{"paper":{"title":"Spectral Tomography for the Line-of-Sight Structures of the Taurus Molecular Cloud 1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Fumitaka Nakamura, Izumi Mizuno, Kazuhito Dobashi, Kotomi Taniguchi, Seiji Kameno, Tomomi Shimoikura","submitted_at":"2018-08-06T10:00:09Z","abstract_excerpt":"We clarify the line-of-sight structure of the Taurus Molecular Cloud 1 (TMC-1) on the basis of the CCS($J_N=4_3-3_2$) and HC$_3$N($J=5-4$) spectral data observed at a very high velocity resolution and sensitivity of $\\Delta V \\simeq 0.0004$ km s$^{-1}$ ($=61$ Hz) and $\\Delta T_{\\rm mb} \\simeq 40$ mK. The data were obtained toward the cyanopolyyne peak with $\\sim$30 hours integration using the Z45 receiver and the PolariS spectrometer installed in the Nobeyama 45m telescope. Analyses of the optically thin $F=4-4$ and $5-5$ hyperfine lines of the HC$_3$N emission show that the spectra consist of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.01802","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"}