet system
- WASP-14b: 7.3 Mj transiting planet in an eccentric orbit
- WASP-10b: a 3M_J, gas-giant planet transiting a late-type K star
- Observational biases in determining extrasolar planet eccentricities in single-planet systems
- CoRoT-10b: a giant planet in a 13.24 day eccentric orbit
- Hot Jupiters and the evolution of stellar angular momentum
- Tidal Evolution of Close-in Extrasolar Planets: High Stellar Q from New Theoretical Models
- Possible constraints on exoplanet magnetic field strengths from planet-star interaction
- Eccentricity evolution during planet-disc interaction
- Long period planets from dynamical relaxation
- Are the Kepler Near-Resonance Planet Pairs due to Tidal Dissipation?
- Evolution of angular-momentum-losing exoplanetary systems : Revisiting Darwin stability
- On the Survivability and Metamorphism of Tidally Disrupted Giant Planets: the Role of Dense Cores
- SOPHIE velocimetry of Kepler transit candidates. VIII. KOI-205 b: a brown-dwarf companion to a K-type dwarf
- EXONEST: Bayesian Model Selection Applied to the Detection and Characterization of Exoplanets Via Photometric Variations
- HAT-P-15b: A 10.9-day Extrasolar Planet Transiting a Solar-type Star
- A Quasi-Stationary Solution to Gliese 436b's Eccentricity
- A Neptune-mass Planet Orbiting the Nearby G Dwarf HD16417
- On the Eccentricity Distribution of Short-Period Single-Planet Systems
- KOI-200b and KOI-889b: two transiting exoplanets detected and characterized with Kepler, SOPHIE and HARPS-N
- Orbital Dynamics of Multi-Planet Systems with Eccentricity Diversity
- The Eccentricity Distribution of Short-Period Planet Candidates Detected by Kepler in Occultation
- HAT-P-24b: An inflated hot-Jupiter on a 3.36d period transiting a hot, metal-poor star
- Secular Orbital Evolution of Compact Planet Systems
- Revisiting migration in a disc cavity to explain the high eccentricities of warm Jupiters
- A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)
- Dynamics of Rotation of Super-Earths
- Constraining tidal dissipation in F-type main-sequence stars: the case of CoRoT-11
- Zodiacal Exoplanets in Time. XI. The Orbit and Radiation Environment of the Young M Dwarf-Hosted Planet K2-25b
- An ultra-short period rocky super-Earth orbiting the G2-star HD 80653
- Vortex stretching in self-gravitating protoplanetary discs
- Characterization of the four new transiting planets KOI-188b, KOI-195b, KOI-192b, and KOI-830b
- A hot super-Earth planet in the WASP-84 planetary system
- Tidal Dissipation in Dual-Body, Highly Eccentric, and Non-synchronously Rotating Systems: Applications to Pluto-Charon and the Exoplanet TRAPPIST-1e
- Formation of short-period planets by disk migration
- Orbital alignment of the eccentric warm Jupiter TOI-677 b
- The Influence of Tidal Heating on the Habitability of Planets Orbiting White Dwarfs
- Very Low-mass Stellar and Substellar Companions to Solar-like Stars from MARVELS II: A Short-period Companion Orbiting an F Star with Evidence of a Stellar Tertiary And Significant Mutual Inclination
- Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3
- The Stability and Dynamics of Planets in Tight Binary Systems
- The ultra-hot-Jupiter KELT-16 b: Dynamical Evolution and Atmospheric Properties
- A test of the high-eccentricity migration scenario for close-in planets
- EPIC 203868608: A low-mass quadruple star system in the Upper Scorpius OB association
- Thermal Tides in Short Period Exoplanets
- TOI-837 b: characterisation, formation and evolutionary history of an infant warm Saturn-mass planet
- The inflated, eccentric warm Jupiter TOI-4914 b orbiting a metal-poor star, and the hot Jupiters TOI-2714 b and TOI-2981 b
- Potential for life to exist and be detected on Earth-like planets orbiting white dwarfs
- In-depth characterization of the Kepler-10 three-planet system with HARPS-N radial velocities and Kepler transit timing variations
- Accretion of Planetary Material onto Host Stars
- TESS and HARPS-N unveil two planets transiting TOI-1453. A super-Earth and one of the lowest mass sub-Neptunes
- An alternative stable solution for the Kepler-419 system, obtained with the use of a genetic algorithm
- The GAPS programme at TNG LXXI. A sub-Neptune suitable for atmospheric characterization in a multiplanet and mutually inclined system orbiting the bright K dwarf TOI-5789 (HIP 99452)
- How to measure tidal dissipation in long resonant chains