Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 2H017

Photophoresis on large sub‐km size bodies in protoplanetary disks

Kuepper, Markus (University Duisburg-Essen)
Duermann, Christoph (University Tübingen)
de Beule, Caroline (University Duisburg-Essen)
Wurm, Gerhard (University Duisburg-Essen)

Photophoresis is a strong non‐gravitational force in optical thin environments of a protoplanetary disks The influence on small sub‐mm particles has been studied in detail. But even for large bodies photophoresis can induce forces significant for the spatial evolution in the disk! A meter sized rocky body at 2 Au distance from a sun‐like star experiences a photophoretical force which may become comparable to the residual gravitation. In microgravity experiments we found that this force can be enhanced by porosity.

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