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4 papers · 2 filters
Implications of the interstellar object 1I/'Oumuamua for planetary dynamics and planetesimal formation
Sean N. Raymond, Philip J. Armitage, Dimitri Veras +2
'Oumuamua, the first bona-fide interstellar planetesimal, was discovered passing through our Solar System on a hyperbolic orbit. This object was likely dynamically ejected from an…
Rossby Vortices in Thin Magnetized Accretion Discs
Loren Matilsky, Sergei Dyda, Richard V. E. Lovelace +1
We study the Rossby wave instability (RWI) in a thin accretion disc threaded by an initially toroidal magnetic field using the magnetohydrodynamics (MHD) code PLUTO. We find that f…
A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO
Kevin M. Flaherty, A. Meredith Hughes, Sanaea C. Rose +8
Gas kinematics are an important part of the planet formation process. Turbulence influences planetesimal growth and migration from the scale of sub-micron dust grains through gas-g…
Evidence for universality in the initial planetesimal mass function
Jacob B. Simon, Philip J. Armitage, Andrew N. Youdin +1
Planetesimals may form from the gravitational collapse of dense particle clumps initiated by the streaming instability. We use simulations of aerodynamically coupled gas-particle m…