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Exoplanet surveys have revealed a wide diversity of planetary systems, requiring integrated models of planet formation to explain their origin. Planet population synthesis (PPS) modelling is a key tool for linking theory with the…

Earth and Planetary Astrophysics · Physics 2026-04-21 Tadahiro Kimura , Masahiro Ikoma

The collection of planetary system properties derived from large surveys such as Kepler provides critical constraints on planet formation and evolution. These constraints can only be applied to planet formation models, however, if the…

Earth and Planetary Astrophysics · Physics 2020-01-08 Gijs D. Mulders , Christoph Mordasini , Ilaria Pascucci , Fred J. Ciesla , Alexandre Emsenhuber , Daniel Apai

We present N-body simulations of planetary system formation in thermally-evolving, viscous disc models. The simulations incorporate type I migration (including corotation torques and their saturation), gap formation, type II migration, gas…

Earth and Planetary Astrophysics · Physics 2015-06-22 Gavin A. L. Coleman , Richard P. Nelson

The ubiquity of planets and diversity of planetary systems reveal planet formation encompass many complex and competing processes. In this series of papers, we develop and upgrade a population synthesis model as a tool to identify the…

Earth and Planetary Astrophysics · Physics 2015-06-16 S. Ida , D. N. C. Lin , M. Nagasawa

During the late stage of planet formation when Mars-size cores appear, interactions among planetary cores can excite their orbital eccentricities, speed their merges and thus sculpture the final architecture of planet systems. This series…

Earth and Planetary Astrophysics · Physics 2015-03-13 Huigen Liu , Ji-lin Zhou , S. Wang

Population synthesis models of planetary systems developed during the last $\sim$15 years could reproduce several of the observables of the exoplanet population, and also allowed to constrain planetary formation models. We present our…

Earth and Planetary Astrophysics · Physics 2017-08-16 M. P. Ronco , O. M. Guilera , G. C. de Elía

Planet formation encompasses processes that span a remarkable 40 magnitudes in mass, ranging from collisions between micron-sized grains inherited from the ISM to the accretion of gas by giant planets. The planet formation process takes…

Earth and Planetary Astrophysics · Physics 2024-12-18 Chris Ormel

We examine the accretion of cores of giant planets from planetesimals, gas accretion onto the cores, and their orbital migration. We adopt a working model for nascent protostellar disks with a wide variety of surface density distributions…

Astrophysics · Physics 2009-11-10 S. Ida , D. N. C. Lin

The formation of planets depends on the underlying protoplanetary disc structure, which influences both the accretion and migration rates of embedded planets. The disc itself evolves on time-scales of several Myr during which both…

Earth and Planetary Astrophysics · Physics 2018-02-07 Bertram Bitsch , Michiel Lambrechts , Anders Johansen

The formation history of Jupiter has been of interest due to its ability to shape the solar system's history. Yet little attention has been paid to the formation and growth of Saturn and the other giant planets. Here, we explore the…

Earth and Planetary Astrophysics · Physics 2024-07-31 Anuja Raorane , Ramon Brasser , Soko Matsumura , Tommy Chi Ho Lau , Man Hoi Lee , Audrey Bouvier

In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial conditions that allowed their formation.…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yamila Miguel , Octavio M. Guilera , Adrián Brunini

In stellar astrophysics, the technique of population synthesis has been successfully used for several decades. For planets, it is in contrast still a young method which only became important in recent years because of the rapid increase of…

Earth and Planetary Astrophysics · Physics 2018-12-05 Christoph Mordasini

To understand the evolution of planetary systems, it is important to investigate planets in highly evolved stellar systems, and to explore the implications of their observed properties with respect to potential formation scenarios.…

Solar and Stellar Astrophysics · Physics 2015-08-06 Dominik Schleicher , Stefan Dreizler , Marcel Völschow , Robi Banerjee , Frederic V. Hessman

Aims. The connection between initial disc conditions and final orbital and physical properties of planets is not well-understood. In this paper, we numerically study the formation of planetary systems via pebble accretion and investigate…

Earth and Planetary Astrophysics · Physics 2021-06-23 Soko Matsumura , Ramon Brasser , Shigeru Ida

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

The stellar mass dependence of the unbiased giant planet occurrence rate may be the best statistical tool to constrain the formation of such planets. This rate rises and falls as a function of stellar mass, peaking around stars of $\sim…

Earth and Planetary Astrophysics · Physics 2026-03-04 Heather F Johnston , Olja Panic , Sabine Reffert , Beibei Liu , Xinghao Ma

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

Numerical calculations of planetary system formation are very demanding in terms of computing power. These synthetic planetary systems can however provide access to correlations, as predicted in a given numerical framework, between the…

Earth and Planetary Astrophysics · Physics 2025-09-10 Yann Alibert , Jeanne Davoult , Sara Marques

The discovery of giant planets in wide orbits represents a major challenge for planet formation theory. In the standard core accretion paradigm planets are expected to form at radial distances $\lesssim 20$ au in order to form massive cores…

Earth and Planetary Astrophysics · Physics 2018-05-30 O. M. Guilera , M. M. Miller Bertolami , M. P. Ronco

A well-known bottleneck for the core-accretion model of giant-planet formation is the loss of the cores into the star by Type-I migration, due to the tidal interactions with the gas disk. It has been shown that a steep surface-density…

Astrophysics · Physics 2009-11-13 Alessandro Morbidelli , Aurelien Crida , Frederic Masset , Richard P. Nelson