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The wealth of observational data about Jupiter and Saturn provides strong constraints to guide our understanding of the formation of giant planets. The size of the core and the total amount of heavy elements in the envelope have been…

Astrophysics · Physics 2009-11-11 Yann Alibert , Olivier Mousis , Christoph Mordasini , Willy Benz

We calculate heavy element enrichment in a Jupiter-mass protoplanet formed by disk instability at various radial distances from the star, considering different disk masses and surface density distributions. Although the available mass for…

Earth and Planetary Astrophysics · Physics 2010-01-15 R. Helled , G. Schubert

(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

Numerical simulations show that the migration of growing planetary cores may be dominated by turbulent fluctuations in the protoplanetary disk, rather than by any mean property of the flow. We quantify the impact of this stochastic core…

Astrophysics · Physics 2009-11-10 W. K. M. Rice , Philip J. Armitage

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…

Atmospheric compositions offer valuable clues to planetary formation and evolution. Jupiter has been the most well-studied giant planet in terms of its atmosphere; however, the origin of the Jovian atmospheric composition remains a puzzle…

Earth and Planetary Astrophysics · Physics 2021-07-07 Kazumasa Ohno , Takahiro Ueda

The Core Accretion model is widely accepted as the primary mechanism for forming planets up to a few Jupiter masses. However, the formation of super-massive planets remains a subject of debate, as their formation via the Core Accretion…

Earth and Planetary Astrophysics · Physics 2024-12-10 M. Nguyen , V. Adibekyan

Recent structure models of Jupiter suggest the existence of an extended region in the deep interior with a high heavy element abundance, referred to as a dilute core. This finding has led to increased interest in modelling the formation and…

Earth and Planetary Astrophysics · Physics 2024-12-02 Jesse Polman , Christoph Mordasini

We address the issue of which broad set of initial conditions for the planet Jupiter best matches the current presence of a ``fuzzy core" of heavy elements, while at the same time comporting with measured parameters such as its effective…

Earth and Planetary Astrophysics · Physics 2024-12-18 Roberto Tejada Arevalo , Ankan Sur , Yubo Su , Adam Burrows

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

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

We provide a brief review of many aspects of the planetary physics of hot Jupiters. Our aim is to cover most of the major areas of current study while providing the reader with additional references for more detailed follow-up. We first…

Earth and Planetary Astrophysics · Physics 2021-03-17 Jonathan J. Fortney , Rebekah I. Dawson , Thaddeus D. Komacek

More than two decades ago, the Galileo probe performed in situ measurements of the composition of Jupiter's atmosphere and found that the abundances of C, N, S, P, Ar, Kr and Xe were all enriched by factors of 1.5--5.4 times their…

Earth and Planetary Astrophysics · Physics 2022-06-20 Artyom Aguichine , Olivier Mousis , Jonathan Lunine

With the recent realization that there likely are stably-stratified regions in the interiors of both Jupiter and Saturn, we construct new non-adiabatic, inhomogeneous evolutionary models with the same microphysics for each that result at…

Earth and Planetary Astrophysics · Physics 2025-01-24 Ankan Sur , Roberto Tejada Arevalo , Yubo Su , Adam Burrows

The current paradigm to explain the presence of Jupiters with small orbital periods (P $<$ 10 days; hot Jupiters) that involves their formation beyond the snow line following inward migration, has been challenged by recent works that…

Earth and Planetary Astrophysics · Physics 2018-05-09 J. Maldonado , E. Villaver , C. Eiroa

Jupiter's enhancement in nitrogen relative to hydrogen when compared to the Sun has been interpreted as evidence that its early formation occurred beyond the N$_{2}$ snowline ($\sim$ 20-40 AU). However, the rapid growth necessary to form…

Earth and Planetary Astrophysics · Physics 2022-08-30 Megan N. Barnett , Fred J. Ciesla

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

In the standard model for giant planet formation, the planetary growth begins with accretion of solids followed by a buildup of a gaseous atmosphere as more solids are accreted, and finally, by rapid accretion of gas. The interaction of the…

Earth and Planetary Astrophysics · Physics 2021-10-08 Claudio Valletta , Ravit Helled

[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

Planetesimal accretion is a key source for heavy-element enrichment in giant planets. It has been suggested that Jupiter's enriched envelope is a result of planetesimal accretion during its growth assuming it formed in a massive…

Earth and Planetary Astrophysics · Physics 2022-12-21 Sho Shibata , Ravit Helled , Hiroshi Kobayashi