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The subject of satellite formation is strictly linked to the one of planetary formation. Giant planets strongly shape the evolution of the circum-planetary disks during their formation and thus, indirectly, influence the initial conditions…

Earth and Planetary Astrophysics · Physics 2014-11-20 Angioletta Coradini , Gianfranco Magni , Diego Turrini

The presence of giant planets influences potentially habitable worlds in numerous ways. Massive celestial neighbors can facilitate the formation of planetary cores and modify the influx of asteroids and comets towards Earth-analogs later…

Earth and Planetary Astrophysics · Physics 2018-04-18 Nikolaos Georgakarakos , Siegfried Eggl , Ian Dobbs-Dixon

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

Warm Neptune- and sub-Neptune-sized exoplanets in orbits smaller than Mercury's are thought to have experienced extensive atmospheric evolution. Here we propose that a potential outcome of this atmospheric evolution is the formation of…

Earth and Planetary Astrophysics · Physics 2015-05-12 Renyu Hu , Sara Seager , Yuk L. Yung

We present the results of N--body simulations which examine the effect that gas giant planet migration has on the formation of terrestrial planets. The models incorporate a 0.5 Jupiter mass planet undergoing type II migration through an…

Astrophysics · Physics 2009-11-11 Martyn J. Fogg , Richard P. Nelson

Interior models of Jupiter and Saturn are calculated and compared in the framework of the three-layer assumption, which rely on the perception that both planets consist of three globally homogeneous regions: a dense core, a metallic…

Astrophysics · Physics 2009-10-31 Tristan Guillot

Here we show preliminary calculations of the cooling and contraction of a 2 MJ planet. These calculations, which are being extended to 1-10 MJ, differ from other published "cooling tracks" in that they include a core accretion-gas capture…

Astrophysics · Physics 2016-08-30 J. J. Fortney , M. S. Marley , O. Hubickyj , P. Bodenheimer , J. J. Lissauer

Planet searches around evolved giant stars are bringing new insights to planet formation theories by virtue of the broader stellar mass range of the host stars compared to the solar-type stars that have been the subject of most current…

Direct measurements of the spectra of extrasolar giant planets are the keys to determining their physical and chemical nature. The goal of theory is to provide the tools and context with which such data are understood. It is only by putting…

Earth and Planetary Astrophysics · Physics 2009-10-05 Adam Burrows , Glenn Orton

Planetary embryos embedded in gaseous protoplanetary disks undergo Type I orbital migration. Migration can be inward or outward depending on the local disk properties but, in general, only planets more massive than several $M_\oplus$ can…

Earth and Planetary Astrophysics · Physics 2014-12-10 Christophe Cossou , Sean N. Raymond , Franck Hersant , Arnaud Pierens

Hot super-Earths are exoplanets with masses < 10 Earth masses and orbital periods < 20 days. Around 8 hot super-Earths have been discovered in the neighborhood of solar system. In this lecture, we review the mechanisms for the formation of…

Earth and Planetary Astrophysics · Physics 2015-05-13 Ji-Lin Zhou

The Saturn System has been studied in detail by the Cassini-Huygens Mission. A major thrust of those investigations has been to understand how Saturn formed and evolved and to place Saturn in the context of other gas giants and planetary…

This paper constructs an analytic description for the late stages of giant planet formation. During this phase of evolution, the planet gains the majority of its final mass through gas accretion at a rapid rate. This work determines the…

Earth and Planetary Astrophysics · Physics 2022-08-17 Fred C Adams , Konstantin Batygin

Recent observations have indicated a strong connection between compact ($a \lesssim 0.5$ au) super-Earth and mini-Neptune systems and their outer ($a \gtrsim$ a few au) giant planet companions. We study the dynamical evolution of such inner…

Earth and Planetary Astrophysics · Physics 2021-09-22 Bonan Pu , Dong Lai

A comprehensive exploration of Uranus and Neptune is essential to understand the formation and evolution of the giant planets, in particular, solar system, in general, and, by extension, a vast population of exoplanets. Though core…

Earth and Planetary Astrophysics · Physics 2020-06-25 Sushil K. Atreya , Mark H. Hofstadter , Joong Hyun In , Olivier Mousis , Kim Reh , Michael H. Wong

`Hot jupiters,' giant planets with orbits very close to their parent stars, are thought to form farther away and migrate inward via interactions with a massive gas disk. If a giant planet forms and migrates quickly, the planetesimal…

Astrophysics · Physics 2014-10-13 Sean N. Raymond , Thomas Quinn , Jonathan I. Lunine

Pressure is a key parameter in the physics and chemistry of planet formation and evolution. Previous studies have erroneously assumed that internal pressures monotonically increase with the mass of a body. Using smoothed particle…

Earth and Planetary Astrophysics · Physics 2020-06-04 Simon J. Lock , Sarah T. Stewart

Uranus and Neptune form a distinct class of planets in our solar system. Given this fact, and ubiquity of similar-mass planets in other planetary systems, it is essential to understand their interior structure and composition. However,…

Earth and Planetary Astrophysics · Physics 2021-08-04 Ravit Helled , Jonathan J. ~Fortney

Simulations of Jupiter's formation are presented that incorporate mixing of H-He with denser material entering the planet as solids. Heavy compounds and gas mix substantially when the planet becomes roughly as massive as Earth, because…

Earth and Planetary Astrophysics · Physics 2022-03-31 David Stevenson , Peter Bodenheimer , Jack J. Lissauer , Gennaro D'Angelo

In this Thesis I studied the formation of the four giant planets of the Solar System in the framework of the nucleated instability hypothesis. The model considers that solids and gas accretion are coupled in an interactive fashion, taking…

Earth and Planetary Astrophysics · Physics 2010-02-11 Andrea Fortier