{"paper":{"title":"ALMA Observations of [OI]145um and [NII]205um Emission lines from Star-Forming Galaxies at $z\\sim7$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio K. Inoue, Alexander P. S. Hygate, Andrea Ferrara, Andrea Pallottini, Dan Stark, Elisabete da Cunha, Hanae Inami, Ilse De Looze, Ivana F. van Leeuwen, Joris Witstok, Kasper E. Heintz, Lucie E. Rowland, Manuel Aravena, Masamune Oguri, Mauro Stefanon, Paul P. van der Werf, Pratika Dayal, Rebecca A. A. Bowler, Renske Smit, Rychard Bouwens, Seiji Fujimoto, Takuya Hashimoto, Yoshinobu Fudamoto, Yuma Sugahara","submitted_at":"2025-04-04T18:00:00Z","abstract_excerpt":"We present results of new observations of [OI]145um and [NII]205um emission lines from four star-forming galaxies at redshifts between $z=6.58$ and $7.68$ that have previous detections of \\Ciium\\ and dust continua. Using ALMA, we successfully detect [OI]145um emission from all targets at $>4\\,\\sigma$ significance. However, [NII]205um emission is undetected in all galaxies (SNR $<3.5\\,\\sigma$) except for a tentative detection from A1689-zD1. From the observed high [CII]/[NII] emission line ratios ($\\gtrsim20 - 80$), we find that most of the [CII]158um emission arise from neutral gas regions ($3"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.03831","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/2504.03831/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"}