{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:HDTVTPMWQVWWTPDPSFCJQKVQPZ","short_pith_number":"pith:HDTVTPMW","schema_version":"1.0","canonical_sha256":"38e759bd96856d69bc6f9144982ab07e42097a374c0fef9c544c43a3e4153bb3","source":{"kind":"arxiv","id":"1604.02565","version":1},"attestation_state":"computed","paper":{"title":"Phosphorus-bearing molecules in massive dense cores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Aina Palau, A. Vasyunin, F. Fontani, P. Caselli, V.M. Rivilla","submitted_at":"2016-04-09T13:41:05Z","abstract_excerpt":"Phosphorus is a crucial element for the development of life, but so far P-bearing molecules have been detected only in a few astrophysical objects, hence its interstellar chemistry is almost totally unknown. Here we show new detections of phosphorus nitride in a sample of dense cores in different evolutionary stages of the intermediate- and high-mass star formation process: starless, with protostellar objects, and with ultracompact HII regions. All detected PN line widths are smaller than ~5 km/s , and they arise from regions associated with kinetic temperatures smaller than 100 K. Because the"},"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":"1604.02565","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-09T13:41:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"dd26af5ee01e19caa9618682b8278ce4064dbb2343e07b48f643c898a3466b7d","abstract_canon_sha256":"365fde5983d40d03d7a141eb51667835796bbe08055287393c4d4b55be481517"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:48.137793Z","signature_b64":"xLd23AZUYEkc2HnDsmAorVSmfLFCI8e8ZZi4s8OrAPH8Q1tKp2Das0r/Eq6p2Hva/OCEoJopdhuLAQ1t/93pAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"38e759bd96856d69bc6f9144982ab07e42097a374c0fef9c544c43a3e4153bb3","last_reissued_at":"2026-05-18T01:13:48.137199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:48.137199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Phosphorus-bearing molecules in massive dense cores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Aina Palau, A. Vasyunin, F. Fontani, P. Caselli, V.M. Rivilla","submitted_at":"2016-04-09T13:41:05Z","abstract_excerpt":"Phosphorus is a crucial element for the development of life, but so far P-bearing molecules have been detected only in a few astrophysical objects, hence its interstellar chemistry is almost totally unknown. Here we show new detections of phosphorus nitride in a sample of dense cores in different evolutionary stages of the intermediate- and high-mass star formation process: starless, with protostellar objects, and with ultracompact HII regions. All detected PN line widths are smaller than ~5 km/s , and they arise from regions associated with kinetic temperatures smaller than 100 K. Because the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.02565","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":"1604.02565","created_at":"2026-05-18T01:13:48.137307+00:00"},{"alias_kind":"arxiv_version","alias_value":"1604.02565v1","created_at":"2026-05-18T01:13:48.137307+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.02565","created_at":"2026-05-18T01:13:48.137307+00:00"},{"alias_kind":"pith_short_12","alias_value":"HDTVTPMWQVWW","created_at":"2026-05-18T12:30:19.053100+00:00"},{"alias_kind":"pith_short_16","alias_value":"HDTVTPMWQVWWTPDP","created_at":"2026-05-18T12:30:19.053100+00:00"},{"alias_kind":"pith_short_8","alias_value":"HDTVTPMW","created_at":"2026-05-18T12:30:19.053100+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/HDTVTPMWQVWWTPDPSFCJQKVQPZ","json":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ.json","graph_json":"https://pith.science/api/pith-number/HDTVTPMWQVWWTPDPSFCJQKVQPZ/graph.json","events_json":"https://pith.science/api/pith-number/HDTVTPMWQVWWTPDPSFCJQKVQPZ/events.json","paper":"https://pith.science/paper/HDTVTPMW"},"agent_actions":{"view_html":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ","download_json":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ.json","view_paper":"https://pith.science/paper/HDTVTPMW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1604.02565&json=true","fetch_graph":"https://pith.science/api/pith-number/HDTVTPMWQVWWTPDPSFCJQKVQPZ/graph.json","fetch_events":"https://pith.science/api/pith-number/HDTVTPMWQVWWTPDPSFCJQKVQPZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ/action/storage_attestation","attest_author":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ/action/author_attestation","sign_citation":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ/action/citation_signature","submit_replication":"https://pith.science/pith/HDTVTPMWQVWWTPDPSFCJQKVQPZ/action/replication_record"}},"created_at":"2026-05-18T01:13:48.137307+00:00","updated_at":"2026-05-18T01:13:48.137307+00:00"}