Florida Space Institute Seminar
Announcement
Speaker:
Julie Brisset
Affiliation:
University of Braunschweig, Germany
Day
and Date: Wednesday, March 19, 2014
Time:
2:00 – 3:00 pm
Location: Partnership 1, Research
Parkway
Building 8111, Orlando, Florida
Room 209
Title
Title : Microgravity Experiments On The First
Steps of Planet Formation
Abstract
:
In the very first steps of planet formation, dust
particles inside the protoplanetary disk collide with each other and grow from
micrometer sizes to aggregates of a few centimeters. In order to investigate
the dust collision behavior at low velocities, the SPACE (Suborbital Particle
Aggregation and Collision Experiment) set-up was flown at the drop tower in
Bremen, Germany (9 s of microgravity time), and on the REXUS 12 suborbital
rocket from Kiruna, Sweden (170 s of microgravity time). The results of these
experiments allowed for the measurement of critical collision properties of
sub-mm-sized dust aggregates, especially in the transition regimes between
sticking, bouncing and fragmentation. In particular, the formation and
characteristics of clusters composed of a high number of aggregates were
observed and yielded relevant information for future protoplanetary disk
simulations.
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