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The structure of protoplanetary disks plays an essential role in planet formation. Disks that are highly inclined, or ''edge-on'', are of particular interest since their geometry provides a unique opportunity to study the disk's vertical…

A new view of disk evolution is emerging from self-consistent numerical simulation modeling of the formation of circumstellar disks from the direct collapse of prestellar cloud cores. This has implications for many aspects of star and…

Solar and Stellar Astrophysics · Physics 2015-06-12 Shantanu Basu , Eduard I. Vorobyov

Over the past decade, advancement of observational capabilities, specifically the Atacama Large Millimeter/submillimeter Array (ALMA) and SPHERE instrument, alongside theoretical innovations like pebble accretion, have reshaped our…

Earth and Planetary Astrophysics · Physics 2024-09-30 Tilman Birnstiel

This paper reviews the dynamics of the growth of solid particles from micron-sized dust grains to planets in protostellar accretion disks. The formation and orbital evolution of giant protoplanets is also discussed.

Astrophysics · Physics 2007-05-23 Steven P. Ruden

Evidence of mutually inclined planetary orbits has been reported for giant planets these last years. Here we aim to study the impact of eccentric and inclined massive giant planets on the terrestrial planet formation process, and…

Earth and Planetary Astrophysics · Physics 2018-06-06 Sotiris Sotiriadis , Anne-Sophie Libert , Sean N. Raymond

Planets form in protoplanetary discs. Their masses, distribution, and orbits sensitively depend on the structure of the protoplanetary discs. However, what sets the initial structure of the discs in terms of mass, radius and accretion rate…

Astrophysics of Galaxies · Physics 2020-03-11 Patrick Hennebelle , Benoît Commerçon , Yueh-Ning Lee , Sébastien Charnoz

Simulations of dense stellar systems currently face two major hurdles, one astrophysical and one computational. The astrophysical problem lies in the fact that several major stages in binary evolution, such as common envelope evolution, are…

Astrophysics · Physics 2007-05-23 Piet Hut

In the core accretion scenario of planet formation, rocky cores grow by first accreting solids until they are massive enough to accrete gas. For giant planet formation this means that a massive core must form within the lifetime of the gas…

Earth and Planetary Astrophysics · Physics 2023-06-21 Andrin Kessler , Yann Alibert

Planetary systems are angular momentum reservoirs generated during star formation. This accretion process produces very powerful engines able to drive the optical jets and the molecular outflows. A fraction of the engine energy is released…

Astrophysics · Physics 2009-11-13 Ana I. Gomez de Castro

The disc surrounding PDS 70, with two directly imaged embedded giant planets, is an ideal laboratory to study planet-disc interaction. We present three-dimensional smoothed particle hydrodynamics simulations of the system. In our…

Earth and Planetary Astrophysics · Physics 2020-10-28 Claudia Toci , Giuseppe Lodato , Valentin Christiaens , Davide Fedele , Christophe Pinte , Daniel J. Price , Leonardo Testi

One of the main scenarios of planet formation is the core accretion model where a massive core forms first and then accretes a gaseous envelope. This core forms by accreting solids, either planetesimals, or pebbles. A key constraint in this…

Earth and Planetary Astrophysics · Physics 2018-11-21 Natacha Brügger , Yann Alibert , Sareh Ataiee , Willy Benz

The formation of giant planets requires accumulation of ~10 Earth mass in solids; but how do protoplanets acquire their mass? There are many, often competing processes that regulate the accretion rate of protoplanets. To assess their…

Earth and Planetary Astrophysics · Physics 2015-06-03 Chris Ormel , Hiroshi Kobayashi

The evolution of protoplanetary discs embedded in stellar clusters depends on the age and the stellar density in which they are embedded. Stellar clusters of young age and high stellar surface density destroy protoplanetary discs by…

Earth and Planetary Astrophysics · Physics 2017-12-20 Nelson Ndugu , Bertram Bitsch , Edward Jurua

The formation of disk galaxies is one of the most outstanding problems in modern astrophysics and cosmology. We review the progress made by numerical simulations carried out on large parallel supercomputers. Recent progress stems from a…

Astrophysics · Physics 2010-10-28 Lucio Mayer , Fabio Governato , Tobias Kaufmann

Protoplanetary disks are the sites of planet formation, and the evolution and eventual dispersal of these disks strongly influences the formation of planetary systems. Disk evolution during the planet-forming epoch is driven by accretion…

Earth and Planetary Astrophysics · Physics 2015-06-17 Richard Alexander , Ilaria Pascucci , Sean Andrews , Philip Armitage , Lucas Cieza

As stellar compositions evolve over time in the Milky Way, so will the resulting planet populations. In order to place planet formation in the context of Galactic chemical evolution, we make use of a large ($N = 5\,325$) stellar sample…

Earth and Planetary Astrophysics · Physics 2023-10-11 Jesper Nielsen , Matthew Raymond Gent , Maria Bergemann , Philipp Eitner , Anders Johansen

The formation and early evolution of protoplanetary disks are governed by a wide variety of physical processes during a gravitational collapse. Observations have begun probing disks in their earliest stages, and have favored the…

Understanding the physical structure of the planet formation environment, the protoplanetary disk, is essential for the interpretation of high resolution observations of the dust and future observations of the magnetic field structure.…

Earth and Planetary Astrophysics · Physics 2020-10-21 Richard Teague

The discovery of thousands of exoplanets has shown that the birth of planets is a very efficient process in nature. Several physical mechanisms have been proposed to describe the assembly of planets in disks surrounding young stars.…

Earth and Planetary Astrophysics · Physics 2018-10-17 Luca Ricci , Andrea Isella , Shang-Fei Liu , Hui Li