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The large number of exoplanets found to orbit their host stars in very close orbits have significantly advanced our understanding of the planetary formation process. It is now widely accepted that such short-period planets cannot have…

Earth and Planetary Astrophysics · Physics 2011-12-07 Jianghui Ji , Sheng Jin , C. G. Tinney

Understanding the origin and long-term evolution of the Solar System is a fundamental goal of planetary science and astrophysics. This chapter describes our current understanding of the key processes that shaped our planetary system,…

Earth and Planetary Astrophysics · Physics 2024-04-24 Sean N. Raymond

The study of our Solar System -- its formation, evolution, and long-term stability -- has been ongoing for centuries and is now a standard part of scientific education. While the formation of other Solar-like exoplanetary systems is…

Astrophysics of Galaxies · Physics 2026-05-14 Václav Pavlík , Steven N. Shore , Vladimír Karas , Matyáš Fuksa

We investigate how the formation and evolution of extrasolar planetary systems can be affected by stellar encounters that occur in the crowded conditions of a stellar cluster. Using plausible estimates of cluster evolution, we show how…

Astrophysics · Physics 2019-08-17 Ian A. Bonnell , Kester W. Smith , Melvyn B. Davies , Keith Horne

Planet-disk interaction predicts a change in the orbital elements of an embedded planet. Through linear and fully hydrodynamical studies it has been found that migration is typically directed inwards. Hence, this migration process gives…

Earth and Planetary Astrophysics · Physics 2015-05-27 Willy Kley

The environment of a binary star system may contain two circumstellar disks, one orbiting each of the stars, and a circumbinary disk orbiting about the entire binary. The disk structure and evolution are modified by the presence of the…

Solar and Stellar Astrophysics · Physics 2021-11-16 Stephen H. Lubow , Pawel Artymowicz

We study the effect of a massive planetesimal disk on the dynamical stability of the outer planets assuming, as has been suggested recently, that these were initially locked in a compact and multiresonant configuration as a result of…

Earth and Planetary Astrophysics · Physics 2015-05-20 Mauricio Reyes-Ruiz , Hector Aceves , Carlos E. Chavez

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

The majority of binary star systems that host exoplanets will spend the first portion of their lives within a star-forming cluster that may drive dynamical evolution of the binary-planet system. We perform numerical simulations of S-type…

Earth and Planetary Astrophysics · Physics 2022-08-03 Elizabeth A. Ellithorpe , Nathan A. Kaib

The growing body of observational data on extrasolar planets and protoplanetary disks has stimulated intense research on planet formation and evolution in the past few years. The extremely diverse, sometimes unexpected physical and orbital…

Earth and Planetary Astrophysics · Physics 2016-06-01 Clément Baruteau , Xuening Bai , Christoph Mordasini , Paul Mollière

We study the interaction of a proto-planetary disk and a planet on a highly inclined orbit in the linear regime. The evolution of the planet is dominated by dynamical friction for planet masses above several Earth-masses. Smaller planets…

Earth and Planetary Astrophysics · Physics 2012-05-23 Hanno Rein

Numerical modeling of the interaction of giant planets and the planetesimal disk was carried out for the Nice model, in which the initial orbits of the planets are in resonant configurations. In addition to the standard Nice model,…

Earth and Planetary Astrophysics · Physics 2025-01-14 V. V. Emel'yanenko

We describe the long-term evolution of compact systems of terrestrial planets, using a set of simulations that match the statistical properties of the observed exoplanet distribution. The evolution is driven by tidal dissipation in the…

Earth and Planetary Astrophysics · Physics 2015-06-19 Bradley M. S. Hansen , Norman Murray

We study how close-in systems such as those detected by Kepler are affected by the dynamics of bodies in the outer system. We consider two scenarios: outer systems of giant planets potentially unstable to planet--planet scattering, and wide…

Earth and Planetary Astrophysics · Physics 2017-05-03 Alexander J Mustill , Melvyn B Davies , Anders Johansen

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

Since the discovery of the first extra-solar planets, we are confronted with the puzzling diversity of planetary systems. Processes like planet radial migration in gas-disks and planetary orbital instabilities, often invoked to explain the…

Earth and Planetary Astrophysics · Physics 2015-05-20 Alessandro Morbidelli

These notes provide an introduction to the theory of the formation and early evolution of planetary systems. Topics covered include the structure, evolution and dispersal of protoplanetary disks; the formation of planetesimals, terrestrial…

Astrophysics · Physics 2017-02-22 Philip J. Armitage

I attempt to summarize our knowledge of planet formation in evolving protoplanetary discs. I first review the physics of disc evolution and dispersal. For most of the disc lifetime evolution is driven by accretion and photoevaporation, and…

Earth and Planetary Astrophysics · Physics 2015-06-16 Richard Alexander

Recent discoveries of strongly misaligned transiting exoplanets pose a challenge to the established planet formation theory which assumes planetary systems to form and evolve in isolation. However, the fact that the majority of stars…

Earth and Planetary Astrophysics · Physics 2012-02-01 Ingo Thies , Pavel Kroupa , Simon P. Goodwin , Dimitris Stamatellos , Anthony P. Whitworth

Various problems of the formation and evolution of planetary systems are studied. Most of the studies are devoted to the Solar System. The collapse of the presolar cloud and the accumulation of planets are studied. The author considers the…

Earth and Planetary Astrophysics · Physics 2026-01-15 S. I. Ipatov