Terrestrial Planet Formation in Extra-Solar Planetary Systems
arXiv:0801.2560 · doi:10.1017/S1743921308016645
Abstract
Terrestrial planets form in a series of dynamical steps from the solid component of circumstellar disks. First, km-sized planetesimals form likely via a combination of sticky collisions, turbulent concentration of solids, and gravitational collapse from micron-sized dust grains in the thin disk midplane. Second, planetesimals coalesce to form Moon- to Mars-sized protoplanets, also called "planetary embryos". Finally, full-sized terrestrial planets accrete from protoplanets and planetesimals. This final stage of accretion lasts about 10-100 Myr and is strongly affected by gravitational perturbations from any gas giant planets, which are constrained to form more quickly, during the 1-10 Myr lifetime of the gaseous component of the disk. It is during this final stage that the bulk compositions and volatile (e.g., water) contents of terrestrial planets are set, depending on their feeding zones and the amount of radial mixing that occurs. The main factors that influence terrestrial planet formation are the mass and surface density profile of the disk, and the perturbations from giant planets and binary companions if they exist. Simple accretion models predicts that low-mass stars should form small, dry planets in their habitable zones. The migration of a giant planet through a disk of rocky bodies does not completely impede terrestrial planet growth. Rather, "hot Jupiter" systems are likely to also contain exterior, very water-rich Earth-like planets, and also "hot Earths", very close-in rocky planets. Roughly one third of the known systems of extra-solar (giant) planets could allow a terrestrial planet to form in the habitable zone.
19 pages, 5 figures. To appear in the proceedings of IAU Symposium 249: Exoplanets: Detection, Formation and Dynamics, held in Suzhou, China, Oct 22-26 2007
References in corpus (76)
- Disk Frequencies and Lifetimes in Young Clusters
- The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
- Rapid planetesimal formation in turbulent circumstellar discs
- Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits
- Towards a Deterministic Model of Planetary Formation I: a Desert in the Mass and Semi Major Axis Distributions of Extra Solar Planets
- Catalog of Nearby Exoplanets
- Circumstellar Dust Disks in Taurus-Auriga: The Submillimeter Perspective
- On detecting terrestrial planets with timing of giant planet transits
- DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
- Mass-Radius Relationships for Solid Exoplanets
- Models of Giant Planet formation with migration and disc evolution
- Dust coagulation in protoplanetary disks: a rapid depletion of small grains
- On the width and shape of gaps in protoplanetary disks
- Habitable planets around the star Gl 581?
- Towards a deterministic model of planetary formation. III. Mass distribution of short-period planets around stars of various masses
- Planetesimal Formation by Gravitational Instability
- Making other Earths: Dynamical Simulations of Terrestrial Planet Formation and Water Delivery
- High Resolution Submillimeter Constraints on Circumstellar Disk Structure
- High-resolution simulations of the final assembly of Earth-like planets 1: terrestrial accretion and dynamics
- Migration and the formation of systems of hot super-Earths and Neptunes
- The Galactic Habitable Zone and the Age Distribution of Complex Life in the Milky Way
- Models of the in situ formation of detected extrasolar giant planets
- A New Family of Planets ? "Ocean Planets"
- Orbital Evolution and Migration of Giant Planets: Modeling Extrasolar Planets
- An Assessment of Dynamical Mass Constraints on Pre-Main Sequence Evolutionary Tracks
- The HARPS search for southern extra-solar planets XI. Super-Earths (5 & 8 M_Earth) in a 3-planet system
- Detailed Models of super-Earths: How well can we infer bulk properties?
- Orbital Migration and Mass Accretion of Protoplanets in 3D Global Computations with Nested Grids
- Analytical protostellar disk models 1: the effect of internal dissipation and surface irradiation on the structure of disks and the location of the snow line around Sun-like stars
- The Galactic Habitable Zone I. Galactic Chemical Evolution
- Exotic Earths: Forming Habitable Worlds with Giant Planet Migration
- Planet formation and migration
- A decreased probability of habitable planet formation around low-mass stars
- Exploring brown dwarf disks: A 1.3 mm survey in Taurus
- Final Stages of Planet Formation
- Planet migration and gap formation by tidally-induced shocks
- On the migration of protogiant solid cores
- Observable Consequences of Planet Formation Models in Systems with Close-in Terrestrial Planets
- Terrestrial Planet Formation I. The Transition from Oligarchic Growth to Chaotic Growth
- High-resolution simulations of the final assembly of Earth-like planets 2: water delivery and planetary habitability
- Dynamical Habitability of Known Extrasolar Planetary Systems
- Formation of Earth-like Planets During and After Giant Planet Migration
- Particle Pile-ups and Planetesimal Formation
- Relative velocities among accreting planetesimals in binary systems: the circumprimary case
- Terrestrial Planet Formation Around Individual Stars Within Binary Star Systems
- Formation and Evolution of Planetary Systems: Upper Limits to the Gas Mass in Disks Around Sun-like Stars
- Secular Instability and Planetesimal Formation in the Dust Layer
- The ELODIE survey for northern extra-solar planets III. Three planetary candidates detected with ELODIE
- On Gas-Drag Induced Rapid Migration of Solids in a Non-Uniform Solar Nebula
- Terrestrial Planet Formation in Disks with Varying Surface Density Profiles
- Can photo-evaporation trigger planetesimal formation?
- Terrestrial Planet Formation Surrounding Close Binary Stars
- Planets Formed in Habitable Zones of M Dwarf Stars Probably are Deficient in Volatiles
- Relative velocities among accreting planetesimals in binary systems: the circumbinary case
- Origin and Ubiquity of Short-Period Earth-like Planets: Evidence for the Sequential-Accretion Theory of Planet Formation
- Predicting Planets in Known Extra-Solar Planetary Systems I: Test Particle Simulations
- Could we identify hot Ocean-Planets with CoRoT, Kepler and Doppler velocimetry?
- On the formation of terrestrial planets in hot-Jupiter systems
- Prospects for Extrasolar "Earths" in Habitable Zones
- A reduced efficiency of terrestrial planet formation following giant planet migration
- Oligarchic and giant impact growth of terrestrial planets in the presence of gas giant planet migration
- Predicting Planets in Known Extra-Solar Planetary Systems III: Forming Terrestrial Planets
- Effects of Type I Migration on Terrestrial Planet Formation
- The Search for other Earths: limits on the giant planet orbits that allow habitable terrestrial planets to form
- The formation and habitability of terrestrial planets in the presence of hot jupiters
- Habitable Planet Formation in Binary-Planetary Systems
- Predicting Planets in Known Extra-Solar Planetary Systems II: Testing for Saturn-mass Planets
- The growth of planetary embryos: orderly, runaway, or oligarchic?
- A Minimum-Mass Extrasolar Nebula
- New Worlds on the Horizon: Earth-Sized Planets Close to Other Stars
- Survival of Terrestrial Planets in the Presence of Giant Planet Migration
- The effect of type I migration on the formation of terrestrial planets in hot-Jupiter systems
- Predictions for the correlation between giant and terrestrial extrasolar planets in dynamically evolved systems
- Distribution of Circumstellar Disk Masses in the Young Cluster NGC 2024
- Looking for Giant Earths in the HD 209458 System: A Search for Transits in MOST Space-based Photometry
- Pumping of a Planetesimal Disc by a Rapidly Migrating Planet