{"paper":{"title":"Detection of exposed H$_2$O ice on the nucleus of comet 67P/Churyumov-Gerasimenko","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Guilbert-Lepoutre, A. Pommerol, A. Raponi, B. J. R. Davidsson, B. Rousseau, C. Barbieri, C. De Sanctis, C. Feller, C. Guttler, C. Leyrat, D. Bockelee-Morvan, D. Koschny, D. Perna, El-Maarry, F. Capaccioni, F. Merlin, F. Tosi, G. Arnold, G. Cremonese, G. Filacchione, H. Rickman, H. Sierks, H. U. Keller, I. Bertini, J.-B. Vincent, J.D.P. Deshapriya, J.-L. Bertaux, M.A. Barucci, M.Ciarniello, M. F. A'Hearn, M. Fulchignoni, M. Fulle, M. Massironi, M.T. Capria, N. Oklay, O. Groussin, P. Cerroni, P. Drossart, P. H. Hasselmann, P. L. Lamy, R. Rodrigo, S. Erard, S. Fonti, S. Fornasier, V. Da Deppo","submitted_at":"2016-09-02T11:30:59Z","abstract_excerpt":"Since the orbital insertion of the Rosetta spacecraft, comet 67P/Churyumov-Gerasimenko (67P/C-G) has been mapped by OSIRIS camera and VIRTIS spectro-imager, producing a huge quantity of images and spectra of the comet's nucleus. The aim of this work is to search for the presence of H$_2$O on the nucleus which, in general, appears very dark and rich in dehydrated organic material. After selecting images of the bright spots which could be good candidates to search for H$_2$O ice, taken at high resolution by OSIRIS, we check for spectral cubes of the selected coordinates to identify these spots o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00551","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}