{"paper":{"title":"12CO 4-3 and [CI] 1-0 at the centers of NGC 4945 and Circinus","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B.-C.Koo, C.Kramer, D.Rabanus, F.Bensch, F.Bertoldi, H. Jakob, H.Sasago, H.Yamamoto, J.L.Pineda, J.May, J. Stutzki, K. Jacobs, K.Sun, L.Bronfman, M.Aravena, M.Cubick, M. Fujishita, M.Hitschfeld, M.Miller, M.Roellig, N.Honingh, N.Mizuno, N.Volgenau, R.Schieder, R.Simon, S. Ito, T.Onishi, U.Klein, U.U.Graf, Y. Fukui, Y.Miyamoto, Y.-S. Park, Y.Yonekura","submitted_at":"2007-12-12T13:02:38Z","abstract_excerpt":"Studying molecular gas in the central regions of the star burst galaxies NGC4945 and Circinus enables us to characterize the physical conditions and compare them to previous local and high-z studies. We estimate temperature, molecular density and column densities of CO and atomic carbon. Using model predictions we give a range of estimated CO/C abundance ratios. Using the new NANTEN2 4m sub-millimeter telescope in Pampa La Bola, Chile, we observed for the first time CO 4-3 and [CI] 3P1-3 P0 at the centers of both galaxies at linear scale of 682 pc and 732 pc respectively. We compute the coolin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0712.1924","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0712.1924/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}