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

DOI: 
10.1016/j.pss.2018.05.019
Publication date: 
07/12/2018
Main author: 
Thomas N.
IAA authors: 
Gutièrrez, P.J.;Lara, L.M.;Lòpez-Moreno, J.J.
Authors: 
Thomas N., El Maarry M.R., Theologou P., Preusker F., Scholten F., Jorda L., Hviid S.F., Marschall R., Kührt E., Naletto G., Sierks H., Lamy P.L., Rodrigo R., Koschny D., Davidsson B., Barucci M.A., Bertaux J.L., Bertini I., Bodewits D., Cremonese G., Da Deppo V., Debei S., De Cecco M., Fornasier S., Fulle M., Groussin O., Gutièrrez P.J., Güttler C., Ip W.H., Keller H.U., Knollenberg J., Lara L.M., Lazzarin M., Lòpez-Moreno J.J., Marzari F., Tubiana C., Vincent J.B.
Journal: 
Planetary and Space Science
Publication type: 
Article
Volume: 
164
Pages: 
19-36
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 sub-division 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 applications. The quantitative method supports the sub-region definition by showing that differences between sub-regions can be numerically justified. © 2018 The Authors
Database: 
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050154213&doi=10.1016%2fj.pss.2018.05.019&partnerID=40&md5=c203a30d5c169fdecf15f7177a279e5e
Keywords: 
67P/Churyumov-Gerasimenko; Morphology; Nucleus; Rosetta