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Saturn formed beyond the snow line in the primordial solar nebula that made it possible for it to accrete a large mass. Disk instability and core accretion models have been proposed for Saturn's formation, but core accretion is favored on…

Earth and Planetary Astrophysics · Physics 2016-10-05 Sushil K. Atreya , Aurelien Crida , Tristan Guillot , Jonathan I. Lunine , Nikku Madhusudhan , Olivier Mousis

The standard model for giant planet formation is based on the accretion of solids by a growing planetary embryo, followed by rapid gas accretion once the planet exceeds a so-called critical mass. The dominant size of the accreted solids…

Traditional thermal evolution models of giant planets employ arbitrary initial conditions selected more for computational expediency than physical accuracy. Since the initial conditions are eventually forgotten by the evolving planet, this…

Astrophysics · Physics 2008-11-26 M. S. Marley , J. J. Fortney , O. Hubickyj , P. Bodenheimer , J. J. Lissauer

[Abridged] The formation of Jupiter is modeled via core-nucleated accretion, and the planet's evolution is simulated up to the present epoch. The growth from a small embryo until gas accretion overtakes solids' accretion was presented by…

Earth and Planetary Astrophysics · Physics 2020-10-16 Gennaro D'Angelo , Stuart J. Weidenschilling , Jack J. Lissauer , Peter Bodenheimer

We used {\sl \textup{ab initio}} molecular dynamics simulations to calculate the high-pressure melting temperatures of the three potential core components. The planetary adiabats were obtained by solving the hydrostatic equations in a…

Earth and Planetary Astrophysics · Physics 2019-10-30 S. Mazevet , R. Musella , F. Guyot

Atmospheric compositions preserve the history of planet formation processes. Jupiter has the remarkable feature of being uniformly enriched in various elements compared to the Sun, including highly volatile elements such as nitrogen and…

Earth and Planetary Astrophysics · Physics 2025-03-06 Kanon Nakazawa , Satoshi Okuzumi

Complex organic molecules are key markers of molecular diversity, and their formation conditions in protoplanetary disks remain an active area of research. These molecules have been detected on a variety of celestial bodies, including icy…

Earth and Planetary Astrophysics · Physics 2026-02-20 T. Benest Couzinou , A. Amsler Moulanier , O. Mousis

Hot Jupiters, giant extrasolar planets with orbital periods shorter than ~10 days, have long been thought to form at large radial distances, only to subsequently experience long-range inward migration. Here, we propose that in contrast with…

Earth and Planetary Astrophysics · Physics 2016-10-05 Konstantin Batygin , Peter H. Bodenheimer , Gregory P. Laughlin

The favored theoretical explanation for giant planet formation -- in both our solar system and others -- is the core accretion model (although it still has some serious difficulties). In this scenario, planetesimals accumulate to build up…

Astrophysics · Physics 2016-08-30 Gregory Laughlin , Peter Bodenheimer , Fred C. Adams

Recent formation and structure models of Jupiter suggest that the planet can have composition gradients and not be fully convective (adiabatic). This possibility directly affects our understanding of Jupiter's bulk composition and origin.…

Earth and Planetary Astrophysics · Physics 2018-03-14 A. Vazan , R. Helled , T. Guillot

The elemental compositions of planet hosting stars serve as proxies for the primordial compositions of the protoplanetary disks within which the planets form. The temperature profile of the disk governs the condensation fronts of various…

Earth and Planetary Astrophysics · Physics 2017-02-01 John M. Brewer , Debra A. Fischer , Nikku Madhusudhan

It has been suggested that Jupiter's fuzzy core could be a result of a giant impact. Here, we investigate the expected impact conditions from N-body simulations. We then use state-of-the-art SPH simulations to investigate the results of…

Earth and Planetary Astrophysics · Physics 2025-05-26 Thomas Meier , Christian Reinhardt , Sho Shibata , Simon Müller , Joachim Stadel , Ravit Helled

Giant planets are thought to have cores in their deep interiors, and the division into a heavy-element core and hydrogen-helium envelope is applied in both formation and structure models. We show that the primordial internal structure…

Earth and Planetary Astrophysics · Physics 2017-05-03 Ravit Helled , David Stevenson

We present calculations of the early stages of the formation of Jupiter via core nucleated accretion and gas capture. The core begins as a seed body of about 350 kilometers in radius and orbits in a swarm of planetesimals whose initial…

Earth and Planetary Astrophysics · Physics 2016-06-20 Gennaro D'Angelo , Stuart J. Weidenschilling , Jack J. Lissauer , Peter Bodenheimer

We study quasi-static atmospheres of accreting protoplanetary cores for different opacity behaviors and realistic planetesimal accretion rates in various parts of protoplanetary nebula. Atmospheres segregate into those having outer…

Astrophysics · Physics 2008-11-26 Roman Rafikov

The Juno mission has revolutionized and challenged our understanding of Jupiter. As Juno transitioned to its extended mission, we review the major findings of Jupiter's internal structure relevant to understanding Jupiter's formation and…

(Abridged) The chemical composition of planetary atmospheres has long been thought to store information regarding where and when a planet accretes its material. Predicting this chemical composition theoretically is a crucial step in linking…

Earth and Planetary Astrophysics · Physics 2020-10-28 Alex J. Cridland , Ewine F. van Dishoeck , Matthew Alessi , Ralph E. Pudritz

We use a population synthesis model that includes pebbles and gas accretion, planetary migration, and a simplified chemistry scheme to study the formation of hot-Jupiters. Models have been proposed that these planets can either originate…

Earth and Planetary Astrophysics · Physics 2017-03-22 Mohamad Ali-Dib

The effects of gas pressure gradients on the motion of solid grains in the solar nebula substantially enhances the efficiency of forming protoplanetary cores in the standard core accretion model in 'hybrid' scenarios for gas/ice giant…

Astrophysics · Physics 2009-11-10 Thayne Currie

Motivated by recent spectroscopic observations suggesting that atmospheres of some extrasolar giant-planets are carbon-rich, i.e. carbon/oxygen ratio (C/O) $\ge$ 1, we find that the whole set of compositional data for Jupiter is consistent…

Earth and Planetary Astrophysics · Physics 2015-06-04 Olivier Mousis , Jonathan I. Lunine , Nikku Madhusudhan , Torrence V. Johnson