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We aim to understand under which conditions a low mass planet can open a gap in viscous dusty protoplanetary discs. For this purpose, we extend the theory of dust radial drift to include the contribution from the tides of an embedded planet…

Solar and Stellar Astrophysics · Physics 2017-06-21 Giovanni Dipierro , Guillaume Laibe

Dust gaps and rings appear ubiquitous in bright protoplanetary disks. Disk-planet interaction with dust-trapping at the edges of planet-induced gaps is one plausible explanation. However, the sharpness of some observed dust rings indicate…

Earth and Planetary Astrophysics · Physics 2021-05-19 Jiaqing Bi , Min-Kai Lin , Ruobing Dong

Transitional and pre--transitional disks can be explained by a number of mechanisms. This work aims to find a single observationally detectable marker that would imply a planetary origin for the gap and, therefore, indirectly indicate the…

Earth and Planetary Astrophysics · Physics 2015-06-17 Jack Dobinson , Zoë M. Leinhardt , Sarah E. Dodson-Robinson , Nick A. Teanby

We calculate simulated images of disks perturbed by embedded small planets. These 10-50 M_Earth bodies represent the growing cores of giant planets. We examine scattered light and thermal emission from these disks over a range of…

Earth and Planetary Astrophysics · Physics 2009-07-22 Hannah Jang-Condell

Knowing the masses and sizes of protoplanetary disks is of fundamental importance for the contemporary theories of planet formation. However, their measurements are associated with large uncertainties. In this proof of concept study, we…

Earth and Planetary Astrophysics · Physics 2026-01-21 Eduard I. Vorobyov , Aleksandr Skliarevskii , Vardan Elbakyan , Michael Dunham , Manuel Guedel

We investigate the possibility to find evidence for planets in circumstellar disks by infrared and submillimeter interferometry. Hydrodynamical simulations of a circumstellar disk around a solar-type star with an embedded planet of 1…

Astrophysics · Physics 2007-05-23 S. Wolf , F. Gueth , Th. Henning , W. Kley

Protoplanets may be born into dust-rich environments if planetesimals formed through streaming or gravitational instabilities, or if the protoplanetary disc is undergoing mass loss due to disc winds or photoevaporation. Motivated by this…

Earth and Planetary Astrophysics · Physics 2018-05-08 Jhih-Wei Chen , Min-Kai Lin

The connection between the nature of a protoplanetary disk and that of a debris disk is not well understood. Dust evolution, planet formation, and disk dissipation likely play a role in the processes involved. We aim to reconcile both…

Earth and Planetary Astrophysics · Physics 2021-11-17 Arnaud Michel , Nienke van der Marel , Brenda Matthews

We explore the application of machine learning based on mixture density neural networks (MDNs) to the interior characterization of low-mass exoplanets up to 25 Earth masses constrained by mass, radius, and fluid Love number $k_2$. We create…

The aim of this paper is to study the vertical profile of small dust particles in protoplanetary discs in which angular momentum transport is due to MHD turbulence driven by the magnetorotational instability. We consider particle sizes that…

Earth and Planetary Astrophysics · Physics 2009-11-13 Sebastien Fromang , Richard P. Nelson

We present the first 2D hydrodynamical finite volume simulations in which dust is fully coupled with the gas, including its back-reaction onto it, and at the same time the dust size is evolving according to coagulation and fragmentation…

Earth and Planetary Astrophysics · Physics 2018-09-17 Tomas Tamfal , Joanna Drazkowska , Lucio Mayer , Clément Surville

In this article we review the methods used to determine the gas and dust masses of protoplanetary disks, with an emphasis on the lesser characterized total gas mass. Our review encompasses all the indirect tracers and the methodology that…

Solar and Stellar Astrophysics · Physics 2026-05-08 Edwin A. Bergin , Jonathan P. Williams

Theoretical models of grain growth predict dust properties to change as a function of protoplanetary disk radius, mass, age and other physical conditions. We lay down the methodology for a multi-wavelength analysis of (sub-)mm and cm…

Direct observations of young stellar objects are important to test established theories of planet formation. PDS 70 is one of the few cases where robust evidence favours the presence of two planetary mass companions inside the gap of the…

Earth and Planetary Astrophysics · Physics 2022-04-27 B. Portilla-Revelo , I. Kamp , Ch. Rab , E. F. van Dishoeck , M. Keppler , M. Min , G. A. Muro-Arena

Stellar flybys are likely to be common in young star-forming regions and could be responsible for substructures observed in protoplanetary discs. Using three-dimensional smoothed particle hydrodynamics simulations, we study dust trapping in…

Earth and Planetary Astrophysics · Physics 2025-10-08 Vasundhara R. Prasad , Cristiano Longarini , Cathie J. Clarke

Context. Two protoplanets have recently been discovered within the PDS 70 protoplanetary disk. JWST/NIRCam offers a unique opportunity to characterize them and their birth environment at wavelengths difficult to access from the ground.…

Measuring the amount of gas and dust in protoplanetary disks is a key challenge in planet formation studies. Here we provide a new set of dust depletion factors and relative mass surface densities of gas and dust for the innermost regions…

Earth and Planetary Astrophysics · Physics 2022-06-29 Adam S. Jermyn , Mihkel Kama

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…

Investigating the dust grain size and its dependence on substructures in protoplanetary disks is a crucial step in understanding the initial process of planet formation. Spectral indices derived from millimeter observations are used as a…

Earth and Planetary Astrophysics · Physics 2024-10-08 Dafa Li , Yao Liu , Hongchi Wang , Min Fang , Lei Wang

In the recent years, sub/mm observations of protoplanetary disks have discovered an incredible diversity of substructures in the dust emission. An important result was the finding that dust grains of mm size are embedded in very thin dusty…

Earth and Planetary Astrophysics · Physics 2021-06-23 Mario Flock , Andrea Mignone
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