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A successful solar system model must reproduce the four terrestrial planets. Here, we focus on 1) the likelihood of forming Mercury and the four terrestrial planets in the same system (a 4-P system); 2) the orbital properties and masses of…

Earth and Planetary Astrophysics · Physics 2020-06-17 Patryk Sofia Lykawka

We present a series of calculations aimed at examining how an inner system of planetesimals/protoplanets, undergoing terrestrial planet formation, evolves under the influence of a giant planet undergoing inward type II migration through the…

Astrophysics · Physics 2008-11-26 Martyn J. Fogg , Richard P. Nelson

The Solar System's orbital structure is thought to have been sculpted by an episode of dynamical instability among the giant planets. However, the instability trigger and timing have not been clearly established. Hydrodynamical modeling has…

Earth and Planetary Astrophysics · Physics 2022-05-11 Beibei Liu , Sean N. Raymond , Seth A. Jacobson

Remnant planetesimals might have played an important role in reducing the orbital eccentricities of the terrestrial planets after their formation via giant impacts. However, the population and the size distribution of remnant planetesimals…

Astrophysics · Physics 2009-11-13 Ryuji Morishima , Max W. Schmidt , Joachim Stadel , Ben Moore

Prevailing $N$-body planet formation models typically start with lunar-mass embryos and show a general trend of rapid migration of massive planetary cores to the inner Solar System in the absence of a migration trap. This setup cannot…

Earth and Planetary Astrophysics · Physics 2024-03-27 Tommy Chi Ho Lau , Man Hoi Lee , Ramon Brasser , Soko Matsumura

Terrestrial planet formation (TPF) is a difficult problem that has vexed researchers for decades. Numerical models are only partially successful at reproducing the orbital architecture of the inner planets, but have generally not considered…

Earth and Planetary Astrophysics · Physics 2025-06-12 R. Brasser

This chapter of the book Planetary Ring Systems addresses the origin of planetary rings, one of the least understood processes related to planet formation and evolution. Whereas rings seem ubiquitous around giant planets, their great…

Earth and Planetary Astrophysics · Physics 2018-10-17 S. Charnoz , R. M. Canup , A. Crida , L. Dones

We study the dynamics of a system of two super-Earths embedded in a protoplanetary disc. We build a simple model of an irradiated viscous disc and use analytical prescriptions for the planet-disc interactions which lead to migration. We…

Earth and Planetary Astrophysics · Physics 2015-09-09 Cezary Migaszewski

Disk material has been observed around both components of some young close binary star systems. It has been shown that if planets form at the right places within such disks, they can remain dynamically stable for very long times. Herein, we…

Astrophysics · Physics 2009-11-11 Elisa V. Quintana , Jack J. Lissauer

Using N-body simulations with planet-disk interactions, we present a mechanism capable of forming compact systems of hot super Earths such as Kepler 11. Recent studies show that outward migration is common in the inner parts of radiative…

Earth and Planetary Astrophysics · Physics 2015-06-16 Christophe Cossou , Sean N. Raymond , Arnaud Pierens

Terrestrial planets are thought to be the result of a vast number of gravitational interactions and collisions between smaller bodies. We use numerical simulations to show that practically identical initial conditions result in a wide array…

Earth and Planetary Astrophysics · Physics 2017-09-05 Volker Hoffmann , Simon L. Grimm , Ben Moore , Joachim Stadel

We show that interaction with a gas disk may produce young planetary systems with closely-spaced orbits, stabilized by mean-motion resonances between neighbors. On longer timescales, after the gas is gone, interaction with a remnant…

Astrophysics · Physics 2009-11-13 Edward W. Thommes , Geoffrey Bryden , Yanqin Wu , Frederic A. Rasio

We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics of marginally unstable systems of gas and ice…

Earth and Planetary Astrophysics · Physics 2009-07-22 Sean N. Raymond , Philip J. Armitage , Noel Gorelick

We calculate herein the late stages of terrestrial planet accumulation around a solar type star that has a binary companion with semimajor axis larger than the terrestrial planet region. We perform more than one hundred simulations to…

Astrophysics · Physics 2011-02-11 Elisa V. Quintana , Fred C. Adams , Jack J. Lissauer , John E. Chambers

We present the results of an extensive study of the final stage of terrestrial planet formation in disks with different surface density profiles and for different orbits of Jupiter and Saturn. We carried out simulations for disk densities…

Earth and Planetary Astrophysics · Physics 2016-01-20 Nader Haghighipour , Othon C. Winter

The growth and composition of Earth is a direct consequence of planet formation throughout the Solar System. We discuss the known history of the Solar System, the proposed stages of growth and how the early stages of planet formation may be…

Earth and Planetary Astrophysics · Physics 2015-11-25 Seth A. Jacobson , Kevin J. Walsh

We develop a semi-analytical model for computing planetary system formation with the aim of explaining the observed diversity of planetary systems architectures and relate this primordial diversity with the initial properties of the disc…

Earth and Planetary Astrophysics · Physics 2015-05-28 Yamila Miguel , Octavio M. Guilera , Adrian Brunini

In order to test planetary accretion and differentiation scenarios, we integrated a multistage core-mantle differentiation model with N-body accretion simulations. Impacts between embryos and planetesimals result in magma ocean formation…

The early stages of dynamical evolution of planetary systems are often shaped by dissipative processes that drive orbital migration. In multi-planet systems, convergent amassing of orbits inevitably leads to encounters with rational period…

Earth and Planetary Astrophysics · Physics 2015-05-08 Konstantin Batygin

Mars is likely to be a planetary embryo formed through collisions with planetesimals, which can explain its small mass and rapid formation timescale obtained from 182Hf-182$W chronometry. In the classical theory of planet formation, the…

Earth and Planetary Astrophysics · Physics 2015-06-15 Hiroshi Kobayashi , Nicolas Dauphas
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