Formation of pebble-pile planetesimals and the internal structure of comets
Project: Dissertation › Individual research project
Research areas and keywords
- Astronomy, Astrophysics and Cosmology
- Solar system, Planet formation, Comets, Numerical simulations
I investigate the formation process of planetesimals through the collapse of pebble clouds in protoplanetary disks. Massive clouds collapse fast and have fragmenting pebble-pebble collisions. The resulting planetesimal consists of both pebbles and dust, allowing the interior to be compact. Low-mass clouds collapse more slowly, only have bouncing collisions and result in a porous pebble-pile.
Planet formation occurs in protoplanetary disks of gas, dust and ice which orbit around newborn stars. Pebbles are thought to form through coagulation of dust grains in these disks. Such particles drift toward the star on short timescales because of gas drag. It has been proposed that hydrodynamical effects can form pebble clouds and that planetesimals form from the collapse of such clouds.
|Effective start/end date||2012/08/01 → …|
Anders Johansen, Chao-Chin Yang, Bertram Bitsch, Katrin Ros, Karl Wahlberg Jansson & Daniel Carrera
European Commission - FP7
2012/01/01 → 2016/12/31
Project: Research › Individual research project
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