Effect of turbulence on collisions of dust particles with planetesimals in protoplanetary disks

• Published in: Astronomy and astrophysics (Berlin) Vol. 589; p. A129
• Main Authors: Homann, H., Guillot, T., Bec, J., Ormel, C. W., Ida, S., Tanga, P.
• Format: Journal Article
• Language: English
• Published: EDP Sciences 01.05.2016
• Subjects: accretion; accretion disks; Astrophysics; Collision rates; Collisions; Computational fluid dynamics; Data Analysis, Statistics and Probability; Dust; Earth and Planetary Astrophysics; Earth Sciences; Geophysics; hydrodynamics; Instrumentation and Methods for Astrophysic; Mathematical models; methods: numerical; Physics; Planet formation; planet-disk interactions; Planetology; planets and satellites: formation; Sciences of the Universe; Space Physics; Turbulence; Turbulent flow

Context. Planetesimals in gaseous protoplanetary disks may grow by collecting dust particles. Hydrodynamical studies show that small particles generally avoid collisions with the planetesimals because they are entrained by the flow around them. This occurs when St, the Stokes number, defined as the...