{"paper":{"title":"Molecular line emission in NGC 4945, imaged with ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.A. Malawi, C. Henkel, C.M.V. Impellizzeri, F. Alkhuja, F. Alves, F. Combes, F. Costagliola, F. Kamali, G. Bendo, G. Fuller, G.I.G. Jozsa, H. Ismail, H.M. Asiri, J. Greene, J. Mangum, J. Ott, J.S. Zhang, K. Tristram, L.K. Hunt, M. Wang, P. van der Werf, R. Aladro, R. Mauersberger, R.S. Klessen, S. Aalto, S. Garcia-Burillo, S. Martin, S. Muehle, S. Muller, S. Viti, W.A. Baan, X.D. Tang, Y. Ao, Y. Gong","submitted_at":"2018-02-27T12:34:44Z","abstract_excerpt":"NGC 4945 is one of the nearest (~3.8 Mpc; 1\" ~ 19 pc) starburst galaxies. ALMA band 3 (3--4\\,mm) observations of HCN, HCO+, CS, C3H2, SiO, HCO, and CH3C2H were carried out with ~2\" resolution. The lines reveal a rotating nuclear disk of projected size 10\" x 2\" with position angle ~45 deg, inclination ~75 deg and an unresolved bright central core of size <2.5\". The continuum source (mostly free-free radiation) is more compact than the nuclear disk by a linear factor of two but shows the same position angle and is centered 0.39\" +_ 0.14\" northeast of the nuclear accretion disk defined by H2O mas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.09852","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"}