{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:4C255ZOKRWN2OBV3SHMWBRL7KT","short_pith_number":"pith:4C255ZOK","schema_version":"1.0","canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","source":{"kind":"arxiv","id":"1106.4784","version":1},"attestation_state":"computed","paper":{"title":"Discovery of Water Vapor in the High-Redshift Quasar APM 08279+5255 at Z=3.91","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. A. Neufeld, D. C. Lis, M. Gerin, R. Neri, T. G. Phillips","submitted_at":"2011-06-23T17:56:03Z","abstract_excerpt":"We report a detection of the excited 220-211 rotational transition of para-H2O in APM 08279+5255 using the IRAM Plateau de Bure interferometer. At z = 3.91, this is the highest-redshift detection of interstellar water to date. From LVG modeling, we conclude that this transition is predominantly radiatively pumped and on its own does not provide a good estimate of the water abundance. However, additional water transitions are predicted to be detectable in this source, which would lead to an improved excitation model. We also present a sensitive upper limit for the HF J = 1 - 0 absorption toward"},"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":"1106.4784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","cross_cats_sorted":[],"title_canon_sha256":"d40b3cfe5e9f9f9347220560abbb51808c8412135906be996519f7695c5bbbfe","abstract_canon_sha256":"e5c13052caf523445820b4ef69cac91d8682fd272bbd6fc598016b7e603ecb1b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:31.511245Z","signature_b64":"cEuAJrI2p6kfaIOMvXHQEYzvTG2rzzqpCGrCVuI+0x6opB7bjJDDsvY+tadXoutdJE1O4eWWKJQK5FVqkX2DAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","last_reissued_at":"2026-05-18T02:01:31.510459Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:31.510459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of Water Vapor in the High-Redshift Quasar APM 08279+5255 at Z=3.91","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. A. Neufeld, D. C. Lis, M. Gerin, R. Neri, T. G. Phillips","submitted_at":"2011-06-23T17:56:03Z","abstract_excerpt":"We report a detection of the excited 220-211 rotational transition of para-H2O in APM 08279+5255 using the IRAM Plateau de Bure interferometer. At z = 3.91, this is the highest-redshift detection of interstellar water to date. From LVG modeling, we conclude that this transition is predominantly radiatively pumped and on its own does not provide a good estimate of the water abundance. However, additional water transitions are predicted to be detectable in this source, which would lead to an improved excitation model. We also present a sensitive upper limit for the HF J = 1 - 0 absorption toward"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4784","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":"1106.4784","created_at":"2026-05-18T02:01:31.510589+00:00"},{"alias_kind":"arxiv_version","alias_value":"1106.4784v1","created_at":"2026-05-18T02:01:31.510589+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4784","created_at":"2026-05-18T02:01:31.510589+00:00"},{"alias_kind":"pith_short_12","alias_value":"4C255ZOKRWN2","created_at":"2026-05-18T12:26:20.644004+00:00"},{"alias_kind":"pith_short_16","alias_value":"4C255ZOKRWN2OBV3","created_at":"2026-05-18T12:26:20.644004+00:00"},{"alias_kind":"pith_short_8","alias_value":"4C255ZOK","created_at":"2026-05-18T12:26:20.644004+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/4C255ZOKRWN2OBV3SHMWBRL7KT","json":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT.json","graph_json":"https://pith.science/api/pith-number/4C255ZOKRWN2OBV3SHMWBRL7KT/graph.json","events_json":"https://pith.science/api/pith-number/4C255ZOKRWN2OBV3SHMWBRL7KT/events.json","paper":"https://pith.science/paper/4C255ZOK"},"agent_actions":{"view_html":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT","download_json":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT.json","view_paper":"https://pith.science/paper/4C255ZOK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1106.4784&json=true","fetch_graph":"https://pith.science/api/pith-number/4C255ZOKRWN2OBV3SHMWBRL7KT/graph.json","fetch_events":"https://pith.science/api/pith-number/4C255ZOKRWN2OBV3SHMWBRL7KT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/action/storage_attestation","attest_author":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/action/author_attestation","sign_citation":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/action/citation_signature","submit_replication":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/action/replication_record"}},"created_at":"2026-05-18T02:01:31.510589+00:00","updated_at":"2026-05-18T02:01:31.510589+00:00"}