• Corpus ID: 119253820

How to form asteroids from mm-sized grains

  title={How to form asteroids from mm-sized grains},
  author={Daniel Carrera and Anders Johansen and Melvyn B. Davies},
  journal={arXiv: Earth and Planetary Astrophysics},
The size distribution of asteroids in the solar system suggests that they formed top-down, with 100-1000 km bodies forming from the gravitational collapse of dense clumps of small solid particles. We investigate the conditions under which solid particles can form dense clumps in a protoplanetary disc. We used a hydrodynamic code to model the solid-gas interaction in disc. We found that particles down to millimeter size can form dense clumps, but only in regions where solids make $\sim$ 8% of… 

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