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Related papers: Migration and giant planet formation

200 papers

Several planetary systems are known to host multiple giant planets. However, when two giant planets are accreting from the same disk, it is unclear what effect the presence of the second planet has on the gas accretion process of both…

Earth and Planetary Astrophysics · Physics 2023-01-25 Camille Bergez-Casalou , Bertram Bitsch , Sean N. Raymond

The observed lifetimes of gaseous protoplanetary discs place strong constraints on gas and ice giant formation in the core accretion scenario. The approximately 10-Earth-mass solid core responsible for the attraction of the gaseous envelope…

Earth and Planetary Astrophysics · Physics 2015-06-05 Michiel Lambrechts , Anders Johansen

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

Observations of structure in circumstellar debris discs provide circumstantial evidence for the presence of massive planets at large (several tens of au) orbital radii, where the timescale for planet formation via core accretion is…

Astrophysics · Physics 2009-11-10 Dimitri Veras , Philip J. Armitage

In the core accretion scenario, gas giant planets are formed form solid cores with several Earth masses via gas accretion. We investigate the formation of such cores via collisional growth from kilometer-sized planetesimals in turbulent…

Earth and Planetary Astrophysics · Physics 2018-08-08 Hiroshi Kobayashi , Hidekazu Tanaka

We present a review of the standard paradigm for giant planet formation, the core accretion theory. After an overview of the basic concepts of this model, results of the original implementation are discussed. Then, recent improvements and…

Astrophysics · Physics 2007-10-31 Christoph Mordasini , Yann Alibert , Willy Benz , Dominique Naef

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

Gas giant planets may form early-on during the evolution of protostellar discs, while these are relatively massive. We study how Jupiter-mass planet-seeds (termed protoplanets) evolve in massive, but gravitationally stable (Q>1.5), discs…

Earth and Planetary Astrophysics · Physics 2018-04-18 Dimitris Stamatellos , Shu-ichiro Inutsuka

The large number of detected giant exoplanets offers the opportunity to improve our understanding of the formation mechanism, evolution, and interior structure of gas giant planets. The two main models for giant planet formation are core…

Gas-giant planets, like Jupiter and Saturn, acquire massive gaseous envelopes during the approximately 3 Myr-long lifetimes of protoplanetary discs. In the core accretion scenario, the formation of a solid core of around 10 Earth masses…

Earth and Planetary Astrophysics · Physics 2019-09-25 Michiel Lambrechts , Elena Lega , Richard P. Nelson , Aurélien Crida , Alessandro Morbidelli

Gas giant planets are expected to accrete most of their mass via a circumplanetary disk. If the planet is unmagnetized and initially slowly rotating, it will accrete gas via a radially narrow boundary layer and rapidly spin up. Radial…

Earth and Planetary Astrophysics · Physics 2021-11-17 Jiayin Dong , Yan-Fei Jiang , Phil Armitage

Massive planets that open a gap in the accretion disk are believed to migrate with exactly the viscous speed of the disk, a regime termed type II migration. Population synthesis models indicate that standard type II migration is too rapid…

Earth and Planetary Astrophysics · Physics 2015-01-28 Christoph Dürmann , Wilhelm Kley

We describe a coagulation model that leads to the rapid formation of super-Earths and the cores of gas giant planets. Interaction of collision fragments with the gaseous disk is the crucial element of this model. The gas entrains small…

Astrophysics · Physics 2009-11-13 Scott J. Kenyon , Benjamin C. Bromley

There is evidence for the existence of massive planets at orbital radii of several hundred AU from their parent stars where the timescale for planet formation by core accretion is longer than the disc lifetime. These planets could have…

Astrophysics · Physics 2009-06-23 R. G. Martin , S. H. Lubow , J. E. Pringle , M C. Wyatt

Planets grow via the collisional accretion of small bodies in a protoplanetary disk. Such small bodies feel strong gas drag and their orbits are significantly affected by the gas flow and atmospheric structure around the planet. We…

Earth and Planetary Astrophysics · Physics 2021-08-24 Tatsuya Okamura , Hiroshi Kobayashi

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 evolution of cores with eccentricity (e)…

Astrophysics · Physics 2009-10-31 J. C. B. Papaloizou , J. D. Larwood

In the core accretion scenario of planet formation, rocky cores grow by first accreting solids until they are massive enough to accrete gas. For giant planet formation this means that a massive core must form within the lifetime of the gas…

Earth and Planetary Astrophysics · Physics 2023-06-21 Andrin Kessler , Yann Alibert

We present a statistical study of the post-formation migration of giant planets in a range of initial disk conditions. For given initial conditions we model the evolution of giant planet orbits under the influence of disk, stellar, and mass…

Astrophysics · Physics 2009-11-07 David E. Trilling , Jonathan I. Lunine , Willy Benz

One of the most challenging problems we face in our understanding of planet formation is how Jupiter and Saturn could have formed before the the solar nebula dispersed. The most popular model of giant planet formation is the so-called 'core…

Earth and Planetary Astrophysics · Physics 2015-05-14 H. F. Levison , E. Thommes , M. J. Duncan

Thanks to recent high resolution ALMA observations, there is an accumulating evidence for presence of giant planets with masses from $\sim 0.01$ Jupiter mass to a few Jupiter mass with separations up to $ 100$~AU in the annular structures…

Earth and Planetary Astrophysics · Physics 2019-06-19 S. Nayakshin , G. Dipierro , J. Szulagyi