Size and density sorting of dust grains in SPH simulations of protoplanetary disc II: Fragmentation

Abstract

Grain growth and fragmentation are important processes in building up large dust aggregates in protoplanetary discs. Using a 3D two-phase (gas-dust) SPH code, we investigate the combined effects of growth and fragmentation of a multi-phase dust with different fragmentation thresholds in a time-evolving disc. We find that our fiducial disc, initially in a fragmentation regime, moves toward a pure-growth regime in a few thousands years. Timescales change as a function of the disc and dust properties. When fragmentation is efficient, it produces, in different zones of the disc, Fe/Si and rock/ice ratios different from those predicted when only pure growth is considered. Chemical fractionation and the depletion/enrichment in iron observed in some chondrites can be linked to the size-density sorting and fragmentation properties of precursor dusty grains . We suggest that aggregation of chondritic components could have occurred where/when fragmentation was not efficient if their aerodynamical sorting has to be preserved. Chondritic components would allow aerodynamical sorting in a fragmentation regime only if they have similar fragmentation properties. We find that, in the inner disc, and for the same interval of time, fragmenting dust can grow larger when compared to the size of grains predicted by pure growth. This counter-intuitive behaviour is due to the large amount of dust which piles up in a fragmenting zone followed by the rapid growth that occurs when this zone transitions to a pure growth regime. As an important consequence, dust can overcome the radial-drift barrier within a few thousands years.

arXiv commentAccepted, MNRAS. ArXiv version, some figures compressed to fit the max allowed size

References in corpus (58)

• Rapid planetesimal formation in turbulent circumstellar discs
• A simple model for the evolution of the dust population in protoplanetary disks
• Coagulation, fragmentation and radial motion of solid particles in protoplanetary disks
• Dust coagulation in protoplanetary disks: a rapid depletion of small grains
• Gas- and dust evolution in protoplanetary disks
• Accretion Disks around Young Objects. I. The Detailed Vertical Structure
• 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
• Dynamics of Protoplanetary Disks
• Accretion Disks Around Young Objects. II. Tests of Well-Mixed Models with Ism Dust
• The effect of dust settling on the appearance of protoplanetary disks
• Dust and Gas in the disc of HL Tauri: Surface density, dust settling, and dust-to-gas ratio
• Trapping dust particles in the outer regions of protoplanetary disks
• Size-selective concentration of chondrules and other small particles in protoplanetary nebula turbulence
• The TW Hya Disk at 870 microns: Comparison of CO and Dust Radial Structures
• Planetesimal formation starts at the snow line
• On planet formation in HL Tau
• Fluffy dust forms icy planetesimals by static compression
• Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
• Planets opening dust gaps in gas disks
• Three radial gaps in the disk of TW Hydrae imaged with SPHERE
• Planetesimal formation around the snow line in MRI-driven turbulent protoplanetary disks
• Gas and Dust Emission at the Outer Edge of Protoplanetary Disks
• An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission
• VLA Imaging of the Disk Surrounding the Nearby Young Star TW Hya
• On the structure of the transition disk around TW Hya
• Dusty gas with SPH - I. Algorithm and test suite
• Self-induced dust traps: overcoming planet formation barriers
• High Velocity Dust Collisions: Forming Planetesimals in a Fragmentation Cascade with Final Accretion
• Planet gaps in the dust layer of 3D protoplanetary disks: I. Hydrodynamical simulations of T Tauri disks
• Dust distribution in protoplanetary disks - Vertical settling and radial migration
• ALMA images of discs: are all gaps carved by planets?
• Disks around the Young Stars TW Hya and HD 100546 Imaged at 3.4 Millimeters with the Australia Telescope Compact Array
• The effect of a planet on the dust distribution in a 3D protoplanetary disk
• Revisiting the "radial-drift barrier" of planet formation and its relevance in observed protoplanetary discs
• Photophoretic separation of metals and silicates: the formation of Mercury like planets and metal depletion in chondrites
• On the stratified dust distribution of the GG Tau circumbinary ring
• Planet gaps in the dust layer of 3D protoplanetary disks. II. Observability with ALMA
• On the aerodynamic redistribution of chondrite components in protoplanetary disks
• The accumulation and trapping of grains at planet gaps: effects of grain growth and fragmentation
• Meridional circulation in turbulent protoplanetary disks
• Growth and fragmentation of centimetre-sized dust aggregates: the dependence on aggregate size and porosity
• SPH simulations of grain growth in protoplanetary disks
• A coagulation-fragmentation model for the turbulent growth and destruction of preplanetesimals
• Smoothed particle hydrodynamics simulations of gas and dust mixtures
• Growing dust grains in protoplanetary discs - II. The Radial drift barrier problem
• Hunting for planets in the HL Tau disk
• The quasi-universality of chondrule size as a constraint for chondrule formation models
• Experiments on the Photophoretic Motion of Chondrules and Dust Aggregates - Indications for the Transport of Matter in Protoplanetary Disks
• Coagulation of small grains in disks: the influence of residual infall and initial small-grain content
• Effects of photophoresis on the dust distribution in a 3D protoplanetary disc
• 2D condensation model for the inner Solar Nebula: an enstatite-rich environment
• Size and density sorting of dust grains in SPH simulations of protoplanetary discs
• Growing dust grains in protoplanetary discs - III. Vertical settling
• Characterisation of global flow and local fluctuations in 3D SPH simulations of protoplanetary discs
• Collisions of solid ice in planetesimal formation
• Constraints on the height of the inner disk rim in pre-main-sequence stars
• Growing dust grains in protoplanetary discs - I. Radial drift with toy growth models

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• Evolution of porous dust grains in protoplanetary discs -- I. Growing grains
• Self-Induced Dust Traps Around Snow Lines in Protoplanetary Discs
• Dust growth, fragmentation and self-induced dust traps in PHANTOM
• Gravitoviscous Protoplanetary Discs with a Dust Component. IV. Disc Outer Edges, Spectral Indices, and Opacity Gaps
• Presolar grain dynamics: creating nucleosynthetic variations through a combination of drag and viscous evolution
• Coagulation-Fragmentation Equilibrium for Charged Dust: Abundance of Submicron Grains Increases Dramatically in Protoplanetary Disks