Pebble trapping in vortices: three-dimensional simulations

Abstract

Disk vortices have been heralded as promising routes for planet formation due to their ability to trap significant amounts of pebbles. While the gas motions and trapping properties of two-dimensional vortices have been studied in enough detail in the literature, pebble trapping in three dimensions has received less attention, due to the higher computational demand. Here we use the Pencil Code to study 3D vortices generated by convective overstability and the trapping of solids within them. The gas is unstratified whereas the pebbles settle to the midplane due to vertical gravity. We find that for pebbles of normalized friction times of St = 0.05 and St = 1, and dust-to-gas ratio $\epsilon =0.01$, the vortex column in the midplane is strongly perturbed. Yet, when the initial dust-to-gas ratio is decreased the vortices remain stable and function as efficient pebble traps. Streaming instability is triggered even for the lowest dust-to-gas ratio (${\epsilon }_0=10^{-4}$) and smallest pebble sizes (St = 0.05) we assumed, showing a path for planetesimal formation in vortex cores from even extremely subsolar metallicity. To estimate if the reached overdensities can be held together solely by their own gravity we estimate the Roche density at different radii. Depending on disk model and radial location of the pebble clump we do reach concentrations higher than the Roche density. We infer that if self-gravity was included for the pebbles, then gravitational collapse would likely occur.

arXiv comment17 pages, 11 figures, accepted to ApJ

References in corpus (54)

• Rapid planetesimal formation in turbulent circumstellar discs
• Rossby Wave Instability of Keplerian Accretion Disks
• A Major Asymmetric Dust Trap in a Transition Disk
• The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier
• The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments
• Linear and nonlinear evolution of the vertical shear instability in accretion discs
• Zonal Flows and Long-Lived Axisymmetric Pressure Bumps in Magnetorotational Turbulence
• Hydromagnetic turbulence in computer simulations
• The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained
• The subcritical baroclinic instability in local accretion disc models
• Planet formation bursts at the borders of the dead zone in 2D numerical simulations of circumstellar disks
• Particle Aggregation in a turbulent Keplerian flow
• Convective Overstability in radially stratified accretion disks under thermal relaxation
• Standing on the shoulders of giants: Trojan Earths and vortex trapping in low mass self-gravitating protoplanetary disks of gas and solids
• Dust sedimentation and self-sustained Kelvin-Helmholtz turbulence in protoplanetary disk mid-planes. I. Radially symmetric simulations
• Steady state of dust distributions in disk vortices: Observational predictions and applications to transitional disks
• High-resolution simulations of planetesimal formation in turbulent protoplanetary discs
• Vertical shear instability in accretion disc models with radiation transport
• On the Stability of Elliptical Vortices in Accretion Discs
• Vortices In Circumstellar Disks
• Zombie Vortex Instability I: A Purely Hydrodynamic Instability to Resurrect the Dead Zones of Protoplanetary Disks
• Formation of Giant Planets by Concurrent Accretion of Solids and Gas inside an Anti-Cyclonic Vortex
• Effects of dust feedback on vortices in protoplanetary disks
• On the diversity of asymmetries in gapped protoplanetary disks
• Embryos grown in the dead zone: Assembling the first protoplanetary cores in low mass self-gravitating circumstellar disks of gas and solids
• Particle Trapping and Streaming Instability in Vortices
• Dust-trapping Rossby vortices in protoplanetary disks
• Convective overstability in accretion disks: 3D linear analysis and nonlinear saturation
• Rossby Wave Instability and three-dimensional vortices in accretion disks
• The baroclinic instability in the context of layered accretion. Self-sustained vortices and their magnetic stability in local compressible unstratified models of protoplanetary disks
• Vortex migration in protoplanetary disks
• Formation and long-term evolution of 3D vortices in protoplanetary discs
• The initial conditions for planet formation: Turbulence driven by hydrodynamical instabilities in disks around young stars
• Gas and dust dynamics in starlight-heated protoplanetary disks
• Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks
• Global magnetohydrodynamical models of turbulence in protoplanetary disks I. A cylindrical potential on a Cartesian grid and transport of solids
• A Parameter Study for Baroclinic Vortex Amplification
• Vortex formation in protoplanetary discs induced by the vertical shear instability
• Rossby wave instability in locally isothermal and polytropic disks: three-dimensional linear calculations
• Rossby Wave Instability in three dimensional discs
• Vortex Formation and Survival in Protoplanetary Disks subject to Vertical Shear Instability
• Vortex and spiral instabilities at gap edges in three-dimensional self-gravitating disc-satellite simulations
• Rossby wave instability does not require sharp resistivity gradients
• Dust capture and long-lived density enhancements triggered by vortices in 2D protoplanetary disks
• High Resolution Parameter Study of the Vertical Shear Instability
• Long-Lived Dust Asymmetries at Dead Zone Edges in Protoplanetary Disks
• Zombie Vortex Instability. II. Thresholds to Trigger Instability and the Properties of Zombie Turbulence in the Dead Zones of Protoplanetary Disks
• Zombie Vortex Instability. III. Persistence with Nonuniform Stratification and Radiative Damping
• Cm-wavelength observations of MWC758: resolved dust trapping in a vortex
• Non-barotropic linear Rossby wave instability in three-dimensional disks
• Dust concentration and emission in protoplanetary disks vortices
• Orbital advection with magnetohydrodynamics and vector potential
• Phurbas: An Adaptive, Lagrangian, Meshless, Magnetohydrodynamics Code. II. Implementation and Tests
• Elliptic and magneto-elliptic instabilities of disk vortices

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• No self-shadowing instability in 2D radiation-hydrodynamical models of irradiated protoplanetary disks
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