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The evolution of a system consisting of a protoplanetary disc with two embedded Jupiter sized planets is studied numerically. The disc is assumed to be flat and non-self gravitating, which is modeled by the planar (two-dimensional)…

Astrophysics · Physics 2016-08-30 Willy Kley

Studies of planet migration derived from disc planet interactions began before the discovery of exoplanets. The potential importance of migration for determining orbital architectures being realised, the field received greater attention…

Earth and Planetary Astrophysics · Physics 2021-12-15 J. C. B. Papaloizou

Transitional disks are protoplanetary disks with large and deep central holes in the gas, possibly carved by young planets. Dong, R., & Dawson, R. 2016, ApJ, 825, 7 simulated systems with multiple giant planets that were capable of carving…

Earth and Planetary Astrophysics · Physics 2023-03-08 Rory Bowens , Andrew Shannon , Rebekah Dawson , Jiayin Dong

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 determine the evolution of a giant planet-disk system that orbits a member of a binary star system and is mildly inclined with respect to the binary orbital plane. The planet orbit and disk are initially mutually coplanar. We analyze the…

Earth and Planetary Astrophysics · Physics 2016-01-27 Stephen H. Lubow , Rebecca G. Martin

It has been suggested that circumstellar disks evolve from dense, actively accreting structures to low-mass, replenished remnants. During this transition, grains may assemble into planetesimals, or the disk may be cleared by newborn…

Astrophysics · Physics 2007-05-23 Ray Jayawardhana

Extensive ground and space based surveys have now characterized the properties of thousands of exoplanets; their radii, masses, orbits around their host stars, and the beginnings of accurate measurements of the chemical compositions of…

Earth and Planetary Astrophysics · Physics 2025-05-30 Ralph E. Pudritz , Alex J. Cridland , Julie Inglis , Mathew Alessi

In this series of lectures I review recent observational progress in constraining models of galaxy formation and evolution highlighting the importance advances in addressing questions of the assembly history and origin of the Hubble…

Astrophysics · Physics 2007-05-23 Richard S Ellis

Planet-disk interactions, where an embedded massive body interacts gravitationally with the protoplanetary disk it was formed in, can play an important role in reshaping both the disk and the orbit of the planet. Spiral density waves are…

Earth and Planetary Astrophysics · Physics 2022-11-09 Sijme-Jan Paardekooper , Ruobing Dong , Paul Duffell , Jeffrey Fung , Frederic S. Masset , Gordon Ogilvie , Hidekazu Tanaka

We model the evolution of planets with various masses and compositions. We investigate the effects of the composition and its depth dependence on the long-term evolution of the planets. The effects of opacity and stellar irradiation are…

Earth and Planetary Astrophysics · Physics 2015-06-16 A. Vazan , A. Kovetz , M. Podolak , R. Helled

Planetesimal formation stage represents a major gap in our understanding of the planet formation process. The late-stage planet accretion models typically make arbitrary assumptions about planetesimals and pebbles distribution while the…

Earth and Planetary Astrophysics · Physics 2017-12-13 Joanna Drazkowska , Yann Alibert

We review the problem of the formation of terrestrial planets, with particular emphasis on the interaction of dynamical and geochemical models. The lifetime of gas around stars in the process of formation is limited to a few million years…

Earth and Planetary Astrophysics · Physics 2009-06-25 Jonathan I. Lunine , David P. O'Brien , Sean N. Raymond , Alessandro Morbidelli , Thomas Quinn , Amara Graps

In this introductory chapter of the Special Issue entitled `The Structure and Evolution of Stars', we highlight the recent major progress made in our understanding in the physics that governs stellar interiors. In so doing, we combine…

Solar and Stellar Astrophysics · Physics 2023-08-28 Dominic M. Bowman , Jennifer van Saders , Jorick S. Vink

As of today over 40 planetary systems have been discovered in binary star systems. In all cases the configuration appears to be circumstellar, where the planets orbit around one of the stars, the secondary acting as a perturber. The…

Earth and Planetary Astrophysics · Physics 2015-05-14 Willy Kley

The discovery of now about 20 extrasolar planets orbiting solar-type stars with properties quite different from those in our Solar System has raised many questions about the formation and evolution of planets. The tidal interaction between…

Astrophysics · Physics 2007-05-23 Willy Kley

We study the evolution of a system consisting of two protoplanets still embedded in a protoplanetary disk. Results of two different numerical approaches are presented. In the first kind of model the motion of the disk material is followed…

Astrophysics · Physics 2023-07-19 Willy Kley

Recent observations started revealing the compositions of protostellar discs and planets beyond the Solar System. In this paper, we explore how the compositions of terrestrial planets are affected by dynamical evolution of giant planets. We…

Earth and Planetary Astrophysics · Physics 2016-02-17 Soko Matsumura , Ramon Brasser , Shigeru Ida

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

Accumulation of dust and ice particles into planetesimals is an important step in the planet formation process. Planetesimals are the seeds of both terrestrial planets and the solid cores of gas and ice giants forming by core accretion.…

Earth and Planetary Astrophysics · Physics 2015-06-18 Anders Johansen , Jürgen Blum , Hidekazu Tanaka , Chris Ormel , Martin Bizzarro , Hans Rickman

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