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Related papers: Toward a Deterministic Model of Planetary Formatio…

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We consider the inner $\sim$ AU of a protoplanetary disk (PPD), at a stage where angular momentum transport is driven by the mixing of a radial magnetic field into the disk from a T-Tauri wind. Because the radial profile of the imposed…

Earth and Planetary Astrophysics · Physics 2015-12-23 Matthew Russo , Christopher Thompson

Our understanding of the process of terrestrial planet formation has grown markedly over the past 20 years, yet key questions remain. This review begins by first addressing the critical, earliest stage of dust coagulation and concentration.…

Earth and Planetary Astrophysics · Physics 2024-11-07 Matthew S. Clement , Andre Izidoro , Sean N. Raymond , Rogerio Deienno

(Abridged) We consider models of gas giant planets forming in protoplanetary disks consisting of solid cores with gaseous envelopes in contact with their critical Hill spheres while accreting gas from the surrounding disk.We suppose the…

Astrophysics · Physics 2009-11-10 John C. B. Papaloizou , Richard P. Nelson

Waves reflected by the inner edge of a protoplanetary disk are shown to significantly modify Type I migration, even allowing the trapping of planets near the inner disk edge for small planets in a range of disk parameters. This may inform…

Earth and Planetary Astrophysics · Physics 2011-10-25 David Tsang

We present numerical simulations of terrestrial planet formation that examine the growth continuously from planetesimals to planets in the inner Solar System. Previous studies show that the growth will be inside-out, but it is still common…

Earth and Planetary Astrophysics · Physics 2019-08-05 Kevin J. Walsh , Harold F. Levison

The formation of gas giant planets must occur during the first few Myr of a star's lifetime, when the protoplanetary disc still contains sufficient gas to be accreted onto the planetary core. The majority of protoplanetary discs are exposed…

Earth and Planetary Astrophysics · Physics 2022-06-08 Andrew J. Winter , Thomas J. Haworth , Gavin A. L. Coleman , Sergei Nayakshin

Population synthesis studies into planet formation have suggested that distributions consistent with observations can only be reproduced if the actual Type I migration timescale is at least an order of magnitude longer than that deduced…

Earth and Planetary Astrophysics · Physics 2016-04-15 Takanori Sasaki , Toshikazu Ebisuzaki

Context: Planetary embryos can continue to grow by pebble accretion until they become giant planet cores. Simultaneously, these embryos mutually interact and also migrate due to torques arising from the protoplanetary disk. Aims: Our aim is…

Earth and Planetary Astrophysics · Physics 2017-10-25 Ondřej Chrenko , Miroslav Brož , Michiel Lambrechts

We present radiation hydrodynamic simulations in which binary planets form by close encounters in a system of several super-Earth embryos. The embryos are embedded in a protoplanetary disk consisting of gas and pebbles and evolve in a…

Earth and Planetary Astrophysics · Physics 2018-12-12 Ondřej Chrenko , Miroslav Brož , David Nesvorný

Dwarf stars are believed to have small protostar disk where planets may grow up. During the planet formation stage, embryos undergoing type I migration are expected to be stalled at inner edge of magnetic inactive disk ($a_{\rm crit} \sim…

Earth and Planetary Astrophysics · Physics 2015-05-20 Su Wang , Ji-Lin Zhou

The evolution of protoplanetary discs embedded in stellar clusters depends on the age and the stellar density in which they are embedded. Stellar clusters of young age and high stellar surface density destroy protoplanetary discs by…

Earth and Planetary Astrophysics · Physics 2017-12-20 Nelson Ndugu , Bertram Bitsch , Edward Jurua

Global models of planet formation tend to begin with an initial set of planetary embryos for the sake simplicity. While this approach gives valuable insights on the evolution of the initial embryos, the initial distribution itself is a bold…

Earth and Planetary Astrophysics · Physics 2022-10-26 Oliver Voelkel , Hubert Klahr , Christoph Mordasini , Alexandre Emsenhuber

Planet formation models begin with proto-embryos and planetesimals already fully formed, missing out a crucial step, the formation of planetesimals/proto-embryos. In this work, we include prescriptions for planetesimal and proto-embryo…

Earth and Planetary Astrophysics · Physics 2021-07-14 Gavin A. L. Coleman

This series of papers investigates the early stages of planet formation by modeling the evolution of the gas and solid content of protostellar disks from the early T Tauri phase until complete dispersal of the gas. In this first paper, I…

Astrophysics · Physics 2009-11-13 P. Garaud

Planet traps are necessary to prevent forming planets from falling onto their host star by type I migration. Surface mass density and temperature gradient irregularities favor the apparition of traps and deserts. Such features are found at…

Earth and Planetary Astrophysics · Physics 2016-05-11 Kévin Baillié , Sébastien Charnoz , Éric Pantin

Giant planet embryos are believed to be spawned by gravitational instability in massive extended (R ~ 100 AU) protostellar discs. In a recent paper we have shown that dust can sediment inside the embryos, as argued earlier by Boss (1998) in…

Earth and Planetary Astrophysics · Physics 2015-05-19 Sergei Nayakshin

Firstly, we study the final masses of giant planets growing in protoplanetary disks through capture of disk gas, by employing an empirical formula for the gas capture rate and a shallow disk gap model, which are both based on hydrodynamical…

Earth and Planetary Astrophysics · Physics 2016-06-01 Takayuki Tanigawa , Hidekazu Tanaka

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

Planet formation is inherently linked to protoplanetary disc evolution, which recent developments suggest is driven by magnetised winds rather than turbulent viscosity. We study planet formation in magnetohydrodynamic (MHD) wind-driven…

Earth and Planetary Astrophysics · Physics 2026-01-07 Jesse Weder , Christoph Mordasini

In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial conditions that allowed their formation.…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yamila Miguel , Octavio M. Guilera , Adrián Brunini