{"paper":{"title":"Constraining the ISM properties of the Cloverleaf quasar host galaxy with Herschel spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bade D. Uzgil, C. Matt Bradford, James E. Aguirre, Philip R. Maloney, Steve Hailey-Dunsheath","submitted_at":"2016-10-02T20:33:07Z","abstract_excerpt":"We present Herschel observations of far-infrared (FIR) fine-structure (FS) lines [CII]158$\\mu$m, [OI]63$\\mu$m, [OIII]52$\\mu$m, and [SiII]35$\\mu$m in the z=2.56 Cloverleaf quasar, and combine them with published data in an analysis of the dense interstellar medium (ISM) in this system. Observed [CII]158$\\mu$m, [OI]63$\\mu$m, and FIR continuum flux ratios are reproduced with photodissociation region (PDR) models characterized by moderate far-ultraviolet (FUV) radiation fields $G_0=$ 0.3-1$\\times10^3$ and atomic gas densities $n_{\\rm H}=$ 3-5$\\times10^3$ cm$^{-3}$, depending on contributions to [C"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.00347","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"}