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Aerodynamic theory predicts that dust grains in protoplanetary disks will drift radially inward on comparatively short timescales. In this context, it has long been known that the presence of a gap opened by a planet can alter the dust…

Earth and Planetary Astrophysics · Physics 2018-02-28 Philipp Weber , Pablo Benítez-Llambay , Oliver Gressel , Leonardo Krapp , Martin E. Pessah

Protoplanetary disc mass is one of the most fundamental properties of a planet-forming system, as it sets the total mass budget available for planet formation. However, obtaining disc mass measurements remain challenging, since it is not…

Earth and Planetary Astrophysics · Physics 2026-02-17 Matthew Murray , Cassandra Hall , Hans Baehr , Jason Terry

A key problem in protoplanetary disc evolution is understanding the efficiency of dust radial drift. This process makes the observed dust disc sizes shrink on relatively short timescales, implying that discs started much larger than what we…

Earth and Planetary Astrophysics · Physics 2021-08-04 Claudia Toci , Giovanni Rosotti , Giuseppe Lodato , Leonardo Testi , Leon Trapman

Transition disks have dust-depleted inner regions and may represent an intermediate step of an on-going disk dispersal process, where planet formation is probably in progress. Recent millimetre observations of transition disks reveal…

Earth and Planetary Astrophysics · Physics 2014-11-19 P. Pinilla , M. de Juan Ovelar , S. Ataiee , M. Benisty , T. Birnstiel , E. F. van Dishoeck , M. Min

Observations with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Jansky Very Large Array (JVLA) have revealed many dust rings in protoplanetary disks, often interpreted as dust traps at gas pressure bumps. Previous studies…

Earth and Planetary Astrophysics · Physics 2025-07-15 Linhan Yang , Ya-Ping Li , Ruobing Dong , Kiyoaki Doi , Hauyu Baobab Liu , Pinghui Huang

Protoplanetary disks are dynamic objects, within which dust grains and gas are expected to be redistributed over large distances. Evidence for this redistribution is seen both in other protoplanetary disks and in our own Solar System, with…

Earth and Planetary Astrophysics · Physics 2019-11-11 William Misener , Sebastiaan Krijt , Fred J. Ciesla

In the context of planet formation, growth from micron-sized grains to kilometer-sized planetesimals is a crucial question. Since the dust growth rate depends on the amount of dust, realizing planet formation scenarios based on dust growth…

Earth and Planetary Astrophysics · Physics 2025-09-25 Ryoki Matsukoba , Eduard I. Vorobyov , Takashi Hosokawa

We consider the dynamics of dust and gas during the clearing of protoplanetary discs. We work within the context of a photoevaporation/viscous model for the evolution of the gas disc, and use a two-fluid model to study the dynamics of dust…

Astrophysics · Physics 2008-11-26 R. D. Alexander , P. J. Armitage

Protoplanetary discs are dynamic environments where the interplay between chemical processes and mass transport shapes the composition of gas and dust available for planet formation. We investigate the combined effects of volatile chemistry…

Context. Dust coagulation and fragmentation impact the structure and evolution of protoplanetary disks and set the initial conditions for planet formation. Dust grains dominate the opacities, they determine the cooling times of the gas,…

Earth and Planetary Astrophysics · Physics 2024-11-06 Thomas Pfeil , Til Birnstiel , Hubert Klahr

One of the main problems in planet formation, hampering the growth of small dust to planetesimals, is the so-called radial-drift barrier. Pebbles of cm to dm sizes are thought to drift radially across protoplanetary discs faster than they…

Earth and Planetary Astrophysics · Physics 2020-03-24 Anthony J. L. Garcia , Jean-François Gonzalez

In protoplanetary discs, the presence of dust traps can significantly alter the transport of solids from the outer to the inner regions, and hence they are often invoked as an explanation for the chemical diversity of inner discs observed…

Earth and Planetary Astrophysics · Physics 2026-04-15 Adrien Houge , Anders Johansen , Andrea Banzatti , Sierra Grant

This manuscript investigates the impact of key dust evolution parameters on dust retention and trapping in protoplanetary discs. Using models with and without pressure bumps, combined with radiative transfer simulations, images of the dust…

Earth and Planetary Astrophysics · Physics 2026-01-07 Paola Pinilla

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

How substructures and disk properties affect dust evolution and the delivery of solids and volatiles into planet-forming regions remains an open question. We present results from tailored dust evolution modeling of the AGE-PRO ALMA large…

We study the dynamics of a viscous protoplanetary disc hosting a population of dust grains with a range of sizes. We compute steady-state solutions, and show that the radial motion of both the gas and the dust can deviate substantially from…

Earth and Planetary Astrophysics · Physics 2018-11-26 Giovanni Dipierro , Guillaume Laibe , Richard Alexander , Mark Hutchison

Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine the environment for planet formation. I review the theory of protoplanetary disk evolution and its connection to observations. Substantial progress has…

Solar and Stellar Astrophysics · Physics 2011-08-25 Philip J. Armitage

It is often argued that gravitational instability of realistic protoplanetary discs is only possible at distances larger than $\sim 50$ au from the central star, requiring high disc masses and accretion rates, and that therefore disc…

Earth and Planetary Astrophysics · Physics 2025-09-12 Hans Lee , Sergei Nayakshin , Richard A. Booth

We review advances in the modeling of protoplanetary disks. This review will focus on the regions of the disk beyond the dust sublimation radius, i.e. beyond 0.1 - 1 AU, depending on the stellar luminosity. We will be mostly concerned with…

Astrophysics · Physics 2007-05-23 C. P. Dullemond , D. Hollenbach , I. Kamp , P. D'Alessio

Observational data on the dust content of circumstellar disks show that the median dust content in disks around pre-main sequence stars in nearby star forming regions seem to increase from about 1 Myr to about 2 Myr, and then decline with…

Earth and Planetary Astrophysics · Physics 2022-03-01 Lia Marta Bernabò , Diego Turrini , Leonardo Testi , Francesco Marzari , Danai Polychroni