Formation of Phobos and Deimos via a giant impact

@article{Citron2015FormationOP,
  title={Formation of Phobos and Deimos via a giant impact},
  author={Robert I. Citron and Hidenori Genda and Shigeru Ida},
  journal={Icarus},
  year={2015},
  volume={252},
  pages={334-338}
}

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References

SHOWING 1-10 OF 42 REFERENCES

Are Phobos and Deimos the result of a giant impact

The origin of the Martian moons revisited

The origin of the Martian moons, Phobos and Deimos, is still an open issue: either they are asteroids captured by Mars or they formed in situ from a circum-Mars debris disk. The capture scenario

Simulations of a late lunar-forming impact

Implications of an impact origin for the martian hemispheric dichotomy

TLDR
This work uses a high-resolution, two-dimensional, axially symmetric hydrocode to model vertical impacts over a range of parameters appropriate to early Mars and proposes that the impact model, in addition to excavating a crustal cavity of the correct size, explains two other observations.

On the formation of the martian moons from a circum-martian accretion disk

Mega-impact formation of the Mars hemispheric dichotomy

TLDR
This work presents a set of single-impact initial conditions by which a large impactor can produce features consistent with the observed dichotomy’s crustal structure and persistence, with trends more pronounced or unseen in commonly studied smaller impacts.

Origin of the Moon in a giant impact near the end of the Earth's formation

TLDR
This work reports a class of impacts that yield an iron-poor Moon, as well as the current masses and angular momentum of the Earth–Moon system, and suggests that the Moon formed near the very end of Earth's accumulation.

Lunar-forming collisions with pre-impact rotation

The dynamical evolution and origin of the Martian moons