Outward Motion of Porous Dust Aggregates by Stellar Radiation Pressure in Protoplanetary Disks

Abstract

We study the dust motion at the surface layer of protoplanetary disks. Dust grains in surface layer migrate outward due to angular momentum transport via gas-drag force induced by the stellar radiation pressure. In this study, we calculate mass flux of the outward motion of compact grains and porous dust aggregates by the radiation pressure. The radiation pressure force for porous dust aggregates is calculated using the T-Matrix Method for the Clusters of Spheres. First, we confirm that porous dust aggregates are forced by strong radiation pressure even if they grow to be larger aggregates in contrast to homogeneous and spherical compact grains to which efficiency of radiation pressure becomes lower when their sizes increase. In addition, we find that the outward mass flux of porous dust aggregates with monomer size of 0.1 $\mu$m is larger than that of compact grains by an order of magnitude at the disk radius of 1 AU, when their sizes are several microns. This implies that large compact grains like calcium-aluminum rich inclusions (CAIs) are hardly transported to outer region by stellar radiation pressure, whereas porous dust aggregates like chondritic-porous interplanetary dust particles (CP-IDPs) are efficiently transported to comet formation region. Crystalline silicates are possibly transported in porous dust aggregates by stellar radiation pressure from inner hot region to outer cold cometary region in the protosolar nebula.

arXiv comment9 pages, 5 figures, 1 table, accepted for publication in ApJ

References in corpus (28)

• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• Infrared Emission from Interstellar Dust. II. The Diffuse Interstellar Medium
• The absence of crystalline silicates in the diffuse interstellar medium
• Radial Flow of Dust Particles in Accretion Disks
• The effect of dust settling on the appearance of protoplanetary disks
• Rapid Coagulation of Porous Dust Aggregates Outside the Snow Line: A Pathway to Successful Icy Planetesimal Formation
• A Spitzer view of protoplanetary disks in the gamma Velorum cluster
• Dust Migration and Morphology in Optically Thin Circumstellar Gas Disks
• The formation and evolution of planetary systems: Grain growth and chemical processing of dust in T Tauri systems
• Annealing of Silicate Dust by Nebular Shocks at 10 AU
• Episodic formation of cometary material in the outburst of a solar-like young star
• Dust evolution in protoplanetary disks around Herbig Ae/Be stars - The Spitzer view
• Crystalline silicates and dust processing in the protoplanetary disks of the Taurus young cluster
• Opacity of fluffy dust aggregates
• Two-Dimensional Transport of Solids in Viscous Protoplanetary Disks
• C2D Spitzer-IRS spectra of disks around T Tauri stars. IV. Crystalline silicates
• Two different evolutionary types of comets proved by polarimetric and infrared properties of their dust
• The 2008 outburst of EX Lup - silicate crystals in motion
• Particle transport in evolving protoplanetary disks: Implications for results from Stardust
• Meridional circulation in turbulent protoplanetary disks
• Surface Outflow in Optically Thick Dust Disks by the Radiation Pressure
• Radiation pressure mixing of large dust grains in protoplanetary disks
• Mid-Infrared Spectrophotometric Observations of Fragments B and C of Comet 73P/Schwassmann-Wachmann 3
• Destruction of massive fragments in protostellar disks and crystalline silicate production
• Infrared Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 using the Spitzer Space Telescope
• The radial distribution of dust species in young brown dwarf disks
• Dust in Comet C/2007 N3 (Lulin)
• Revisiting Jovian-Resonance Induced Chondrule Formation

Cited by in corpus (11)

• Modelling mid-infrared molecular emission lines from T Tauri stars
• Water delivery from cores to disks: deuteration as a probe of the prestellar inheritance of H2O
• Population synthesis of exocometary gas around A stars
• The chemical signature of surviving Population III stars in the Milky Way
• Mid-infrared spectroscopic observations of comet 17P/Holmes immediately after its great outburst in October 2007
• Inner dusty regions of protoplanetary discs -- II. Dust dynamics driven by radiation pressure and disc winds
• Light Scattering and Thermal Emission by Primitive Dust Particles in Planetary Systems
• Dynamics of small grains in transitional discs
• Dust Production Rates in the Fomalhaut Debris Disk from SOFIA/FORCAST Mid-infrared Imaging
• Inner dusty regions of protoplanetary discs -- III. The role of non-radial radiation pressure in dust dynamics
• On the crystallinity of silicate dust in evolving protoplanetary disks due to magnetically driven disk winds