The effect of pre-impact spin on the Moon-forming collision

@article{RuizBonilla2020TheEO,
  title={The effect of pre-impact spin on the Moon-forming collision},
  author={S Ruiz-Bonilla and Vincent R. Eke and Jacob A. Kegerreis and R J Massey and L. F. A. Teodoro},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020}
}
We simulate the hypothesized collision between the proto-Earth and a Mars-sized impactor that created the Moon. Among the resulting debris disc in some impacts, we find a self-gravitating clump of material. It is roughly the mass of the Moon, contains $\sim 1{{\ \rm per\ cent}}$ iron like the Moon, and has its internal composition resolved for the first time. The clump contains mainly impactor material near its core but becomes increasingly enriched in proto-Earth material near its surface. The… 
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