Characteristic pebble size limits at the Bondi radius, plotted with the parameters of Table 1. The colors indicate the pebble size where v_fall,peb = v_lim = 2.4 m s⁻¹, the common limit set via erosion with micron-sized grains and fragmentation. The white dashed line separates the Stokes and Epstein regimes while the dotted line indicates the regions where either growth rate or erosion/fragmentation limits the local pebble size. The plus sign marks the default planet mass (5 M_⊕) and distance (5 AU).