{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:3XQ3MOZISX53IFTEA3KX3TC2B7","short_pith_number":"pith:3XQ3MOZI","schema_version":"1.0","canonical_sha256":"dde1b63b2895fbb4166406d57dcc5a0fd914601ff2736e8029cedce76fae2076","source":{"kind":"arxiv","id":"2406.07612","version":3},"attestation_state":"computed","paper":{"title":"Optical and near-infrared spectroscopy of quasars at $z>6.5$: public data release and composite spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Aaron J. Barth, Anna-Christina Eilers, Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele Paolo Farina, Fabian Walter, Fabio Vito, Feige Wang, Frederick B. Davies, Irham T. Andika, Jan-Torge Schindler, Jinyi Yang, Joseph F. Hennawi, Masafusa Onoue, Riccardo Nanni, Roberto Decarli, Sarah E. I. Bosman, Silvia Belladitta, Silvia Onorato, Xiaohui Fan","submitted_at":"2024-06-11T18:00:01Z","abstract_excerpt":"We present optical and near-infrared (NIR) spectroscopic observations for a sample of $45$ quasars at $6.50 < z \\leq 7.64$ with absolute magnitudes at $1450$ \\r{A} in the range $-28.82 \\leq M_{1450} \\leq -24.13$ and their composite spectrum. The median redshift and $M_{1450}$ of the quasars in the sample are $z_{\\rm{median}}=6.71$ and $M_{1450,\\rm{median}} \\simeq -26.1$, respectively. The NIR spectra are taken with echelle spectrographs, complemented with additional data from optical long slit instruments, and then reduced consistently using the open-source Python-based spectroscopic data redu"},"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":"2406.07612","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-11T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"108e410edfc03da0544b1d69f343d6dbe9e7a96dfd25ae6cbcd25e9addf0386a","abstract_canon_sha256":"515cc0a90a3a2676f27088390ab14a70d60d525fa0843939141f620cd32ff4c0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:11:32.537214Z","signature_b64":"1FQ/jWCB6ocbAHSMhfE8nkmJS3u9Bc2PQIiIPxMLmfuRLsx5A53Ri6EAi5dLmGKUIM9/L7QLkqkF8UlEAN/MAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dde1b63b2895fbb4166406d57dcc5a0fd914601ff2736e8029cedce76fae2076","last_reissued_at":"2026-07-05T11:11:32.536676Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:11:32.536676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optical and near-infrared spectroscopy of quasars at $z>6.5$: public data release and composite spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Aaron J. Barth, Anna-Christina Eilers, Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele Paolo Farina, Fabian Walter, Fabio Vito, Feige Wang, Frederick B. Davies, Irham T. Andika, Jan-Torge Schindler, Jinyi Yang, Joseph F. Hennawi, Masafusa Onoue, Riccardo Nanni, Roberto Decarli, Sarah E. I. Bosman, Silvia Belladitta, Silvia Onorato, Xiaohui Fan","submitted_at":"2024-06-11T18:00:01Z","abstract_excerpt":"We present optical and near-infrared (NIR) spectroscopic observations for a sample of $45$ quasars at $6.50 < z \\leq 7.64$ with absolute magnitudes at $1450$ \\r{A} in the range $-28.82 \\leq M_{1450} \\leq -24.13$ and their composite spectrum. The median redshift and $M_{1450}$ of the quasars in the sample are $z_{\\rm{median}}=6.71$ and $M_{1450,\\rm{median}} \\simeq -26.1$, respectively. The NIR spectra are taken with echelle spectrographs, complemented with additional data from optical long slit instruments, and then reduced consistently using the open-source Python-based spectroscopic data redu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.07612","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/2406.07612/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":"2406.07612","created_at":"2026-07-05T11:11:32.536735+00:00"},{"alias_kind":"arxiv_version","alias_value":"2406.07612v3","created_at":"2026-07-05T11:11:32.536735+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.07612","created_at":"2026-07-05T11:11:32.536735+00:00"},{"alias_kind":"pith_short_12","alias_value":"3XQ3MOZISX53","created_at":"2026-07-05T11:11:32.536735+00:00"},{"alias_kind":"pith_short_16","alias_value":"3XQ3MOZISX53IFTE","created_at":"2026-07-05T11:11:32.536735+00:00"},{"alias_kind":"pith_short_8","alias_value":"3XQ3MOZI","created_at":"2026-07-05T11:11:32.536735+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.15923","citing_title":"Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys","ref_index":129,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7","json":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7.json","graph_json":"https://pith.science/api/pith-number/3XQ3MOZISX53IFTEA3KX3TC2B7/graph.json","events_json":"https://pith.science/api/pith-number/3XQ3MOZISX53IFTEA3KX3TC2B7/events.json","paper":"https://pith.science/paper/3XQ3MOZI"},"agent_actions":{"view_html":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7","download_json":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7.json","view_paper":"https://pith.science/paper/3XQ3MOZI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2406.07612&json=true","fetch_graph":"https://pith.science/api/pith-number/3XQ3MOZISX53IFTEA3KX3TC2B7/graph.json","fetch_events":"https://pith.science/api/pith-number/3XQ3MOZISX53IFTEA3KX3TC2B7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7/action/storage_attestation","attest_author":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7/action/author_attestation","sign_citation":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7/action/citation_signature","submit_replication":"https://pith.science/pith/3XQ3MOZISX53IFTEA3KX3TC2B7/action/replication_record"}},"created_at":"2026-07-05T11:11:32.536735+00:00","updated_at":"2026-07-05T11:11:32.536735+00:00"}