{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:ZDU6O7H5XPRIG5V7HJW5STRERY","short_pith_number":"pith:ZDU6O7H5","schema_version":"1.0","canonical_sha256":"c8e9e77cfdbbe28376bf3a6dd94e248e021d3c9b672b13620dc2d04d616ca83a","source":{"kind":"arxiv","id":"1804.01090","version":1},"attestation_state":"computed","paper":{"title":"Low levels of methanol deuteration in the high-mass star-forming region NGC 6334I","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Brett A. McGuire, Crystal L. Brogan, Eva G. B{\\o}gelund, Ewine F. van Dishoeck, John C. Pearson, Michiel R. Hogerheijde, Niels F. W. Ligterink, Todd R. Hunter, Vianney Taquet","submitted_at":"2018-04-03T14:43:43Z","abstract_excerpt":"The abundance of deuterated molecules in a star-forming region is sensitive to the environment in which they are formed. Deuteration fractions therefore provide a powerful tool for studying the physical and chemical evolution of a star-forming system. While local low-mass star-forming regions show very high deuteration ratios, much lower fractions are observed towards Orion and the Galactic Centre. We derive methanol deuteration fractions at a number of locations towards the high-mass star-forming region NGC 6334I, located at a mean distance of 1.3 kpc, and discuss how these can shed light on "},"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":"1804.01090","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-03T14:43:43Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b6c4b9312138dc2477717a424135368c6b54c06c3012a0d6751ebe3ab0ee5823","abstract_canon_sha256":"e5363382996cbc5f76f497f1ce6ca36158088c7b7b16ae91788603361c5a5765"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:53.675485Z","signature_b64":"4OCTsbAsXaqCbuqZEtS+VFreK1+wv9g/PRrgUBjfgYS5Awzow1UiXW2G4wqOOlLdS83rbNUucsYBpfGJ5qxZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8e9e77cfdbbe28376bf3a6dd94e248e021d3c9b672b13620dc2d04d616ca83a","last_reissued_at":"2026-05-18T00:09:53.674624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:53.674624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low levels of methanol deuteration in the high-mass star-forming region NGC 6334I","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Brett A. McGuire, Crystal L. Brogan, Eva G. B{\\o}gelund, Ewine F. van Dishoeck, John C. Pearson, Michiel R. Hogerheijde, Niels F. W. Ligterink, Todd R. Hunter, Vianney Taquet","submitted_at":"2018-04-03T14:43:43Z","abstract_excerpt":"The abundance of deuterated molecules in a star-forming region is sensitive to the environment in which they are formed. Deuteration fractions therefore provide a powerful tool for studying the physical and chemical evolution of a star-forming system. While local low-mass star-forming regions show very high deuteration ratios, much lower fractions are observed towards Orion and the Galactic Centre. We derive methanol deuteration fractions at a number of locations towards the high-mass star-forming region NGC 6334I, located at a mean distance of 1.3 kpc, and discuss how these can shed light on "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.01090","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":"1804.01090","created_at":"2026-05-18T00:09:53.674774+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.01090v1","created_at":"2026-05-18T00:09:53.674774+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.01090","created_at":"2026-05-18T00:09:53.674774+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZDU6O7H5XPRI","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZDU6O7H5XPRIG5V7","created_at":"2026-05-18T12:33:07.085635+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZDU6O7H5","created_at":"2026-05-18T12:33:07.085635+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/ZDU6O7H5XPRIG5V7HJW5STRERY","json":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY.json","graph_json":"https://pith.science/api/pith-number/ZDU6O7H5XPRIG5V7HJW5STRERY/graph.json","events_json":"https://pith.science/api/pith-number/ZDU6O7H5XPRIG5V7HJW5STRERY/events.json","paper":"https://pith.science/paper/ZDU6O7H5"},"agent_actions":{"view_html":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY","download_json":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY.json","view_paper":"https://pith.science/paper/ZDU6O7H5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.01090&json=true","fetch_graph":"https://pith.science/api/pith-number/ZDU6O7H5XPRIG5V7HJW5STRERY/graph.json","fetch_events":"https://pith.science/api/pith-number/ZDU6O7H5XPRIG5V7HJW5STRERY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY/action/storage_attestation","attest_author":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY/action/author_attestation","sign_citation":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY/action/citation_signature","submit_replication":"https://pith.science/pith/ZDU6O7H5XPRIG5V7HJW5STRERY/action/replication_record"}},"created_at":"2026-05-18T00:09:53.674774+00:00","updated_at":"2026-05-18T00:09:53.674774+00:00"}