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Turbulence is ubiquitous in Solar System planetary atmospheres. In hot Jupiter atmospheres, the combination of moderately slow rotation and thick pressure scale height may result in dynamical weather structures with unusually large,…

Astrophysics · Physics 2009-11-13 Emily Rauscher , Kristen Menou , James Y-K. Cho , Sara Seager , Brad Hansen

We present a simplified model to study the orbital evolution of a young hot Jupiter inside the magnetospheric cavity of a proto-planetary disk. The model takes into account the disk locking of stellar spin as well as the tidal and magnetic…

Earth and Planetary Astrophysics · Physics 2014-11-20 Shih-Hsin Chang , Pin-Gao Gu , Peter Bodenheimer

We investigate the formation of multiple-planet systems in the presence of a hot Jupiter using extended N-body simulations that are performed simultaneously with semi-analytic calculations. Our primary aims are to describe the planet…

Earth and Planetary Astrophysics · Physics 2015-06-19 Masahiro Ogihara , Hiroshi Kobayashi , Shu-ichiro Inutsuka

The intrinsic luminosity of young Jupiters is of high interest for planet formation theory. It is an observable quantity that is determined by important physical mechanisms during formation, namely the accretion shock structure, and even…

Earth and Planetary Astrophysics · Physics 2015-06-16 Christoph Mordasini

We present a comprehensive evolutionary model of the Sun's protoplanetary disk, constructed to resolve the "CAI Storage" problem of meteoritics. We predict the abundances of calcium-rich, aluminum-rich inclusions (CAIs) and refractory…

Earth and Planetary Astrophysics · Physics 2018-10-10 Steven J. Desch , Anusha Kalyaan , Conel M. O'D. Alexander

Understanding exoplanet interiors is crucial for interpreting atmospheric observations and constraining their evolution and formation. However, due to limited observational constraints, interiors structures remain poorly understood. In this…

Earth and Planetary Astrophysics · Physics 2025-05-22 Esther van Dijk , Yamila Miguel

Jovian planet formation has been shown to be strongly correlated with host star metallicity, which is thought to be a proxy for disk solids. Observationally, previous works have indicated that jovian planets preferentially form around stars…

Earth and Planetary Astrophysics · Physics 2021-08-04 Kiersten M. Boley , Ji Wang , Joel C. Zinn , Karen A. Collins , Kevin I. Collins , Tianjun Gan , Ting S. Li

We investigate the orbital evolution of planetesimals in the inner disk in the presence of nebula gas and a (proto-) cold Jupiter. By varying the mass, eccentricity, and semi-major axis of the planet, we study the dependence of the relative…

Earth and Planetary Astrophysics · Physics 2023-09-26 Kangrou Guo , Eiichiro Kokubo

We describe the current state of knowledge about Mercury's interior structure. We review the available observational constraints, including mass, size, density, gravity field, spin state, composition, and tidal response. These data enable…

Earth and Planetary Astrophysics · Physics 2020-02-11 Jean-Luc Margot , Steven A. Hauck , Erwan Mazarico , Sebastiano Padovan , Stanton J. Peale

The accretion ages of the first planetesimals-the parent bodies of magmatic iron meteorites-suggest they formed within the first 0.5-1 Myr of Solar System history. Yet, planetesimal formation appears to have occurred in at least two…

Earth and Planetary Astrophysics · Physics 2025-10-24 Baibhav Srivastava , André Izidoro

The discovery of Jupiter-mass planets in close orbits about their parent stars has challenged models of planet formation. Recent observations have shown that a number of these planets have highly inclined, sometimes retrograde orbits about…

Earth and Planetary Astrophysics · Physics 2015-05-20 James Guillochon , Enrico Ramirez-Ruiz , Douglas N. C. Lin

Observations of exoplanets over the last two decades have revealed a new class of Jupiter-size planets with orbital periods of a few days, the so-called "hot Jupiters". Recent measurements using the Rossiter-McLaughlin effect have shown…

Earth and Planetary Astrophysics · Physics 2015-06-17 Jean Teyssandier , Smadar Naoz , Ian M. Lizarraga , Frederic A. Rasio

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

The dynamical structure of the Solar System can be explained by a period of orbital instability experienced by the giant planets. While a late instability was originally proposed to explain the Late Heavy Bombardment, recent work favors an…

Earth and Planetary Astrophysics · Physics 2019-12-25 Rafael Ribeiro de Sousa , Alessandro Morbidelli , Sean N. Raymond , Andre Izidoro , Rodney Gomes , Ernesto Vieira Neto

Recently two groups used first-principles computer simulations to model Jupiter's interior. While both studies relied on the same simulation technique, density functional molecular dynamics, the groups derived very different conclusions. In…

Astrophysics · Physics 2009-07-22 B. Militzer , W. B. Hubbard

Several properties of the Solar System, including the wide radial spacing of the giant planets, can be explained if planets radially migrated by exchanging orbital energy and momentum with outer disk planetesimals. Neptune's…

Earth and Planetary Astrophysics · Physics 2018-10-17 David Nesvorny

We present the first models of Jupiter and Saturn to couple their evolution to both a radiative-atmosphere grid and to high-pressure phase diagrams of hydrogen with helium and other admixtures. We find that prior calculated phase diagrams…

Astrophysics · Physics 2009-11-07 Jonathan J. Fortney , William B. Hubbard

Studying and understanding the physical and chemical processes that govern hot Jupiters gives us insights on the formation of these giant planets. Having a constraint on the molecular composition of their atmosphere can help us pinpoint…

Earth and Planetary Astrophysics · Physics 2024-04-10 Luc Bazinet , Stefan Pelletier , Björn Benneke , Ricardo Salinas , Gregory N. Mace

The formation of the solar system's giant planets predated the ultimate epoch of massive impacts that concluded the process of terrestrial planet formation. Following their formation, the giant planets' orbits evolved through an episode of…

Earth and Planetary Astrophysics · Physics 2021-06-23 Matthew S. Clement , Nathan A. Kaib , Sean N. Raymond , John E. Chambers

New equations of state (EOS) for hydrogen, helium, and compounds containing heavier elements are used to construct models for the structures of the planets Jupiter and Saturn. Good agreement with the gravitational moments J2 and J4 is…

Earth and Planetary Astrophysics · Physics 2013-07-12 Gerald I. Kerley