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The solar system's dynamical state can be explained by an orbital instability among the giant planets. A recent model has proposed that the giant planet instability happened during terrestrial planet formation. This scenario has been shown…

Earth and Planetary Astrophysics · Physics 2019-01-09 Matthew S. Clement , Nathan A. Kaib , Sean N. Raymond , John E. Chambers , Kevin J. Walsh

The late-stage formation of giant planetary systems is rich in interesting dynamical mechanisms. Previous simulations of three giant planets initially on quasi-circular and quasi-coplanar orbits in the gas disc have shown that highly…

Earth and Planetary Astrophysics · Physics 2018-05-02 Anne-Sophie Libert , Sotiris Sotiriadis , Kyriaki I. Antoniadou

We consider the formation of satellites around the Pluto-Charon binary. An early collision between the two partners likely produced the binary and a narrow ring of debris, out of which arose the moons Styx, Nix, Kerberos and Hydra. How the…

Earth and Planetary Astrophysics · Physics 2015-08-19 B. C. Bromley , S. J. Kenyon

Exoplanet discoveries have motivated numerous efforts to find unseen populations of exomoons, yet they have been unsuccessful. A plausible explanation is that most discovered planets are located on close-in orbits, which would make their…

Earth and Planetary Astrophysics · Physics 2020-01-08 Mario Sucerquia , Vanesa Ramírez , Jaime A. Alvarado-Montes , Jorge I. Zuluaga

Chariklo is the only small Solar system body confirmed to have rings. Given the instability of its orbit, the presence of rings is surprising, and their origin remains poorly understood. In this work, we study the dynamical history of the…

Earth and Planetary Astrophysics · Physics 2017-05-24 Jeremy Wood , Jonti Horner , Tobias C. Hinse , Stephen C. Marsden

Although the long-term numerical integrations of planetary orbits indicate that our planetary system is dynamically stable at least +/- Gyr, the dynamics of our Solar System includes both chaotic and stable motions: the large planets…

Astrophysics · Physics 2009-11-13 Áron Süli , Rudolf Dvorak , Florian Freistetter

The dynamical stability of tightly packed exoplanetary systems remains poorly understood. While for a two-planet system a sharp stability boundary exists, numerical simulations of three and more planet systems show that they can experience…

Earth and Planetary Astrophysics · Physics 2020-09-30 Antoine C. Petit , Gabriele Pichierri , Melvyn B. Davies , Anders Johansen

Many dynamical aspects of the solar system can be explained by the outer planets experiencing a period of orbital instability sometimes called the Nice Model. Though often correlated with a perceived delayed spike in the lunar cratering…

Earth and Planetary Astrophysics · Physics 2018-05-16 Matthew S. Clement , Nathan A. Kaib , Sean N. Raymond , Kevin J. Walsh

The asteroid belt is a unique source of information on some of the most important questions facing solar system science. These questions include the sizes, numbers, types and orbital distributions of the planetesimals that formed the…

Earth and Planetary Astrophysics · Physics 2024-11-20 Stanley F. Dermott , Dan Li , Apostolos A. Christou

With recent advances in the modeling of the solar system giant planets, rapid progress has been made in understanding the remaining questions pertaining to their formation and evolution. However, this progress has largely neglected the…

Earth and Planetary Astrophysics · Physics 2026-02-04 Yubo Su , Janosz W. Dewberry , Roberto Tejada Arevalo , Ankan Sur , Adam Burrows

Escalating observations of exo-minor planets and their destroyed remnants both passing through the solar system and within white dwarf planetary systems motivate an understanding of the orbital history and fate of exo-Kuiper belts and…

The solar system planets are benchmarks for the planet formation theory. Yet two paradigms coexist for the four terrestrial planets: the prolonged collisional growth among planetesimals lasting $>100$ million years (Myr) and the fast…

Earth and Planetary Astrophysics · Physics 2024-11-25 Tong Fang , Rongxi Bi , Hui Zhang , You Zhou , Christian Reinhardt , Hongping Deng

The solar system planetary architecture has been proposed to be consistent with the terrestrial and giant planets forming from material rings at ~1 au and ~5 au, respectively. Here, we show that super-Earths and mini-Neptunes may share a…

Earth and Planetary Astrophysics · Physics 2025-01-08 Sho Shibata , Andre Izidoro

All near-Earth asteroids (NEAs) that reach sufficiently small perihelion distances will undergo a so-called super-catastrophic disruption. The mechanisms causing such disruptions are currently unknown or, at least, undetermined. To help…

Earth and Planetary Astrophysics · Physics 2023-04-04 Athanasia Toliou , Mikael Granvik

The exoplanet mass radius diagram reveals that super Earths display a wide range of radii, and therefore mean densities, at a given mass. Using planet population synthesis models, we explore the key physical factors that shape this…

Earth and Planetary Astrophysics · Physics 2020-07-29 Matthew Alessi , Julie Inglis , Ralph E. Pudritz

First, we review the main physical effects to be considered in the building of evolutionary models of rotating stars on the Upper Main-Sequence (MS). The internal rotation law evolves as a result of contraction and expansion, meridional…

Astrophysics · Physics 2009-10-31 Andre Maeder , Georges Meynet

Ensembles of in-plane and inclined orbits in the vicinity of the Lagrange points of the terrestrial planets are integrated for up to 100 million years. The integrations incorporate the gravitational effects of Sun and the eight planets…

Astrophysics · Physics 2009-10-31 S. A. Tabachnik , N. W. Evans

Despite the discovery of thousands of exoplanets in recent years, the number of known exoplanets in star clusters remains tiny. This may be a consequence of close stellar encounters perturbing the dynamical evolution of planetary systems in…

Earth and Planetary Astrophysics · Physics 2020-07-29 Katja Stock , Maxwell X. Cai , Rainer Spurzem , M. B. N. Kouwenhoven , Simon Portegies Zwart

The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system. The Uranian system contains a complex system of rings…

Earth and Planetary Astrophysics · Physics 2023-10-25 Stephen R. Kane , Zhexing Li

Ring arcs are the result of particles in corotation resonances with nearby satellites. Arcs are present in Saturn and Neptune systems, in Saturn they are also associated with small satellites immersed on them. The satellite Aegaeon is…

Earth and Planetary Astrophysics · Physics 2020-05-01 Gustavo Madeira , Silvia Maria Giuliatti Winter