{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:YPQWZLKTAMQ7EAN6UG63U4RESJ","short_pith_number":"pith:YPQWZLKT","schema_version":"1.0","canonical_sha256":"c3e16cad530321f201bea1bdba7224924eb2bbccfb98b7506fa185354a6381cc","source":{"kind":"arxiv","id":"2306.00647","version":1},"attestation_state":"computed","paper":{"title":"Extreme damped Lyman-$\\alpha$ absorption in young star-forming galaxies at $z=9-11$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Abdurro'uf, Anne Hutter, Charlotte A. Mason, Dan Coe, Darach Watson, Gabriel Brammer, Intae Jung, Jorryt Matthee, Kasper E. Heintz, Meghana Killi, Nial R. Tanvir, Pablo Arrabal Haro, P\\'all Jakobsson, Pascal A. Oesch, Peter Laursen, Rohan P. Naidu, Simone Vejlgaard, Steven L. Finkelstein, Sune Toft, Tiger Yu-Yang Hsiao, Victoria B. Strait","submitted_at":"2023-06-01T13:14:39Z","abstract_excerpt":"The onset of galaxy formation is thought to be initiated by the infall of neutral, pristine gas onto the first protogalactic halos. However, direct constraints on the abundance of neutral atomic hydrogen (HI) in galaxies have been difficult to obtain at early cosmic times. Here we present spectroscopic observations with JWST of three galaxies at redshifts $z=8.8 - 11.4$, about $400-600$ Myr after the Big Bang, that show strong damped Lyman-$\\alpha$ absorption ($N_{\\rm HI} > 10^{22}$ cm$^{-2}$) from HI in their local surroundings, an order of magnitude in excess of the Lyman-$\\alpha$ absorption"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2306.00647","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-01T13:14:39Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"3f0dbe50a7f99186d45e7e7f4cf7cd422735d6240e2987ea3103b9971d9018eb","abstract_canon_sha256":"ef868c2bb2fb8e6bc3ae1a7a147699f07454a2076e8553dbf769ce2ee3a0b23a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:16:29.238606Z","signature_b64":"c+BEHiKP9oyVpaHuYjj9QHUoVIehWDWS8qTNzb9TpY+/V6UvCaozneynQL1t1aMCpbot+2EZoKjekVhInT1pCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3e16cad530321f201bea1bdba7224924eb2bbccfb98b7506fa185354a6381cc","last_reissued_at":"2026-07-05T06:16:29.238125Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:16:29.238125Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extreme damped Lyman-$\\alpha$ absorption in young star-forming galaxies at $z=9-11$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Abdurro'uf, Anne Hutter, Charlotte A. Mason, Dan Coe, Darach Watson, Gabriel Brammer, Intae Jung, Jorryt Matthee, Kasper E. Heintz, Meghana Killi, Nial R. Tanvir, Pablo Arrabal Haro, P\\'all Jakobsson, Pascal A. Oesch, Peter Laursen, Rohan P. Naidu, Simone Vejlgaard, Steven L. Finkelstein, Sune Toft, Tiger Yu-Yang Hsiao, Victoria B. Strait","submitted_at":"2023-06-01T13:14:39Z","abstract_excerpt":"The onset of galaxy formation is thought to be initiated by the infall of neutral, pristine gas onto the first protogalactic halos. However, direct constraints on the abundance of neutral atomic hydrogen (HI) in galaxies have been difficult to obtain at early cosmic times. Here we present spectroscopic observations with JWST of three galaxies at redshifts $z=8.8 - 11.4$, about $400-600$ Myr after the Big Bang, that show strong damped Lyman-$\\alpha$ absorption ($N_{\\rm HI} > 10^{22}$ cm$^{-2}$) from HI in their local surroundings, an order of magnitude in excess of the Lyman-$\\alpha$ absorption"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.00647","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/2306.00647/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2306.00647","created_at":"2026-07-05T06:16:29.238185+00:00"},{"alias_kind":"arxiv_version","alias_value":"2306.00647v1","created_at":"2026-07-05T06:16:29.238185+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.00647","created_at":"2026-07-05T06:16:29.238185+00:00"},{"alias_kind":"pith_short_12","alias_value":"YPQWZLKTAMQ7","created_at":"2026-07-05T06:16:29.238185+00:00"},{"alias_kind":"pith_short_16","alias_value":"YPQWZLKTAMQ7EAN6","created_at":"2026-07-05T06:16:29.238185+00:00"},{"alias_kind":"pith_short_8","alias_value":"YPQWZLKT","created_at":"2026-07-05T06:16:29.238185+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2605.11278","citing_title":"Absorption of Gravitons and Photon Luminosities of Interstellar/Intergalactic Hydrogen Atoms","ref_index":43,"is_internal_anchor":false},{"citing_arxiv_id":"2605.11278","citing_title":"Absorption of Gravitons and Photon Luminosities of Interstellar/Intergalactic Hydrogen Atoms","ref_index":43,"is_internal_anchor":false},{"citing_arxiv_id":"2606.17146","citing_title":"MEGA and SMILES Find Fewer Dusty Galaxies than Expected at Cosmic Noon","ref_index":153,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ","json":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ.json","graph_json":"https://pith.science/api/pith-number/YPQWZLKTAMQ7EAN6UG63U4RESJ/graph.json","events_json":"https://pith.science/api/pith-number/YPQWZLKTAMQ7EAN6UG63U4RESJ/events.json","paper":"https://pith.science/paper/YPQWZLKT"},"agent_actions":{"view_html":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ","download_json":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ.json","view_paper":"https://pith.science/paper/YPQWZLKT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2306.00647&json=true","fetch_graph":"https://pith.science/api/pith-number/YPQWZLKTAMQ7EAN6UG63U4RESJ/graph.json","fetch_events":"https://pith.science/api/pith-number/YPQWZLKTAMQ7EAN6UG63U4RESJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ/action/storage_attestation","attest_author":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ/action/author_attestation","sign_citation":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ/action/citation_signature","submit_replication":"https://pith.science/pith/YPQWZLKTAMQ7EAN6UG63U4RESJ/action/replication_record"}},"created_at":"2026-07-05T06:16:29.238185+00:00","updated_at":"2026-07-05T06:16:29.238185+00:00"}