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Dust Evolution in Protoplanetary Disks

Published online by Cambridge University Press:  27 February 2018

Thomas Henning ,
Wolfgang Schmitt ,
Hubert Klahr  and
Rastislav Mucha
Thomas Henning
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions”, Schillergäβchen 2-3, 07745 Jena, Germany
Wolfgang Schmitt
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions”, Schillergäβchen 2-3, 07745 Jena, Germany
Hubert Klahr
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions”, Schillergäβchen 2-3, 07745 Jena, Germany
Rastislav Mucha
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions”, Schillergäβchen 2-3, 07745 Jena, Germany

Abstract

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The evolution of dust particles in circumstellar disk-like structures around protostars and young stellar objects is discussed. We especially consider the coagulation of grains due to collisional aggregation and the influence of this process on the optical properties of the particles. These dust opacities are important for both the derivation of the circumstellar dust mass from submillimetre continuum observations and the dynamical behaviour of the disks.

We present first results of a numerical study of the coagulation of dust grains in a turbulent protoplanetary accretion disk described by a time-dependent one-dimensional (radial) “alpha” model. The influence of grain opacity changes due to dust coagulation on the dynamical evolution of a protostellar disk is investigated. In addition, we consider the grain motion in two-dimensional disks.

Type
XIII. Relationships to Interstellar Dust
Information
International Astronomical Union Colloquium , Volume 150: Physics, Chemistry and Dynamics of Interplanetary Dust , 1996 , pp. 513 - 516
Copyright
Copyright © Astronomical Society of the Pacific 1996

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