How primordial is the structure of comet 67P? - Combined collisional and dynamical models suggest a late formation

@article{Jutzi2016HowPI,
  title={How primordial is the structure of comet 67P? - Combined collisional and dynamical models suggest a late formation},
  author={Martin Jutzi and W. Benz and Anastasia Toliou and Alessandro Morbidelli and Ramon Brasser},
  journal={Astronomy and Astrophysics},
  year={2016},
  volume={597}
}
Context. There is an active debate about whether the properties of comets as observed today are primordial or, alternatively, if they are a result of collisional evolution or other processes. Aims. We investigate the effects of collisions on a comet with a structure like 67P/Churyumov-Gerasimenko (67P). We develop scaling laws for the critical specific impact energies Q reshape required for a significant shape alteration. These are then used in simulations of the combined dynamical and… 

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