Forming Close-in Earth-like Planets Via a Collision-merger Mechanism in Late-stage Planet Formation

@article{Ji2011FormingCE,
  title={Forming Close-in Earth-like Planets Via a Collision-merger Mechanism in Late-stage Planet Formation},
  author={Jianghui Ji and Sheng Jin and China Purple Mountain Observatory and Cas Department of Astrophysics and School of Cosmic Physics and University of Wales and Australia Graduate School of Chinese Academy of Sciences},
  journal={The Astrophysical Journal},
  year={2011},
  volume={727}
}
The large number of exoplanets found to orbit their host stars in very close orbits have significantly advanced our understanding of the planetary formation process. It is now widely accepted that such short-period planets cannot have formed in situ, but rather must have migrated to their current orbits from a formation location much farther from their host star. In the late stages of planetary formation, once the gas in the protoplanetary disk has dissipated and migration has halted, gas… Expand

Figures from this paper

Debris disks as signposts of terrestrial planet formation
There exists strong circumstantial evidence from their eccentric orbits that most of the known extra-solar planetary systems are the survivors of violent dynamical instabilities. Here we explore theExpand
A tale of planet formation: from dust to planets
The characterization of exoplanets and their birth protoplanetary disks have enormously advanced in the last decade. Benefited from that, our global understanding of the planet formation has beenExpand
PREDICTING THE CONFIGURATION OF A PLANETARY SYSTEM: KOI-152 OBSERVED BY KEPLER
The recent Kepler discovery of KOI-152 reveals a system of three hot super-Earth candidates that are in or near a 4:2:1 mean motion resonance. It is unlikely that they formed in situ; the planetsExpand
Terrestrial planet formation under migration: systems near the 4:2:1 mean motion resonance
In this work, we investigate extensively the formation of near 4:2:1 mean motion resonance (MMR) configurations by performing two sets of N-body simulations. We model the eccentricity damping, gasExpand
Forming short-period earth-like planets via a collision-merger scenario
Abstract We present a new formation mechanism to produce short-period Earth-like planets in the late stage of planet formation, through a collision-merger scenario. In this scenario, a planetaryExpand
Planetary population synthesis coupled with atmospheric escape: a statistical view of evaporation
We apply hydrodynamic evaporation models to different synthetic planet populations that were obtained from a planet formation code based on the core-accretion paradigm. We investigated the evolutionExpand
Tidal evolution of the Kepler-10 system
We investigate by numerical methods the tidal evolution of the Kepler-10 system, which consists of an inner rocky planet and an outer terrestrial planet, by considering various initial eccentricityExpand
Terrestrial planet formation in inclined systems: application to the OGLE‐2006‐BLG‐109L system
In this paper, we carry out an extensive investigation of terrestrial planetary formation in inclined planetary systems at the late stage. We consider the OGLE-2006-BLG-109L system as a prototype. InExpand
Tidal Evolution of the Kepler Candidate Two-planet Systems☆☆☆
Abstract The tidal evolution of ten Kepler candidate two-planet systems is investigated by using the general secular perturbation theory, and then a general picture of tidal evolution for theseExpand
Tidal evolution of exo-planetary systems: WASP-50, GJ 1214 and CoRoT-7
We perform numerical simulations to investigate tidal evolution of two single-planet systems, that is, WASP-50 and GJ 1214 and a two-planet system CoRoT-7. The results of orbital evolution show thatExpand
...
1
2
...

References

SHOWING 1-10 OF 40 REFERENCES
Planetary Migration: What Does It Mean for Planet Formation?
Gravitational interactions between a planet and its protoplanetary disk change the planet’s orbit, causing the planet to migrate toward or away from its star. Migration rates are poorly constrainedExpand
The origin and nature of Neptune-like planets orbiting close to solar type stars
Abstract The sample of known exoplanets is strongly biased to masses larger than the ones of the giant gaseous planets of the Solar System. Recently, the discovery of two extrasolar planets ofExpand
Origin and Ubiquity of Short-Period Earth-like Planets: Evidence for the Sequential Accretion Theory of Planet Formation
The formation of gas giant planets is assumed to be preceded by the emergence of solid cores in the conventional sequential accretion paradigm. This hypothesis implies that the presence of Earth-likeExpand
Observable consequences of planet formation models in systems with close-in terrestrial planets
To date, two planetary systems have been discovered with close-in, terrestrial-mass planets (� 5‐10 M ⊕ ). Many more such discoveries are anticipated in the coming years with radial velocity andExpand
Planet Formation around Stars of Various Masses: Hot Super-Earths
We consider trends resulting from two formation mechanisms for short-period super-Earths: planet-planet scattering and migration. We model scenarios where these planets originate near the snow lineExpand
Simulations for terrestrial planets formation
In this paper, the formation of terrestrial planets in the late stage of planetary formation is investigated using the two-planet model. At that time, the protostar formed for about 3 Ma and the gasExpand
Exotic Earths: Forming Habitable Worlds with Giant Planet Migration
TLDR
This simulation of terrestrial planet growth during and after giant planet migration is applied to close-in giant planets thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Expand
Gravitational scattering as a possible origin for giant planets at small stellar distances
TLDR
An alternative model for planetary migration that can account for two large orbital eccentricities of giant planets that are difficult to reconcile with a tidal-linkage model is described. Expand
Migration and the Formation of Systems of Hot Super-Earths and Neptunes
The existence of extrasolar planets with short orbital periods suggests that planetary migration induced by tidal interaction with the protoplanetary disk is important. Cores and terrestrial planetsExpand
Toward a Deterministic Model of Planetary Formation. I. A Desert in the Mass and Semimajor Axis Distributions of Extrasolar Planets
In an attempt to develop a deterministic theory for planet formation, we examine the accretion of cores of giant planets from planetesimals, gas accretion onto the cores, and their orbital migration.Expand
...
1
2
3
4
...