Migration and the Formation of Systems of Hot Super-Earths and Neptunes

@article{Terquem2007MigrationAT,
  title={Migration and the Formation of Systems of Hot Super-Earths and Neptunes},
  author={Caroline E.J.M.L.J. Terquem and John C. B. Papaloizou},
  journal={The Astrophysical Journal},
  year={2007},
  volume={654},
  pages={1110-1120}
}
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 planets may undergo migration as they form. In this paper we investigate the evolution of a population of cores with initial masses in the range 0.1-1 M⊕ embedded in a disk. Mutual interactions lead to orbit crossing and mergers, so that the cores grow during their evolution. Interaction with the disk leads… 

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References

SHOWING 1-10 OF 37 REFERENCES
Dynamical relaxation and massive extrasolar planets
Following the suggestion of Black that some massive extrasolar planets may be associated with the tail of the distribution of stellar companions, we investigate a scenario in which 5 < N < 100
On disc driven inward migration of resonantly coupled planets with application to the system around GJ876
We consider two protoplanets gravitationally interacting with each other and a protoplanetary disc. The two planets orbit interior to a tidally maintained disc cavity while the disc interaction
On the migration-induced resonances in a system of two planets with masses in the Earth mass range
We investigate orbital resonances expected to arise when a system of two planets, with masses in the range 1–4 M⊕, undergoes convergent migration while embedded in a section of gaseous disc where the
On the migration of a system of protoplanets
ABSTRA C T The evolution of a system consisting of a protoplanetary disc with two embedded Jupitersized planets is studied numerically. The disc is assumed to be flat and non-self-gravitating; this
Effects of Type I Migration on Terrestrial Planet Formation
Planetary embryos embedded in a gas disk suffer a decay in semimajor axis—type I migration—due to the asymmetric torques produced by the interior and exterior wakes raised by the body. This presents
The interaction of giant planets with a disc with MHD turbulence – IV. Migration rates of embedded protoplanets
We present the results of global cylindrical disc simulations and local shearing box simulations of protoplanets interacting with a disc undergoing magnetohydrodynamic (MHD) turbulence. The specific
On the orbital evolution and growth of protoplanets embedded in a gaseous disc
ABSTRA C T We present a new computation of the linear tidal interaction of a protoplanetary core with a thin gaseous disc in which it is fully embedded. For the first time a discussion of the orbital
On the evolution of multiple protoplanets embedded in a protostellar disc
Context. Theory predicts that low mass protoplanets in a laminar protostellar disc will migrate into the central star prior to disc dispersal. It is known that protoplanets on orbits with
On the orbital evolution of low mass protoplanets in turbulent, magnetised disks
We present the results of MHD simulations of low mass protoplanets interacting with turbulent, magnetised protostellar disks. We calculate the orbital evolution of planetesimals and protoplanets with
...
...