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Garvoturbulent planetesimal formation - state and prospects of the field

Klahr, H (MPI for Astronomy)
Wednesday 30 September 2009, 15:30-16:30

Seminar Room 1, Newton Institute


Planetesimals may well form from the gravitational collapse of a particle cloud, the so called, pre-planetesimals, once they got concentrated by turbulent flow features, possibly enhanced by a streaming instability. This talk shall give an overview of the state of the field and summarize what we know and what we still have to learn about this mechanism. I will discuss the formation and redistribution of the pre-planetesimals. I will also address the role of resolution in our numerical simulations and in how far this relates to the possible initial planetesimal masses. I show that the mass of the planetesimals is actually determined by the rate at which pre-planetesimals drift through the disk. The talk shall further discuss a list of open questions concerning gravoturbulent planetesimal formation and how this model may fit to the observational findings of our solar system.


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