{"paper":{"title":"Herschel/HIFI observations of high-J CO transitions in the protoplanetary nebula CRL618","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Barcia, A. de Koter, A.G.G.M. Tielens, A.P. Marston, C. Dominik, D.A. Neufeld, D. Teyssier, F.L. Schoier, G. Melnick, G. Quintana-Lacaci, H. Olofsson, I. Lopez-Fernandez, J. Alcolea, J. Cernicharo, J.D. Gallego, K. Jacobs, K. Justtanont, K.M. Menten, K. Wildeman, L.B.F.M. Waters, L. Decin, M.C. Diez-Gonzalez, M. Schmidt, P. Planesas, R. Gusten, R. Soria-Ruiz, R. Szczerba, V. Bujarrabal","submitted_at":"2010-07-09T11:55:21Z","abstract_excerpt":"We performed Herschel/HIFI observations of several CO lines in the far-infrared/sub-mm in the protoplanetary nebula CRL618. The high spectral resolution provided by HIFI allows measurement of the line profiles. Since the dynamics and structure of the nebula is well known from mm-wave interferometric maps, it is possible to identify the contributions of the different nebular components (fast bipolar outflows, double shells, compact slow shell) to the line profiles. The observation of these relatively high-energy transitions allows an accurate study of the excitation conditions in these componen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1570","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"}