Free Access

Fig. 17

image

Total inward velocity of a dust particle (red) as a function of Stokes number τf and the corresponding gas velocity for a disc with α = 0.001 (magenta). Over-plotted are also the radial speeds of a 25 and a 50 ME planet in the same discs, assuming pure type I planetary migration. Even for the 50 ME planets, particles with τf > 0.001 drift faster than the planet and would thus accumulate at the pressure bump outside of the planetary orbit.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.