Vortices in Protoplanetary Disks and the Formation of Planetesimals

Details Vortices in Protoplanetary Disks and the Formation of Planetesimals Vortices in Protoplanetary Disks and the Formation of Planetesimals

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stun.conf...97b&link_type=abstract

Studying Turbulence Using Numerical Simulation Databases, 8. Proceedings of the 2000 Summer Program, p. 97

Computer Science

Databases

Gravitational Instability, Planetary Evolution, Protoplanets, Agglomeration, Equations Of Motion, Vortices

Scientific paper

The least understood step in the formation of planets is the creation of kilometer size planetesimals from centimeter-size dust grains. It has been suggested that vortices within the protoplanetary disk may concentrate dust particles at their centers, which may enhance the dust density enough to trigger a gravitational instability to clumping. Our companion paper in this volume discusses the fluid dynamics of 3D vortices in a protoplanetary disk. Here, we present preliminary calculations of the motion of dust grains within such 3D vortices. We confirm that grains are focused toward the centers of vortices, and offer a simple physical picture as to why heavy particles are not centrifuged out.

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