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This paper reviews our current understanding of terrestrial planets formation. The focus is on computer simulations of the dynamical aspects of the accretion process. Throughout the chapter, we combine the results of these theoretical…

Earth and Planetary Astrophysics · Physics 2012-08-24 Alessandro Morbidelli , Jonathan I. Lunine , David P. O`brien , Sean N. Raymond , Kevin J. Walsh

The birth of giant planets in protoplanetary disks is known to alter the structure and evolution of the disk environment, but most of our knowledge focuses on its effects on the observable gas and dust. The impact on the evolution of the…

Many processes during the evolution of protoplanetary disks and during planet formation are highly sensitive to the sizes of dust particles that are present in the disk: The efficiency of dust accretion in the disk and volatile transport on…

Earth and Planetary Astrophysics · Physics 2022-08-17 Sebastian Markus Stammler , Tilman Birnstiel

Large mm surveys of star forming regions enable the study of entire populations of planet-forming disks and reveal correlations between their observable properties. Population studies of disks have shown that the correlation between disk…

Earth and Planetary Astrophysics · Physics 2024-08-07 Luca Delussu , Tilman Birnstiel , Anna Miotello , Paola Pinilla , Giovanni Rosotti , Sean M. Andrews

In order to explain grain growth to mm sized particles and their retention in outer regions of protoplanetary disks, as it is observed at sub-mm and mm wavelengths, we investigate if strong inhomogeneities in the gas density profiles can…

Earth and Planetary Astrophysics · Physics 2012-02-14 P. Pinilla , T. Birnstiel , L. Ricci , C. P. Dullemond , A. L. Uribe , L. Testi , A. Natta

The formation of planets is one of the major unsolved problems in modern astrophysics. Planets are believed to form out of the material in circumstellar disks known to exist around young stars, and which are a by-product of the star…

Solar and Stellar Astrophysics · Physics 2009-02-17 R. Millan-Gabet , John D. Monnier

The core accretion scenario of planet formation assumes that planetesimals and planetary embryos are formed during the primordial, gaseous phases of the protoplanetary disk. However, how the dust particles overcome the traditional growth…

Earth and Planetary Astrophysics · Physics 2021-07-20 Zsolt Regaly , Kundan Kadam , Cornelis P. Dullemond

Dusty protoplanetary disks surrounding young low-mass stars are the birthplaces of planets. Studies of the evolutionary timescales of such disks provide important constraints on the timescales of planet formation. Binary companions,…

Solar and Stellar Astrophysics · Physics 2009-12-10 M. G. Petr-Gotzens , S. Daemgen , S. Correia

Recent observations of gaps and non-axisymmetric features in the dust distributions of transition disks have been interpreted as evidence of embedded massive protoplanets. However, comparing the predictions of planet-disk interaction models…

Earth and Planetary Astrophysics · Physics 2015-09-16 Alexander J. W. Richert , Wladimir Lyra , Aaron Boley , Mordecai-Mark Mac Low , Neal Turner

Past studies have revealed the dependency of the disc parameters (mass, radius, viscosity, grain fragmentation velocity, dust-to-gas ratio) on the formation of giant planets, where more massive discs seem beneficial for giant planet…

Earth and Planetary Astrophysics · Physics 2026-03-18 Angie Daniela Guzmán Franco , Sofia Savvidou , Bertram Bitsch

The abundances of elements in the Earth and the terrestrial planets provide the initial conditions for life and clues as to the history and formation of the Solar System. We follow the pioneering work of Bond et al. (2010) and combine…

Earth and Planetary Astrophysics · Physics 2015-06-11 Sebastian Elser , Michael R. Meyer , Ben Moore

The mechanisms of planet formation are still under debate. We know little about how planets form, even if more than 4000 exoplanets have been detected to date. Recent investigations target the cot of newly born planets: the protoplanetary…

Earth and Planetary Astrophysics · Physics 2020-01-22 A. Zurlo , G. Cugno , M. Montesinos , H. Canovas , S. Casassus , V. Christiaens , L. Cieza , N. Huelamo , S. Perez

During the late stages of giant planet formation, protoplanets are surrounded by a circumplanetary disk and an infalling envelope of gas and dust. For systems with sufficient cooling, material entering the sphere of influence of the planet…

Earth and Planetary Astrophysics · Physics 2024-09-20 Aster G. Taylor , Fred C. Adams

Protoplanetary disks form through angular momentum conservation in collapsing dense cores. In this work, we perform the first simulations with a maximal resolution down to the astronomical unit (au) of protoplanetary disk formation, through…

The apparent dependence of detection frequency of extrasolar planets on the metallicity of their host stars is investigated with Monte Carlo simulations using a deterministic core-accretion planet formation model. According to this model,…

Astrophysics · Physics 2017-10-18 S. Ida , D. N. C. Lin

The exoplanet diversity has been linked to the disc environment in which they form, where the host star metallicity and the formation pathways play a crucial role. In the context of the core accretion paradigm, the initial stages of planet…

Earth and Planetary Astrophysics · Physics 2024-03-13 Geoffrey Andama , Jingyi Mah , Bertram Bitsch

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

Super Earths are the largest population of exoplanets and are seen to exhibit a rich diversity of compositions as inferred through their mean densities. Here we present a model that combines equilibrium chemistry in evolving disks with core…

Earth and Planetary Astrophysics · Physics 2016-09-21 Matthew Alessi , Ralph E. Pudritz , Alex J. Cridland

We have performed three-dimensional two-fluid (gas-dust) hydrodynamical models of circumstellar discs with embedded protoplanets (3 - 333 M\oplu) and small solid bodies (radii 10cm to 10m). We find that high mass planets (\gtrsim Saturn…

Earth and Planetary Astrophysics · Physics 2015-06-04 Ben A. Ayliffe , Guillaume Laibe , Daniel J. Price , Matthew R. Bate

We point out that protoplanets created in the framework of the Tidal Downsizing (TD) theory for planet formation play a very important role for the evolution of accretion discs hosting them. Since all TD protoplanets are initially as…

Solar and Stellar Astrophysics · Physics 2015-06-12 Sergei Nayakshin
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