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Rapid planetesimal formation in the inner protoplanetary disk

Published online by Cambridge University Press:  05 January 2015

Joanna Drążkowska ,
Fredrik Windmark  and
Satoshi Okuzumi
Joanna Drążkowska
Affiliation:
Heidelberg University, Center for Astronomy, Institute of Theoretical Astrophysics, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany email: drazkowska@uni-heidelberg.de
Fredrik Windmark
Affiliation:
Heidelberg University, Center for Astronomy, Institute of Theoretical Astrophysics, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany email: drazkowska@uni-heidelberg.de
Satoshi Okuzumi
Affiliation:
Tokyo Institute of Technology, Department of Earth and Planetary Sciences, Meguro-ku, Tokyo 152-8551, Japan
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Abstract

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Growth barriers, including the bouncing, fragmentation and radial drift problems, are still a big issue in planetesimal and thus planet formation theory. We present a new mechanism for very rapid planetesimal formation by sweep-up growth. Planetesimal formation is extremely fast in the inner protoplanetary disk where the growth rate exceeds the radial drift rate, leading to local planetesimal formation and pile-up inside of 1 AU. This scenario is very appealing particularly in the context of explaining the low mass of Mars, as well as the formation of recently discovered multi-transiting systems with tightly-packed inner planets.

Keywords

accretionaccretion disksstars: circumstellar matterplanetary systems: protoplanetary disksplanetary systems: formationsolar system: formationmethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S310: Complex Planetary Systems , July 2014 , pp. 208 - 211
Copyright
Copyright © International Astronomical Union 2014 

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