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Related papers: Planet formation models: the interplay with the pl…

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The effects of gas pressure gradients on the motion of solid grains in the solar nebula substantially enhances the efficiency of forming protoplanetary cores in the standard core accretion model in 'hybrid' scenarios for gas/ice giant…

Astrophysics · Physics 2009-11-10 Thayne Currie

The composition of giant planets' atmospheres is an important tracer of their formation history. While many theoretical studies investigate the heavy-element accretion within a gaseous protoplanetary disk, the possibility of solid accretion…

Earth and Planetary Astrophysics · Physics 2024-07-17 S. Shibata , R. Helled

Core Accretion, the most widely accepted scenario for planet formation, postulates existence of km-sized solid bodies, called planetesimals, arranged in a razor-thin disc in the earliest phases of planet formation. In the Tidal Downsizing…

Earth and Planetary Astrophysics · Physics 2015-06-04 Sergei Nayakshin , Seung-Hoon Cha

The standard model for giant planet formation is based on the accretion of solids by a growing planetary embryo, followed by rapid gas accretion once the planet exceeds a so-called critical mass. The dominant size of the accreted solids…

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

We present a new numerical framework to model the formation and evolution of giant planets. The code is based on the further development of the stellar evolution toolkit Modules for Experiments in Stellar Astrophysics (MESA). The model…

Earth and Planetary Astrophysics · Physics 2021-09-10 Claudio Valletta , Ravit Helled

We use a semi-analytic circumstellar disk model that considers movement of the snow line through evolution of accretion and the central star to investigate how gas giant frequency changes with stellar mass. The snow line distance changes…

Astrophysics · Physics 2009-11-13 Grant M. Kennedy , Scott J. Kenyon

The dominant accretion process leading to the formation of the terrestrial planets of the Solar System is a subject of intense scientific debate. Two radically different scenarios have been proposed. The classic scenario starts from a disk…

Earth and Planetary Astrophysics · Physics 2024-11-15 Alessandro Morbidelli , Thorsten Kleine , Francis Nimmo

Planet formation models begin with proto-embryos and planetesimals already fully formed, missing out a crucial step, the formation of planetesimals/proto-embryos. In this work, we include prescriptions for planetesimal and proto-embryo…

Earth and Planetary Astrophysics · Physics 2021-07-14 Gavin A. L. Coleman

We present a model for the formation of massive ($M > 10 M_\odot$) stars through accretion-induced collisions in the cores of embedded dense stellar clusters. This model circumvents the problem of accreting onto a star whose luminosity is…

Astrophysics · Physics 2009-10-30 Ian A. Bonnell , Matthew R. Bate , Hans Zinnecker

Giant planet formation in the core accretion (CA) paradigm is predicated by the formation of a core, assembled by the coagulation of grains and later by planetesimals within a protoplanetary disc. In contrast, in the disc instability…

Earth and Planetary Astrophysics · Physics 2015-06-19 Sergei Nayakshin , Ravit Helled , Aaron C. Boley

The characterization of Super-Earth-to-Neptune sized exoplanets relies heavily on our understanding of their formation and evolution. In this study, we link a model of planet formation by pebble accretion to the planets' long-term…

Earth and Planetary Astrophysics · Physics 2024-07-24 A. Vazan , C. W. Ormel , M. G. Brouwers

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

In the last few years, the so-called "Nice model" has got a significant importance in the study of the formation and evolution of the solar system. According to this model, the initial orbital configuration of the giant planets was much…

Earth and Planetary Astrophysics · Physics 2015-05-28 O. M. Guilera , A. Fortier , A. Brunini , O. G. Benvenuto

The formation of gas giant planets is assumed to be preceded by the emergence of solid cores in the conventional sequential-accretion paradigm. This hypothesis implies that the presence of earth-like planets can be inferred from the…

Astrophysics · Physics 2009-11-13 J. L. Zhou , S. J. Aarseth , D. N. C. Lin , M. Nagasawa

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

Exoplanets around different types of stars provide a window into the diverse environments in which planets form. This chapter describes the observed relations between exoplanet populations and stellar properties and how they connect to…

Earth and Planetary Astrophysics · Physics 2024-03-06 Gijs D. Mulders

We use a hybrid, multiannulus, n-body-coagulation code to investigate the growth of km-sized planetesimals at 0.4-2 AU around a solar-type star. After a short runaway growth phase, protoplanets with masses of roughly 10^26 g and larger form…

Astrophysics · Physics 2008-11-26 Scott J. Kenyon , Benjamin C. Bromley

The recent detection of planets around very low mass stars raises the question of the formation, composition and potential habitability of these objects. We use planetary system formation models to infer the properties, in particular their…

Earth and Planetary Astrophysics · Physics 2017-02-01 Yann Alibert , Willy Benz

Models of planet formation are built on underlying physical processes. In order to make sense of the origin of the planets we must first understand the origin of their building blocks. This review comes in two parts. The first part presents…

Earth and Planetary Astrophysics · Physics 2022-03-14 Sean N. Raymond , Alessandro Morbidelli