The motion of chondrules and other particles in a protoplanetary disc with temperature fluctuations

We consider the mechanism of photophoretic transport in protoplanetary discs that are optically thick to radiation. Here, photophoresis is not caused by the central star but by temperature fluctuations that subject suspended solid particles, including chondrules, to non-isotropic thermal radiation w...

Full description

Saved in:
Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 463; no. 4; pp. 4167 - 4174
Main Authors Loesche, C., Wurm, G., Kelling, T., Teiser, J., Ebel, D. S.
Format Journal Article
LanguageEnglish
Published London Oxford University Press 21.12.2016
Subjects
Accretion disks
Aggregates
Bouncing
Chondrule
Density
Dust
Fluctuation
Mass transfer
Planet formation
Protoplanets
Star & galaxy formation
Velocity
Online AccessGet full text

Cover

More Information
Summary:We consider the mechanism of photophoretic transport in protoplanetary discs that are optically thick to radiation. Here, photophoresis is not caused by the central star but by temperature fluctuations that subject suspended solid particles, including chondrules, to non-isotropic thermal radiation within the disc. These short-lived temperature fluctuations can explain time-of-flight size sorting and general number density enhancements. The same mechanism will also lead to velocity fluctuations of dust aggregates beyond 100 m s super( -1) for millimetre-sized particles in protoplanetary discs. Applying this in future research, it will change our understanding of the early phases of collisional dust evolution and aggregate growth as particles cross the bouncing barrier and as mass transfer rates are altered.
Bibliography:SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-1
ObjectType-Feature-2
content type line 23
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stw2279