New growth mechanism of dust grains in protoplanetary disks with magnetically driven disk winds

Abstract

We discovered a new growth mode of dust grains to km-sized bodies in protoplanetary disks that evolve by viscous accretion and magnetically driven disk winds (MDWs). We solved an approximate coagulation equation of dust grains with time-evolving disks that consist of both gas and solid components by a one-dimensional model. With the grain growth, all solid particles initially drift inward toward the central star by the gas drag force. However, the radial profile of gas pressure, $P$, is modified by the MDW that disperses the gas in an inside-out manner. Consequently, a local concentration of solid particles is created by the converging radial flux of drifting dust grains at the location with the convex upward profile of $P$. When the dimensionless stopping time, $\mathrm{St}$, there exceeds unity, the solid particles spontaneously reach the growth dominated state because of the positive feedback between the suppressed radial drift and the enhanced accumulation of dust particles that drift from the outer part. Once the solid particles are in the drift limited state, the above-mentioned condition of $\mathrm{St}\gtrsim 1$ for the dust growth is equivalent with \begin{equation} Σ_{\rm d}/Σ_{\rm g}\gtrsim η, \nonumber \end{equation} where ${\Sigma }_{\mathrm{d}}/{\Sigma }_{\mathrm{g}}$ is the dust-to-gas surface-density ratio and $\eta$ is dimensionless radial pressure-gradient force. As a consequence of the successful growth of dust grains, a ring-like structure containing planetesimal-sized bodies is formed at the inner part of the protoplanetary disks. Such a ring-shaped concentration of planetesimals is expected to play a vital role in the subsequent planet formation.

arXiv comment24 pages, 10 figures, 1 table, accepted for publication in The Astrophysical Journal

References in corpus (72)

