The shape of (7) Iris as evidence of an ancient large impact?

@article{Hanu2019TheSO,
  title={The shape of (7) Iris as evidence of an ancient large impact?},
  author={Josef Hanu{\vs} and Micha{\"e}l Marsset and Pierre Vernazza and M. Viikinkoski and Alexis Drouard and Miroslav Bro{\vz} and Beno{\^i}t Carry and Romain F{\'e}tick and Franck Marchis and Laurent Jorda and Thierry Fusco and Mirel Birlan and Toni Santana-Ros and Edyta Podlewska-Gaca and Emmanuel Jehin and Marin Ferrais and J. Grice and Przemysław Bartczak and J{\'e}r{\^o}me Berthier and Julie C. Castillo‐Rogez and Fabrice Cipriani and F. Colas and Grzegorz Dudziński and Christophe Dumas and Josef Ďurech and Mikko Kaasalainen and Agnieszka Kryszczyńska and Philippe Lamy and H. Le Coroller and Anna Marciniak and Tadeusz Michałowski and Patrick Michel and Myriam Pajuelo and Paolo Tanga and Fr{\'e}d{\'e}ric Vachier and Arthur Vigan and Olivier G. Witasse and B. Yang},
  journal={Astronomy \& Astrophysics},
  year={2019}
}
Context. Asteroid (7) Iris is an ideal target for disk-resolved imaging owing to its brightness (V ~ 7–8) and large angular size of 0.33′′ during its apparitions. Iris is believed to belong to the category of large unfragmented asteroids that avoided internal differentiation, implying that its current shape and topography may record the first few 100 Myr of the solar system’s collisional evolution. Aims. We recovered information about the shape and surface topography of Iris from disk-resolved… 

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