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Three-dimensional model of the irradiance of cometary nuclei: Using the nucleus of comet 67P/Churyumov–Gerasimenko as an example

Dorofeeva, V. A.; Marov, M. Ya.; Rusol, A. V.

The goal of this paper is to construct a 3D model of the surface of a cometary nucleus that allows the irradiance nonuniformity and temperature distribution to be investigated. This is very important, because in zones with a maximum surface temperature chemical and physical transformations of material are possible in subsurface layers. We propose …

Formation of cometary nuclei during low-velocity collisions of planetesimals

Zelenyi, L. M.; Ksanfomaliti, L. V.

An investigation of the properties of the 67P/CG nucleus shows convincingly that some of the cometary nuclei resulted from low-velocity collisions of planetesimals. The hypothesis about the origination of a cometary nucleus from colliding bodies has long been known, but it is comet 67P/CG that has imparted topicality to it. In this paper we briefl…