• Streaming Instabilities in Protoplanetary Disks
• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• A simple model for the evolution of the dust population in protoplanetary disks
• Gas- and dust evolution in protoplanetary disks
• Resolved Images of Large Cavities in Protoplanetary Transition Disks
• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• Rossby Wave Instability of Keplerian Accretion Disks
• Wind-driven Accretion in Protoplanetary Disks. I: Suppression of the Magnetorotational Instability and Launching of the Magnetocentrifugal Wind
• Photoevaporation of protoplanetary discs II: evolutionary models and observable properties
• Protoplanetary Disk Turbulence Driven by the Streaming Instability: Non-Linear Saturation and Particle Concentration
• Closed-form expressions for particle relative velocities induced by turbulence
• Radial Flow of Dust Particles in Accretion Disks
• Rapid Coagulation of Porous Dust Aggregates Outside the Snow Line: A Pathway to Successful Icy Planetesimal Formation
• Magnetorotational Instability in Protoplanetary Disks. II. Ionization State and Unstable Regions
• Observations of gas flows inside a protoplanetary gap
• Radiation-Hydrodynamic Models of X-Ray & EUV Photoevaporating Protoplanetary Discs
• Which jet launching mechanism(s) in TTauri stars?
• On the theory of disc photoevaporation
• Asymmetric features in the protoplanetary disk MWC758
• Angular Momentum Transport by MHD Turbulence in Accretion Disks: Gas Pressure Dependence of the Saturation Level of the Magnetorotational Instability
• Time-Evolution of Viscous Circumstellar Disks due to Photoevaporation by FUV, EUV and X-ray Radiation from the Central Star
• Disk Winds Driven by Magnetorotational Instability and Dispersal of Proto-Planetary Disks
• Global simulations of protoplanetary disks with net magnetic flux: I. Non-ideal MHD case
• Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
• Direct Imaging of Fine Structures in Giant Planet Forming Regions of the Protoplanetary Disk around AB Aurigae
• Towards a Global Evolutionary Model of Protoplanetary Disks
• Evolution of Protoplanetary Discs with Magnetically Driven Disc Winds
• Close-in planetesimal formation by pile-up of drifting pebbles
• Trapping Solids at the Inner Edge of the Dead Zone: 3-D Global MHD Simulations
• On the water delivery to terrestrial embryos by ice pebble accretion
• Global Simulations of the Inner Regions of Protoplanetary Disks with Comprehensive Disk Microphysics
• Evolution of Snow Line in Optically Thick Protoplanetary Disks: Effects of Water Ice Opacity and Dust Grain Size
• The origin of crystalline silicates in the Herbig Be star HD100546 and in comet Hale-Bopp
• Planet formation bursts at the borders of the dead zone in 2D numerical simulations of circumstellar disks
• Adding particle collisions to the formation of asteroids and Kuiper belt objects via streaming instabilities
• Protoplanetary Disk Winds by Magnetorotational Instability : Formation of an Inner Hole and a Crucial Assist for Planet Formation
• Magnetically driven accretion in protoplanetary discs
• The Impact of Dust Evolution and Photoevaporation on Disk Dispersal
• Local Enhancement of Surface Density in the Protoplanetary Ring Surrounding HD 142527
• Wind-driven Accretion in Protoplanetary Disks --- II: Radial Dependence and Global Picture
• The formation of rings and gaps in magnetically coupled disk-wind systems: ambipolar diffusion and reconnection
• Asymptotically stable numerical method for multispecies momentum transfer: gas and multifluid-dust test suite and implementation in FARGO3D
• Self-induced dust traps: overcoming planet formation barriers
• On Gas-Drag Induced Rapid Migration of Solids in a Non-Uniform Solar Nebula
• Cohesion of Amorphous Silica Spheres: Toward a Better Understanding of the Coagulation Growth of Silicate Dust Aggregates
• The magnetorotational instability as a jet launching mechanism
• Global Simulations of Protoplanetary Disk Outflows with Coupled Non-ideal Magnetohydrodynamics and Consistent Thermochemistry
• Embryos grown in the dead zone: Assembling the first protoplanetary cores in low mass self-gravitating circumstellar disks of gas and solids
• Planetary Growth with Collisional Fragmentation and Gas Drag
• Sticking Properties of Silicates in Planetesimal Formation Revisited
• Heating and Cooling Protostellar Disks
• Global Hydromagnetic Simulations of Protoplanetary Disks with Stellar Irradiation and Simplified Thermochemistry
• Radiation hydrodynamics simulations of photoevaporation of protoplanetary disks II: Metallicity dependence of UV and X-ray photoevaporation
• Parametric Study of the Rossby Wave Instability in a Two-Dimensional Barotropic Disk
• The link between disc dispersal by photoevaporation and the semi-major axis distribution of exoplanets
• Radiation Hydrodynamics Simulations of Photoevaporation of Protoplanetary Disks by Ultra Violet Radiation: Metallicity Dependence
• Gas and multi-species dust dynamics in viscous protoplanetary discs: the importance of the dust back-reaction
• The formation of rings and gaps in wind-launching non-ideal MHD disks: three-dimensional simulations
• Dispersal of protoplanetary disks by the combination of magnetically driven and photoevaporative winds
• Dust and gas density evolution at a radial pressure bump in protoplanetary disks
• Low abundance, strong features: Window-dressing crystalline forsterite in the disk wall of HD 100546
• From Planetesimals to Planets in Turbulent Protoplanetary Disks I. Onset of Runaway Growth
• Impacts of dust feedback on a dust ring induced by a planet in a protoplanetary disk
• Self-organisation in protoplanetary disks: global, non-stratified Hall-MHD simulations
• A Tail Structure Associated with Protoplanetary Disk around SU Aurigae
• Dust Dynamics in Protoplanetary Disk Winds Driven by Magneto-Rotational Turbulence: A Mechanism for Floating Dust Grains with Characteristic Sizes
• The abundance and thermal history of water ice in the disk surrounding HD142527 from the DIGIT Herschel Key Program
• Structure Formation in a Young Protoplanetary Disk by a Magnetic Disk Wind
• Dust segregation in Hall-dominated turbulent protoplanetary disks
• Parametric Study of the Rossby Wave Instability in a Two-dimensional Barotropic Disk II: Non-Linear Calculations
• Electron Heating in the Magnetorotational Instability: Implications for Turbulence Strength in Outer Regions of Protoplanetary Disks

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• Coagulation Instability in Protoplanetary Disks: A Novel Mechanism Connecting Collisional Growth and Hydrodynamical Clumping of Dust Particles
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• Effective dust growth in laminar circumplanetary discs with magnetic wind-driven accretion
• Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks II: Dust Ring Formation Mediated by Backreaction and Fragmentation
• Dust ring and gap formation by gas flow induced by low-mass planets embedded in protoplanetary disks $\mathrm{I}$. Steady-state model
• Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks I: First Numerical Study of Accelerated Dust Growth and Dust Concentration at Outer Radii
• Planetesimal formation at the gas pressure bump following a migrating planet II. Effects of dust growth
• Modelling the secular evolution of proto-planetary disc dust sizes -- A comparison between the viscous and magnetic wind case
• Early Initiation of Inner Solar System Formation at Dead-Zone Inner Edge
• On the crystallinity of silicate dust in evolving protoplanetary disks due to magnetically driven disk winds