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Giant planets embedded in protoplanetary disks (PPDs) can create annulus density gaps around their orbits in the type-II regime, potentially responsible for the ubiquity of annular substructures observed in PPDs. Despite of substantial…

Earth and Planetary Astrophysics · Physics 2024-07-23 Yuhiko Aoyama , Xuening Bai

We present the results of planet formation N-body simulations based on a comprehensive physical model that includes planetary mass growth through mutual embryo collisions and planetesimal/boulder accretion, viscous disc evolution, planetary…

Earth and Planetary Astrophysics · Physics 2016-02-17 Gavin A. L. Coleman , Richard P. Nelson

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

Recent three-dimensional magnetohydrodynamical simulations have identified a disk wind by which gas materials are lost from the surface of a protoplanetary disk, which can significantly alter the evolution of the inner disk and the…

Earth and Planetary Astrophysics · Physics 2015-07-01 Masahiro Ogihara , Hiroshi Kobayashi , Shu-ichiro Inutsuka , Takeru K. Suzuki

Measured disk masses seem to be too low to form the observed population of planetary systems. In this context, we develop a population synthesis code in the pebble accretion scenario, to analyse the disk mass dependence on planet formation…

Earth and Planetary Astrophysics · Physics 2020-10-07 Spandan Dash , Yamila Miguel

(Abridged) Observational surveys of entire star-forming regions have provided evidence of power-law correlations between the disc properties and the stellar mass, especially the disc mass (${M_d \propto M_*}^{\lambda_m}$) and the accretion…

We investigate the evolution of protoplanets with different masses embedded in an accretion disk, via global fully three-dimensional hydrodynamical simulations. We consider a range of planetary masses extending from one and a half Earth's…

Astrophysics · Physics 2016-06-20 Gennaro D'Angelo , Willy Kley , Thomas Henning

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

The formation of astrophysical objects of different nature and size, from black holes to gaseous giant planets, involves a disk-jet system, where the disk drives the mass accretion onto a central compact object and the jet is a fast…

Solar and Stellar Astrophysics · Physics 2022-09-02 Luca Moscadelli , Alberto Sanna , Henrik Beuther , André Oliva , Rolf Kuiper

It has been considered that large satellites around gas planets form in-situ circumplanetary discs (CPDs). However, dust particles supplied into CPDs drift toward the central planets before they grow into satellitesimals, building blocks of…

Earth and Planetary Astrophysics · Physics 2022-12-12 Yuhito Shibaike , Shoji Mori

We present N-body simulations of planetary system formation in thermally-evolving, viscous disc models. The simulations incorporate type I migration (including corotation torques and their saturation), gap formation, type II migration, gas…

Earth and Planetary Astrophysics · Physics 2015-06-22 Gavin A. L. Coleman , Richard P. Nelson

We propose a pebble-driven planet formation scenario to form giant planets with high multiplicity and large orbital distances in the early gas disk phase. We perform N-body simulations to investigate the growth and migration of low-mass…

Earth and Planetary Astrophysics · Physics 2020-06-24 John Wimarsson , Beibei Liu , Masahiro Ogihara

Planets form in protoplanetary discs. Their masses, distribution, and orbits sensitively depend on the structure of the protoplanetary discs. However, what sets the initial structure of the discs in terms of mass, radius and accretion rate…

Astrophysics of Galaxies · Physics 2020-03-11 Patrick Hennebelle , Benoît Commerçon , Yueh-Ning Lee , Sébastien Charnoz

The thermal structure and evolution of protoplanetary disks play a crucial role in planet formation. In addition to stellar irradiation, accretion heating is also thought to significantly affect the disk thermal structure and planet…

Earth and Planetary Astrophysics · Physics 2025-05-21 Shoji Mori , Masanobu Kunitomo , Masahiro Ogihara

Observations indicate that stars generally lose their protoplanetary discs on a timescale of about 5 Myr. Which mechanisms are responsible for the disc dissipation is still debated. Here we investigate the movement through an ambient medium…

Solar and Stellar Astrophysics · Physics 2017-06-21 T. P. G. Wijnen , O. R. Pols , F. I. Pelupessy , S. Portegies Zwart

Protoplanetary discs exhibit a diversity of gaps and rings of dust material, believed to be a manifestation of pressure maxima commonly associated with an ongoing planet formation and several other physical processes. Hydrodynamic disc…

Earth and Planetary Astrophysics · Physics 2022-03-18 Geoffrey Andama , Nelson Ndugu , Simon . K. Anguma , Edward Jurua

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

Super-Earths are found in tighter orbits than the Earth's around more than one third of main sequence stars. It has been proposed that super-Earths are scaled-up terrestrial planets that formed similarly, through mutual accretion of…

Earth and Planetary Astrophysics · Physics 2019-07-10 Michiel Lambrechts , Alessandro Morbidelli , Seth A. Jacobson , Anders Johansen , Bertram Bitsch , Andre Izidoro , Sean N. Raymond

This paper continues an earlier study of giant planet migration, examining the effect of planet mass and disc viscosity on the migration rate. We find that the migration rate of a gap-opening planet varies systematically with the planet's…

Astrophysics · Physics 2008-07-04 Richard G. Edgar

We study the structure and dynamics of the gap created by a protoplanet in an accretion disc. The hydrodynamic equations for a flat, two-dimensional, non-selfgravitating protostellar accretion disc with an embedded, Jupiter sized…

Astrophysics · Physics 2010-03-01 Willy Kley