Growing and Trapping Pebbles with Fragile Collisions of Particles in Protoplanetary Disks

Abstract

[abridged] Recent laboratory experiments indicate that destructive collisions of icy dust particles occur with much lower velocities than previously thought. When these new velocities are considered from laboratory experiments in dust evolution models, a growth to pebble sizes in protoplanetary disks (PPDs) is difficult. This may contradict (sub-)mm observations and challenge the formation of planetesimals and planets. We investigate the conditions that are required in dust evolution models for growing and trapping pebbles in PPDs when the fragmentation speed is 1ms${}^{-1}$ in the entire disk. We distinguish the parameters controlling the effects of turbulent velocities, vertical stirring, radial diffusion, and gas viscous evolution, always assuming that particles cannot diffuse faster (radially or vertically) than the gas. To form pebbles and produce effective particle trapping, the parameter that controls the particle turbulent velocities must be small (${\delta }_t\lesssim 10^{-4}$). In these cases, the vertical settling can limit the formation of pebbles, which also prevents particle trapping. Therefore the parameter that sets the vertical settling of the grains must be ${\delta }_z<10^{-3}$. Our results suggest that different combinations of the particle and gas diffusion parameters can lead to a large diversity of millimeter fluxes and dust-disk radii. When pebble formation occurs and trapping is efficient, gaps and rings have higher contrast at mm-emission than in the NIR. In the case of inefficient trapping, structures are also formed at the two wavelengths, producing deeper and wider gaps in the NIR. Our results highlight the importance of obtaining observational constraints of gas and particle diffusion parameters and the properties of gaps at short and long wavelengths to better understand basic features of PPDs and the origin of the structures that are observed in these objects.

Accepted for publication in A&A

References in corpus (27)

• Coagulation, fragmentation and radial motion of solid particles in protoplanetary disks
• Gas- and dust evolution in protoplanetary disks
• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• Closed-form expressions for particle relative velocities induced by turbulence
• Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
• The stickiness of micrometer-sized water-ice particles
• A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO${}^{+}$
• A Millimeter Continuum Size-Luminosity Relationship for Protoplanetary Disks
• One Solution to the Mass Budget Problem for Planet Formation: Optically Thick Disks with Dust Scattering
• Contacts of Water Ice in Protoplanetary Disks - Laboratory Experiments
• Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
• Convective Overstability in radially stratified accretion disks under thermal relaxation
• Global MHD simulations of stratified and turbulent protoplanetary discs. I. Model properties
• Vertical shear instability in accretion disc models with radiation transport
• The anomalously low (sub)millimeter spectral indices of some protoplanetary disks may be explained by dust self-scattering
• Testing the theory of grain growth and fragmentation by millimeter observations of protoplanetary disks
• Dust Density Distribution and Imaging Analysis of Different Ice Lines in Protoplanetary Disks
• Turbulence sets the length scale for planetesimal formation: Local 2D simulations of streaming instability and planetesimal formation
• Convective overstability in accretion disks: 3D linear analysis and nonlinear saturation
• Including Dust Coagulation in Hydrodynamic Models of Protoplanetary Disks: Dust Evolution in the Vicinity of a Jupiter-mass Planet
• Gas and dust dynamics in starlight-heated protoplanetary disks
• Sticking Properties of Silicates in Planetesimal Formation Revisited
• Planetesimal Population Synthesis: Pebble Flux Regulated Planetesimal Formation
• Ice Grain Collisions in Comparison: CO${}_2$, H${}_2$O and their Mixtures
• Millimetre spectral indices of transition disks and their relation to the cavity radius
• Investigating dust trapping in transition disks with millimeter-wave polarization
• Millimeter Spectral Indices and Dust Trapping By Planets in Brown Dwarf Disks

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• Millimeter Gap Contrast as a Probe for Turbulence Level in Protoplanetary Disks
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• Toward a Population Synthesis of Disks and Planets I. Evolution of Dust with Entrainment in Winds and Radiation Pressure
• TriPoD: Tri-Population size distributions for Dust evolution. Coagulation in vertically integrated hydrodynamic simulations of protoplanetary disks
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• The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): VI. Comparison of Dust Evolution Models to AGE-PRO Observations
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