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Regional unit definition for the nucleus of comet 67P/Churyumov-Gerasimenko on the SHAP7 model

Nicolas Thomas 1 Mohamed Ramy El-Maarry 2 Panagiotis Theologou 1 Frank Preusker 3 Frank Scholten 3 Laurent Jorda 4 Stubbe F. Hviid 3 Raphael Marschall 1, 5 Ekkehard Kührt 3 Giampiero Naletto 6, 7, 8 Holger Sierks 9 Philippe Lamy 4 Rafael Rodrigo 5, 10 Detlief Koschny 11 Björn Davidsson 12 Maria Antonella Barucci 13 Jean-Loup Bertaux 14 Ivano Bertini 7 Dennis Bodewits 15 Gabriele Cremonese 16 Vania da Deppo 17 Stefano Debei 18 Mariolino de Cecco 19 Sonia Fornasier 13 Marco Fulle 20 O. Groussin 4 Pedro J. Gutièrrez 21 Carsten Güttler 9 Wing-H. Ip 22, 23 Horst U. Keller 24, 3 Jörg Knollenberg 3 Luisa M. Lara 21 Monica Lazzarin 7 José J. Lopez-Moreno 21 Francesco Marzari 7 Cécilia Tubiana 9 Jean-Baptiste Vincent 3
Abstract : The previously defined regions on the nucleus of comet 67P/Churyumov-Gerasimenko have been mapped back onto the 3D SHAP7 model of the nucleus (Preusker et al., 2017). The resulting regional definition is therefore self-consistent with boundaries that are well defined in 3 dimensions. The facets belonging to each region are provided as supplementary material. The shape model has then been used to assess inhomogeneity of nucleus surface morphology within individual regions. Several regions show diverse morphology. We propose subdivision of these regions into clearly identifiable units (sub-regions) and a comprehensive table is provided. The surface areas of each sub-region have been computed and statistics based on grouping of unit types are provided. The roughness of each region is also provided in a quantitative manner using a technique derived from computer graphics * Corresponding author. Physikalisches
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Nicolas Thomas, Mohamed Ramy El-Maarry, Panagiotis Theologou, Frank Preusker, Frank Scholten, et al.. Regional unit definition for the nucleus of comet 67P/Churyumov-Gerasimenko on the SHAP7 model. Planetary and Space Science, Elsevier, 2018, 164, pp.19-36. ⟨10.1016/j.pss.2018.05.019⟩. ⟨hal-02108712⟩

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