Planet seeding through gas-assisted capture of interstellar objects

@article{Grishin2019PlanetST,
  title={Planet seeding through gas-assisted capture of interstellar objects},
  author={E. Grishin and H. Perets and Yael Avni},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019},
  volume={487},
  pages={3324-3332}
}
Planet formation begins with collisional growth of small planetesimals accumulating into larger ones. Such growth occurs while planetesimals are embedded in a gaseous protoplanetary disc. However, small-planetesimals experience collisions and gas-drag that lead to their destruction on short timescales, not allowing, or requiring fine tuned conditions for the efficient growth of $\sim$ metre-size objects. Here we show that $\sim10^{4}$ interstellar objects such as the recently detected 1I/2017… Expand

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