{"paper":{"title":"Herschel observations of EXtra-Ordinary Sources (HEXOS): Observations of H2O and its isotopologues towards Orion KL","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. Ceccarelli, C. Comito, C. Joblin, C. Vastel, D. A. Neufeld, D. C. Lis, D. Johnstone, E. A. Bergin, E. Caux, E. Falgarone, E. Herbst, F. Daniel, F. F. S. van der Tak, G.A. Blake, G. J. Melnick, H. S. P. Muller, H. W. Yorke, J. A. Murphy, J. Cernicharo, J. C. Pearson, J. R. Goicoechea, J. Stutzki, J. Zmuidzinas, K. M. Menten, L. Pagani, M. Emprechtinger, M. Gerin, M.-L. Dubernet, M. Perault, M. Salez, N. R. Crockett, N. Trappe, P. Encrenaz, P. F. Goldsmith, P. G. Martin, P. Morris, P. Schilke, R. Plume, S. Cabrit, S. D. Lord, S.-L. Qin, S. Maret, S. Schlemmer, S. Wang, S. Yu, T. A. Bell, T. F. Giesen, T. G. Phillips, V. Ossenkopf, V. Tolls, W. D. Langer, W.D. Latter","submitted_at":"2010-07-30T15:08:50Z","abstract_excerpt":"We report the detection of more than 48 velocity-resolved ground rotational state transitions of H2(16)O, H2(18)O, and H2(17)O - most for the first time - in both emission and absorption toward Orion KL using Herschel/HIFI. We show that a simple fit, constrained to match the known emission and absorption components along the line of sight, is in excellent agreement with the spectral profiles of all the water lines. Using the measured H2(18)O line fluxes, which are less affected by line opacity than their H2(16)O counterparts, and an escape probability method, the column densities of H2(18)O as"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.5470","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"}