{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:IDZGOLHPOLO2MYMYRN3RQN7GRR","short_pith_number":"pith:IDZGOLHP","schema_version":"1.0","canonical_sha256":"40f2672cef72dda661988b771837e68c7d65f8d429de793c75eff78479b2a33c","source":{"kind":"arxiv","id":"astro-ph/0512080","version":1},"attestation_state":"computed","paper":{"title":"A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey IV: Discovery of Seven Additional Quasars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Aleksandar M. Diamond-Stanic, Atsuko Nitta, Dan Long, Donald P. Schneider, Eric H. N eilsen, Gillian R. Knapp, Gordon T. Richards, Howard J. Brewington, James E. Gunn, Jason E. Young, J. Brinkmann, J. C. Barentine, Jennifer L. D onley, Joseph F. Hennawi, Jr., J. Serena Kim, Jurek Krzesinski, Linhua Jiang, Marianne Vestergaard, Masataka F ukugita, Michael A. Strauss, Michael Harvanek, Neta A. Bahcall, Richard L. White, Robert H. Becker, Robert H. Lupton, S. J. Kleinman, Stephanie A. Snedden, W. N. Brandt, Wolfgang Voges, Xiaohui Fan","submitted_at":"2005-12-04T16:34:18Z","abstract_excerpt":"We present the discovery of seven quasars at z>5.7, selected from ~2000 deg^2 of multicolor imaging data of the Sloan Digital Sky Survey (SDSS). The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS Northern Galactic Cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z=5.93), exhibits no emission lines; the 3-sigma limit on the rest-frame equivalent width of Ly alpha+NV line is 5 A. It is the highest redshift lineless quasar known, and could be a gravitat"},"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":"astro-ph/0512080","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-04T16:34:18Z","cross_cats_sorted":[],"title_canon_sha256":"dc25af8781e148b0aca77a4201fb3390c9b2b71791f163474f1088c3fca6ed2b","abstract_canon_sha256":"1beb1a02062f3d81fde214da04c76281788420f17a09dd8f958475edec153edd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:43.309887Z","signature_b64":"mCayKlLSE8cXkTn7R11mHbfGmo4lp/egXTOoww5objCYYLITiDQJVj1eL93B3UZ/meWGQ6Q2fl6RymHGKctTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40f2672cef72dda661988b771837e68c7d65f8d429de793c75eff78479b2a33c","last_reissued_at":"2026-05-18T03:47:43.309444Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:43.309444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey IV: Discovery of Seven Additional Quasars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Aleksandar M. Diamond-Stanic, Atsuko Nitta, Dan Long, Donald P. Schneider, Eric H. N eilsen, Gillian R. Knapp, Gordon T. Richards, Howard J. Brewington, James E. Gunn, Jason E. Young, J. Brinkmann, J. C. Barentine, Jennifer L. D onley, Joseph F. Hennawi, Jr., J. Serena Kim, Jurek Krzesinski, Linhua Jiang, Marianne Vestergaard, Masataka F ukugita, Michael A. Strauss, Michael Harvanek, Neta A. Bahcall, Richard L. White, Robert H. Becker, Robert H. Lupton, S. J. Kleinman, Stephanie A. Snedden, W. N. Brandt, Wolfgang Voges, Xiaohui Fan","submitted_at":"2005-12-04T16:34:18Z","abstract_excerpt":"We present the discovery of seven quasars at z>5.7, selected from ~2000 deg^2 of multicolor imaging data of the Sloan Digital Sky Survey (SDSS). The new quasars have redshifts z from 5.79 to 6.13. Five are selected as part of a complete flux-limited sample in the SDSS Northern Galactic Cap; two have larger photometric errors and are not part of the complete sample. One of the new quasars, SDSS J1335+3533 (z=5.93), exhibits no emission lines; the 3-sigma limit on the rest-frame equivalent width of Ly alpha+NV line is 5 A. It is the highest redshift lineless quasar known, and could be a gravitat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512080","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":""},"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":"astro-ph/0512080","created_at":"2026-05-18T03:47:43.309512+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0512080v1","created_at":"2026-05-18T03:47:43.309512+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0512080","created_at":"2026-05-18T03:47:43.309512+00:00"},{"alias_kind":"pith_short_12","alias_value":"IDZGOLHPOLO2","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_16","alias_value":"IDZGOLHPOLO2MYMY","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_8","alias_value":"IDZGOLHP","created_at":"2026-05-18T12:25:53.335082+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/IDZGOLHPOLO2MYMYRN3RQN7GRR","json":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR.json","graph_json":"https://pith.science/api/pith-number/IDZGOLHPOLO2MYMYRN3RQN7GRR/graph.json","events_json":"https://pith.science/api/pith-number/IDZGOLHPOLO2MYMYRN3RQN7GRR/events.json","paper":"https://pith.science/paper/IDZGOLHP"},"agent_actions":{"view_html":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR","download_json":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR.json","view_paper":"https://pith.science/paper/IDZGOLHP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0512080&json=true","fetch_graph":"https://pith.science/api/pith-number/IDZGOLHPOLO2MYMYRN3RQN7GRR/graph.json","fetch_events":"https://pith.science/api/pith-number/IDZGOLHPOLO2MYMYRN3RQN7GRR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR/action/storage_attestation","attest_author":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR/action/author_attestation","sign_citation":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR/action/citation_signature","submit_replication":"https://pith.science/pith/IDZGOLHPOLO2MYMYRN3RQN7GRR/action/replication_record"}},"created_at":"2026-05-18T03:47:43.309512+00:00","updated_at":"2026-05-18T03:47:43.309512+00:00"}