{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:KFHWQ7GHCKPQ37WTYSLQXPYSYU","short_pith_number":"pith:KFHWQ7GH","schema_version":"1.0","canonical_sha256":"514f687cc7129f0dfed3c4970bbf12c52a05efefa2e280e3a373bd2ef47495e8","source":{"kind":"arxiv","id":"2006.16268","version":1},"attestation_state":"computed","paper":{"title":"No Redshift Evolution in the Broad Line Region Metallicity up to z=7.54: Deep NIR Spectroscopy of ULAS J1342+0928","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele P. Farina, Fabian Walter, Feige Wang, Frederick B. Davies, Irham Taufik Andika, Jan-Torge Schindler, Joseph F. Hennawi, Knud Jahnke, Masafusa Onoue, Nozomu Tominaga, Roberto Decarli, Tohru Nagao","submitted_at":"2020-06-29T18:00:10Z","abstract_excerpt":"We present deep (9 hours) Gemini-N/GNIRS near-infrared spectroscopic observations of ULAS J1342+0928, a luminous quasar at z=7.54. Various broad emission lines were detected, as well as the underlying continuum and iron forests over the rest-frame wavelength 970-2930A. There is a clear trend that higher-ionization emission lines show larger blueshifts with CIV1549 exhibiting 5510^{+240}_{-110} km s-1 blueshift with respect to the systematic redshift from the far-infrared [CII] 158um emission line. Those high ionization lines have wide profiles with FWHM more than 10000 km s-1. A modest blueshi"},"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":"2006.16268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-29T18:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"a49de2fa00036900876b83d6584a8da80238dd99d4ec1d1ef81829d61f67a76a","abstract_canon_sha256":"bac71a4c5d1d37085b8ffa69197e2679f2635cbfa49479d4ec85f178614d2f7a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:24:38.511332Z","signature_b64":"0Ok9tUssznKgF+YGkSqXjOZzc3o/F/95BELqpsQlutqyTUAxNVF+8oDnvL45Rpu0Ky5qQD0h3Ylsz0wv1MAhDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"514f687cc7129f0dfed3c4970bbf12c52a05efefa2e280e3a373bd2ef47495e8","last_reissued_at":"2026-07-05T01:24:38.510909Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:24:38.510909Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"No Redshift Evolution in the Broad Line Region Metallicity up to z=7.54: Deep NIR Spectroscopy of ULAS J1342+0928","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele P. Farina, Fabian Walter, Feige Wang, Frederick B. Davies, Irham Taufik Andika, Jan-Torge Schindler, Joseph F. Hennawi, Knud Jahnke, Masafusa Onoue, Nozomu Tominaga, Roberto Decarli, Tohru Nagao","submitted_at":"2020-06-29T18:00:10Z","abstract_excerpt":"We present deep (9 hours) Gemini-N/GNIRS near-infrared spectroscopic observations of ULAS J1342+0928, a luminous quasar at z=7.54. Various broad emission lines were detected, as well as the underlying continuum and iron forests over the rest-frame wavelength 970-2930A. There is a clear trend that higher-ionization emission lines show larger blueshifts with CIV1549 exhibiting 5510^{+240}_{-110} km s-1 blueshift with respect to the systematic redshift from the far-infrared [CII] 158um emission line. Those high ionization lines have wide profiles with FWHM more than 10000 km s-1. A modest blueshi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.16268","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/2006.16268/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":"2006.16268","created_at":"2026-07-05T01:24:38.510968+00:00"},{"alias_kind":"arxiv_version","alias_value":"2006.16268v1","created_at":"2026-07-05T01:24:38.510968+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.16268","created_at":"2026-07-05T01:24:38.510968+00:00"},{"alias_kind":"pith_short_12","alias_value":"KFHWQ7GHCKPQ","created_at":"2026-07-05T01:24:38.510968+00:00"},{"alias_kind":"pith_short_16","alias_value":"KFHWQ7GHCKPQ37WT","created_at":"2026-07-05T01:24:38.510968+00:00"},{"alias_kind":"pith_short_8","alias_value":"KFHWQ7GH","created_at":"2026-07-05T01:24:38.510968+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/KFHWQ7GHCKPQ37WTYSLQXPYSYU","json":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU.json","graph_json":"https://pith.science/api/pith-number/KFHWQ7GHCKPQ37WTYSLQXPYSYU/graph.json","events_json":"https://pith.science/api/pith-number/KFHWQ7GHCKPQ37WTYSLQXPYSYU/events.json","paper":"https://pith.science/paper/KFHWQ7GH"},"agent_actions":{"view_html":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU","download_json":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU.json","view_paper":"https://pith.science/paper/KFHWQ7GH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2006.16268&json=true","fetch_graph":"https://pith.science/api/pith-number/KFHWQ7GHCKPQ37WTYSLQXPYSYU/graph.json","fetch_events":"https://pith.science/api/pith-number/KFHWQ7GHCKPQ37WTYSLQXPYSYU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU/action/storage_attestation","attest_author":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU/action/author_attestation","sign_citation":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU/action/citation_signature","submit_replication":"https://pith.science/pith/KFHWQ7GHCKPQ37WTYSLQXPYSYU/action/replication_record"}},"created_at":"2026-07-05T01:24:38.510968+00:00","updated_at":"2026-07-05T01:24:38.510968+00:00"}