{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:XELQJTDKZT2BSKOHEG6WIGNUA2","short_pith_number":"pith:XELQJTDK","schema_version":"1.0","canonical_sha256":"b91704cc6accf41929c721bd6419b406a4c588915edb630610ccdc36cdc4fab5","source":{"kind":"arxiv","id":"2110.11977","version":3},"attestation_state":"computed","paper":{"title":"The SSA22 HI Tomography Survey (SSA22-HIT). I. Data Set and Compiled Redshift Catalog","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio K. Inoue, David J. Schlegel, Hideki Umehata, Ikuru Iwata, Joseph F. Hennawi, J. Xavier Prochaska, Ken Mawatari, Khee-Gan Lee, Masami Ouchi, Nicolas Tejos, Nobunari Kashikawa, Satoshi Yamanaka, Shiro Mukae, Takuya Otsuka, Tomoki Hayashino, Toru Yamada, Yoichi Tamura, Yuichi Matsuda, Yuma Sugahara","submitted_at":"2021-10-22T18:00:19Z","abstract_excerpt":"We conducted a deep spectroscopic survey, named SSA22-HIT, in the SSA22 field with the DEep Imaging MultiObject Spectrograph (DEIMOS) on the Keck telescope, designed to tomographically map high-z HI gas through analysis of Lya absorption in background galaxies' spectra. In total, 198 galaxies were spectroscopically confirmed at 2.5 < z < 6 with a few low-z exceptions in the 26 x 15 arcmin^2 area, of which 148 were newly determined in this study. Our redshift measurements were merged with previously confirmed redshifts available in the 34 x 27 arcmin^2 area of the SSA22 field. This compiled cat"},"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":"2110.11977","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-22T18:00:19Z","cross_cats_sorted":[],"title_canon_sha256":"f6f79e34f9654b6bd8ec25a58dac469f9913a275fb0b5234f2e09ade0b1b24e7","abstract_canon_sha256":"2ab910d28386275e85c092e34d0a281c6f4f7a244fe02c228bc60d08970bb621"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:49:27.180307Z","signature_b64":"/Qt9/em+StFnvGRkJrsT9fjKrDKdMa+d5E3NZdT6ng6NhQ/6gPVrQFAG9BpnQoR+z9SJYOtJoRWREOIJaFlHAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b91704cc6accf41929c721bd6419b406a4c588915edb630610ccdc36cdc4fab5","last_reissued_at":"2026-07-05T05:49:27.179860Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:49:27.179860Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The SSA22 HI Tomography Survey (SSA22-HIT). I. Data Set and Compiled Redshift Catalog","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio K. Inoue, David J. Schlegel, Hideki Umehata, Ikuru Iwata, Joseph F. Hennawi, J. Xavier Prochaska, Ken Mawatari, Khee-Gan Lee, Masami Ouchi, Nicolas Tejos, Nobunari Kashikawa, Satoshi Yamanaka, Shiro Mukae, Takuya Otsuka, Tomoki Hayashino, Toru Yamada, Yoichi Tamura, Yuichi Matsuda, Yuma Sugahara","submitted_at":"2021-10-22T18:00:19Z","abstract_excerpt":"We conducted a deep spectroscopic survey, named SSA22-HIT, in the SSA22 field with the DEep Imaging MultiObject Spectrograph (DEIMOS) on the Keck telescope, designed to tomographically map high-z HI gas through analysis of Lya absorption in background galaxies' spectra. In total, 198 galaxies were spectroscopically confirmed at 2.5 < z < 6 with a few low-z exceptions in the 26 x 15 arcmin^2 area, of which 148 were newly determined in this study. Our redshift measurements were merged with previously confirmed redshifts available in the 34 x 27 arcmin^2 area of the SSA22 field. This compiled cat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.11977","kind":"arxiv","version":3},"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/2110.11977/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":"2110.11977","created_at":"2026-07-05T05:49:27.179928+00:00"},{"alias_kind":"arxiv_version","alias_value":"2110.11977v3","created_at":"2026-07-05T05:49:27.179928+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.11977","created_at":"2026-07-05T05:49:27.179928+00:00"},{"alias_kind":"pith_short_12","alias_value":"XELQJTDKZT2B","created_at":"2026-07-05T05:49:27.179928+00:00"},{"alias_kind":"pith_short_16","alias_value":"XELQJTDKZT2BSKOH","created_at":"2026-07-05T05:49:27.179928+00:00"},{"alias_kind":"pith_short_8","alias_value":"XELQJTDK","created_at":"2026-07-05T05:49:27.179928+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2","json":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2.json","graph_json":"https://pith.science/api/pith-number/XELQJTDKZT2BSKOHEG6WIGNUA2/graph.json","events_json":"https://pith.science/api/pith-number/XELQJTDKZT2BSKOHEG6WIGNUA2/events.json","paper":"https://pith.science/paper/XELQJTDK"},"agent_actions":{"view_html":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2","download_json":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2.json","view_paper":"https://pith.science/paper/XELQJTDK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2110.11977&json=true","fetch_graph":"https://pith.science/api/pith-number/XELQJTDKZT2BSKOHEG6WIGNUA2/graph.json","fetch_events":"https://pith.science/api/pith-number/XELQJTDKZT2BSKOHEG6WIGNUA2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2/action/storage_attestation","attest_author":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2/action/author_attestation","sign_citation":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2/action/citation_signature","submit_replication":"https://pith.science/pith/XELQJTDKZT2BSKOHEG6WIGNUA2/action/replication_record"}},"created_at":"2026-07-05T05:49:27.179928+00:00","updated_at":"2026-07-05T05:49:27.179928+00:00"}