Stokes Trapping and Planet Formation

M. Wilkinson, B. Mehlig, V. Uski
2008 Astrophysical Journal Supplement Series  
It is believed that planets are formed by aggregation of dust particles suspended in the turbulent gas forming accretion disks around developing stars. We describe a mechanism, termed 'Stokes trapping', by which turbulence limits the growth of aggregates of dust particles, so that their Stokes number (defined as the ratio of the damping time of the particles to the Kolmogorov dissipation timescale) remains close to unity. We discuss possible mechanisms for avoiding this barrier to further
more » ... er to further growth. None of these is found to be satisfactory and we introduce a new theory which does not involve the growth of small clusters of dust grains.
doi:10.1086/533533 fatcat:3n2cgonn4bhpvfjjkqrnswyezi