How dust fragmentation may be beneficial to planetary growth by pebble accretion

Context. Pebble accretion is an emerging paradigm for the fast growth of planetary cores. flux and pebble sizes are key parameters used in models. Aims. We aim to derive fluxes from state-of-the-art dust coagulation models understand their dependence on disk fragmentation threshold velocity, impact those by accretion. Methods. a 1D evolution model including calculate realistic mass flux. this information integrate embryos placed at various locations protoplanetary disk. Results. strongly depends properties size turbulence level, as well aggregates’ threshold. find that may be beneficial multiple ways. First all, it prevents solids growing very large sizes, which point efficiency drops. What more, small pebbles depleted lower rate, providing long-lasting As full computationally expensive, we provide simple method estimating any without substructure with velocity.