Effects of photophoresis on the dust distribution in a 3D protoplanetary disc

Abstract

Photophoresis is a physical process based on momentum exchange between an illuminated dust particle and its gaseous environment. Its net effect in protoplanetary discs (PPD) is the outward transport of solid bodies from hot to cold regions. This process naturally leads to the formation of ring-shaped features where dust piles up. In this work, we study the dynamical effects of photophoresis in PPD by including the photophoretic force in the two-fluid (gas+dust) smoothed particle hydrodynamics (SPH) code developed by Barrière-Fouchet et al. (2005). We find that the conditions of pressure and temperature encountered in the inner regions of PPD result in important photophoretic forces, which dramatically affect the radial motion of solid bodies. Moreover, dust particles have different equilibrium locations in the disc depending on their size and their intrinsic density. The radial transport towards the outer parts of the disc is more efficient for silicates than for iron particles, which has important implications for meteoritic composition. Our results indicate that photophoresis must be taken into account in the inner regions of PPD to fully understand the dynamics and the evolution of the dust composition.

11 pages, 10 figures, 2 tables

References in corpus (10)

• SPLASH: An interactive visualisation tool for Smoothed Particle Hydrodynamics simulations
• Accretion disc viscosity: how big is alpha?
• Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
• The effect of a planet on the dust distribution in a 3D protoplanetary disk
• Planet gaps in the dust layer of 3D protoplanetary disks. II. Observability with ALMA
• The accumulation and trapping of grains at planet gaps: effects of grain growth and fragmentation
• Experiments on the Photophoretic Motion of Chondrules and Dust Aggregates - Indications for the Transport of Matter in Protoplanetary Disks
• Temperature Fluctuations driven by Magnetorotational Instability in Protoplanetary Disks
• Photophoretic Structuring of Circumstellar Dust Disks
• Constraints on the height of the inner disk rim in pre-main-sequence stars

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