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We examine the predictions of the core accretion - gas capture model concerning the efficiency of planet formation around stars with various masses. First, we follow the evolution of gas and solids from the moment when all solids are in the…

Astrophysics · Physics 2009-11-11 Kacper Kornet , Sebastian Wolf , Michal Rozyczka

According to the sequential accretion model, giant planet formation is based first on the formation of a solid core which, when massive enough, can gravitationally bind gas from the nebula to form the envelope. In order to trigger the…

Earth and Planetary Astrophysics · Physics 2015-06-11 A. Fortier , Y. Alibert , F. Carron , W. Benz , K. -M. Dittkrist

This paper constructs a theoretical framework for calculating the distribution of masses for gas giant planets forming via the core accretion paradigm. Starting with known properties of circumstellar disks, we present models for the…

Earth and Planetary Astrophysics · Physics 2021-03-10 Fred C Adams , Michael R Meyer , Arthur D Adams

We examine the accretion of cores of giant planets from planetesimals, gas accretion onto the cores, and their orbital migration. We adopt a working model for nascent protostellar disks with a wide variety of surface density distributions…

Astrophysics · Physics 2009-11-10 S. Ida , D. N. C. Lin

The formation of planets depends on the underlying protoplanetary disc structure, which influences both the accretion and migration rates of embedded planets. The disc itself evolves on time-scales of several Myr during which both…

Earth and Planetary Astrophysics · Physics 2018-02-07 Bertram Bitsch , Michiel Lambrechts , Anders Johansen

The apparent dependence of detection frequency of extrasolar planets on the metallicity of their host stars is investigated with Monte Carlo simulations using a deterministic core-accretion planet formation model. According to this model,…

Astrophysics · Physics 2017-10-18 S. Ida , D. N. C. Lin

I argue for two modes of gas giant planet formation and discuss the conditions under which each mode operates. Gas giant planets at disk radii $r>100$ AU are likely to form in situ by disk instability, while core accretion plus gas capture…

Earth and Planetary Astrophysics · Physics 2009-09-15 Aaron C. Boley

We develop a simple model for computing planetary formation based on the core instability model for the gas accretion and the oligarchic growth regime for the accretion of the solid core. In this model several planets can form…

Astrophysics · Physics 2009-11-13 Yamila Miguel , Adrian Brunini

Planet formation is directly linked to the birthing environment that protoplanetary disks provide. The disk properties determine whether a giant planet will form and how it evolves. The number of exoplanet and disk observations is…

Earth and Planetary Astrophysics · Physics 2023-11-08 Sofia Savvidou , Bertram Bitsch

We herein develop a new simple model for giant planet formation, which predicts the final mass of a giant planet born in a given disk, by adding the disk mass loss due to photoevaporation and a new type II migration formula to our previous…

Earth and Planetary Astrophysics · Physics 2020-03-25 Hidekazu Tanaka , Kiyoka Murase , Takayuki Tanigawa

We run numerical simulations to study the accretion of gas and dust grains onto gas giant planets embedded into massive protoplanetary discs. The outcome is found to depend on the disc cooling rate, planet mass, grain size and irradiative…

Earth and Planetary Astrophysics · Physics 2019-07-18 Jack Humphries , Sergei Nayakshin

In the standard model of gas giant planet formation, a large solid core (~ 10 times the Earth's mass) forms first, then accretes its massive envelope (100 or more Earth masses) of gas. However, inward planet migration due to gravitational…

Astrophysics · Physics 2009-11-11 Edward W. Thommes , Norman Murray

In the core-accretion model, gas-giant planets form solid cores which then accrete gaseous envelopes. Tidal interactions with disk gas cause a core to undergo inward type-I migration in 10^4 to 10^5 years. Cores must form faster than this…

Astrophysics · Physics 2009-11-11 J. E. Chambers

Planets form in the discs of gas and dust that surround young stars. It is not known whether gas giant planets on wide orbits form the same way as Jupiter or by fragmentation of gravitationally unstable discs. Here we show that a giant…

Earth and Planetary Astrophysics · Physics 2015-09-16 Dimitris Stamatellos

The formation history of Jupiter has been of interest due to its ability to shape the solar system's history. Yet little attention has been paid to the formation and growth of Saturn and the other giant planets. Here, we explore the…

Earth and Planetary Astrophysics · Physics 2024-07-31 Anuja Raorane , Ramon Brasser , Soko Matsumura , Tommy Chi Ho Lau , Man Hoi Lee , Audrey Bouvier

During the late stage of planet formation when Mars-size cores appear, interactions among planetary cores can excite their orbital eccentricities, speed their merges and thus sculpture the final architecture of planet systems. This series…

Earth and Planetary Astrophysics · Physics 2015-03-13 Huigen Liu , Ji-lin Zhou , S. Wang

We analyze the orbital and mass evolution of planets that undergo run-away gas accretion by means of 2D and 3D hydrodynamic simulations. The disk torque distribution per unit disk mass as a function of radius provides an important…

Astrophysics · Physics 2008-09-18 Gennaro D'Angelo , Stephen H. Lubow

Gas giant planets play a fundamental role in shaping the orbital architecture of planetary systems and in affecting the delivery of volatile materials to terrestrial planets in the habitable zones. Current theories of gas giant planet…

Earth and Planetary Astrophysics · Physics 2010-06-30 Gennaro D'Angelo , Richard H. Durisen , Jack J. Lissauer

We address two outstanding issues in the sequential accretion scenario for gas giant planet formation, the retention of dust grains in the presence of gas drag and that of cores despite type I migration. The efficiency of these processes is…

Astrophysics · Physics 2009-11-13 Shigeru Ida , D. N. C. Lin

We compare the planet-to-star mass-ratio distribution measured by gravitational microlensing to core accretion theory predictions from population synthesis models. The core accretion theory's runaway gas accretion process predicts a dearth…

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