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Toroidal vortices as a solution to the dust migration problem
Pablo Loren-Aguilar, Matthew R. Bate
In an earlier letter, we reported that dust settling in protoplanetary discs may lead to a dynamical dust-gas instability that produces global toroidal vortices. In this letter, we…
Two-fluid dust and gas mixtures in smoothed particle hydrodynamics II: an improved semi-implicit approach
Pablo Loren-Aguilar, Matthew R. Bate
We present an improved version of the Loren-Aguilar & Bate (2014) method to integrate the two-fluid dust/gas equations that correctly captures the limiting velocity of small grains…
The Spatial Structure of Young Stellar Clusters. III. Physical Properties and Evolutionary States
Michael A. Kuhn, Eric D. Feigelson, Konstantin V. Getman +3
We analyze the physical properties of stellar clusters that are detected in massive star-forming regions in the MYStIX project--a comparative, multiwavelength study of young stella…
Toroidal vortices and the conglomeration of dust into rings in protoplanetary discs
Pablo Loren-Aguilar, Matthew R. Bate
We identify a new hydrodynamical instability in protoplanetary discs that may arise due to variations in the dust-to-gas ratio and may lead to concentration of dust grains within a…
Stable smoothed particle magnetohydrodynamics in very steep density gradients
Benjamin T. Lewis, Matthew R. Bate, Joseph J. Monaghan +1
The equations of smoothed particle magnetohydrodynamics (SPMHD), even with the various corrections to instabilities so far proposed, have been observed to be unstable when a very s…
Smoothed particle magnetohydrodynamic simulations of protostellar outflows with misaligned magnetic field and rotation axes
Benjamin T. Lewis, Matthew R. Bate, Daniel J. Price
We have developed a modified form of the equations of smoothed particle magnetohydrodynamics which are stable in the presence of very steep density gradients. Using this formalism,…