{"paper":{"title":"High dense gas fraction in intensely star-forming dusty galaxies at high redshift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Cooray, A. Omont, C. Furlanetto, C. Yang, D. Riechers, H. Dannerbauer, H. Nayyeri, I. Oteo, L. Dunne, M. Bremer, M. Negrello, P. Cox, P. van der Werf, R. Gavazzi, R. J. Ivison, R. Neri, S. Bussmann, S. Eales, Z-Y. Zhang","submitted_at":"2017-01-20T19:00:02Z","abstract_excerpt":"We present ALMA and VLA detections of the dense molecular gas tracers HCN, HCO$^+$ and HNC in two lensed, high-redshift starbursts selected from the {\\it Herschel}-ATLAS survey: {\\it H}-ATLAS\\,J090740.0$-$004200 (SDP.9, $z \\sim 1.6$) and {\\it H}-ATLAS\\,J091043.1$-$000321 (SDP.11, $z \\sim 1.8$). ALMA observed the $J = 3-2$ transitions in both sources, while the VLA observed the $J = 1-0$ transitions in SDP.9. We have detected all observed HCN and HCO$^+$ lines in SDP.9 and SDP.11, and also HNC(3--2) in SDP.9. The amplification factors for both galaxies have been determined from sub-arcsec resol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05901","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"}