English
Related papers

Related papers: Chemistry in an Evolving Protoplanetary Disk: Effe…

200 papers

If planetesimal formation is an efficient process, as suggested by several models involving gravitational collapse of pebble clouds, then, before long, a significant part of the primordial dust mass should be absorbed in many km sized…

Earth and Planetary Astrophysics · Physics 2019-09-18 Konstantin Gerbig , Christian T. Lenz , Hubert Klahr

One of the main evolutionary stages of planet formation is the dynamical evolution of planetesimal disks. These disks are thought to evolve through gravitational encounters and physical collisions between single planetesimals. In recent…

Earth and Planetary Astrophysics · Physics 2015-05-20 Hagai B. Perets

The great diversity of extrasolar planetary systems has challenged our understanding of how planets form, and how their orbits evolve as they form. Among the various processes that may account for this diversity, the gravitational…

Much of a planet's composition could be determined right at the onset of formation. Laboratory experiments can constrain these early steps. This includes static tensile strength measurements or collisions carried out under Earth's gravity…

Earth and Planetary Astrophysics · Physics 2018-08-31 Gerhard Wurm

Recent discoveries of extrasolar planets at small orbital radii, or with significant eccentricities, indicate that interactions between massive planets and the disks of gas and dust from which they formed are vital for determining the final…

Astrophysics · Physics 2009-10-31 Philip J. Armitage , Brad M. S. Hansen

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

In this paper we review recent progress in our understanding of the chemical evolution of protoplanetary disks. Current observational constraints and theoretical modeling on the chemical composition of gas and dust in these systems are…

Astrophysics of Galaxies · Physics 2015-05-28 Dmitry A. Semenov

The formation of planetesimals was an integral part of the cascading series of processes that built the terrestrial planets. To illuminate planetesimal formation, here we develop a refined thermal evolution model to calculate the formation…

Earth and Planetary Astrophysics · Physics 2026-02-25 James Bryson , Hannah Sanderson , Francis Nimmo , Sanjana Sridhar , Gregory Brennecka , Yves Marrocchi , Jason Terry

These notes provide an introduction to the theory of the formation and early evolution of planetary systems. Topics covered include the structure, evolution and dispersal of protoplanetary disks; the formation of planetesimals, terrestrial…

Astrophysics · Physics 2017-02-22 Philip J. Armitage

We review the basic dynamics and accretion of planetesimals by showing N-body simulations. The orbits of planetesimals evolve through two-body gravitational relaxation: viscous stirring increases the random velocity and dynamical friction…

Earth and Planetary Astrophysics · Physics 2012-12-10 Eiichiro Kokubo , Shigeru Ida

Stars and planets both form by accreting material from a surrounding disk. Because they grow from the same material, theory predicts that there should be a relationship between their compositions. In this study, we search for a…

To study the terrestrial-type planet formation during the post oligarchic growth, the initial distributions of planetary embryos and planetesimals used in N-body simulations play an important role. Most of these studies typically use ad hoc…

Earth and Planetary Astrophysics · Physics 2015-11-18 M. P. Ronco , G. C. de Elía , O. M. Guilera

Circumstellar disks have long been regarded as windows into planetary systems. The advent of high sensitivity, high resolution imaging in the submillimetre where both the solid and gas components of disks can be detected opens up new…

Earth and Planetary Astrophysics · Physics 2016-03-23 Brenda C. Matthews , JJ Kavelaars

Understanding the chemical link between protoplanetary disks and planetary atmospheres is complicated by the fact that the popular targets in the study of disks and planets are widely separated both in space and time. The 5 Myr PDS 70…

Earth and Planetary Astrophysics · Physics 2023-06-28 A. J. Cridland , S. Facchini , E. F. van Dishoeck , M. Benisty

We present the results of planet formation N-body simulations based on a comprehensive physical model that includes planetary mass growth through mutual embryo collisions and planetesimal/boulder accretion, viscous disc evolution, planetary…

Earth and Planetary Astrophysics · Physics 2016-02-17 Gavin A. L. Coleman , Richard P. Nelson

In the standard planet formation scenario, planetesimals are assumed to form throughout the protoplanetary disk and to be smoothly distributed in the radial direction except for the snowline. Planetesimal growth has been investigated using…

Earth and Planetary Astrophysics · Physics 2025-04-09 Yuki Kambara , Eiichiro Kokubo

Recent exoplanet surveys revealed that for solar-type stars, close-in Super-Earths are ubiquitous and many of them are in multi-planet systems. These systems are more compact than the Solar System's terrestrial planets. However, there have…

Earth and Planetary Astrophysics · Physics 2023-01-04 Haruka Hoshino , Eiichiro Kokubo

The dynamics of planetesimals plays an important role in planet formation, because their velocity distribution sets the growth rate to larger bodies. When planetesimals form in protoplanetary discs, their orbits are nearly circular and…

Earth and Planetary Astrophysics · Physics 2020-11-25 Sebastian Lorek , Anders Johansen

The field of planet formation is in an exciting era, where recent observations of disks around low- to intermediate-mass stars made with state of the art interferometers and high-contrast optical and IR facilities have revealed a diversity…

Earth and Planetary Astrophysics · Physics 2022-03-21 A. Miotello , I. Kamp , T. Birnstiel , L. I. Cleeves , A. Kataoka

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