Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...385..181w&link_type=abstract
Astronomy and Astrophysics, v.385, p.181-204 (2002)
Astronomy and Astrophysics
Astrophysics
25
Accretion, Accretion Disks, Solar System: Formation, Comets: General, Dust, Extinction
Scientific paper
This work investigates the annealing of silicate dust, the combustion of carbon dust and radial mixing of both dust species within protoplanetary disks. For this purpose the diffusion-transport-reaction equations of both dust species (including annealing of silicate and carbon combustion) are simultaneously solved with the equations for the global evolution of an alpha -disk within an one-zone, time-dependent numerical model. The protostar-disk system is assumed to be in a quiescent stage which corresponds with the class II phase of evolution of star-disk systems. The results suggest that the diffusive transport spreads the dust globally throughout the disk, and therefore provides an explanation for the existence of crystalline silicate and methane within the primordial bodies of the solar system.
Gail Hans-Peter
Wehrstedt Michael
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