{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:GZQ2DCRJWJWW7LRLW6SKXUPPLH","short_pith_number":"pith:GZQ2DCRJ","schema_version":"1.0","canonical_sha256":"3661a18a29b26d6fae2bb7a4abd1ef59e9ad0ece55bd6f60e6d405a6f599736c","source":{"kind":"arxiv","id":"2404.17963","version":1},"attestation_state":"computed","paper":{"title":"Multiline observations of hydrogen, helium, and carbon radio-recombination lines toward Orion A: A detailed dynamical study and direct determination of physical conditions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. G. G. M. Tielens, C. H. M. Pabst, J. R. Goicoechea, N. Marcelino, P. Salas, S. Cuadrado","submitted_at":"2024-04-27T17:27:34Z","abstract_excerpt":"We present a study of hydrogen, helium, and carbon millimeter-wave radio-recombination lines (RRLs) toward ten representative positions throughout the Orion Nebula complex, using the Yebes 40m telescope in the Q band (31.3 GHz to 50.6 GHz) at an angular resolution of about $45\\arcsec$ ($\\sim$0.09\\,pc). The observed positions include the Orion Nebula (M42) with the Orion Molecular Core 1, M43, and the Orion Molecular Core 3 bordering on NGC 1973, 1975, and 1977. While hydrogen and helium RRLs arise in the ionized gas surrounding the massive stars in the Orion Nebula complex, carbon RRLs stem fr"},"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":"2404.17963","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-27T17:27:34Z","cross_cats_sorted":[],"title_canon_sha256":"213e17f6bc76c0c9852271dcd26bb07d8dd2be23db333a44db78424be729deab","abstract_canon_sha256":"4574e9c620045f446b5b33447c717502f4ed979b28b6e6ce717475a66d0fc7e0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:50:11.811328Z","signature_b64":"DiABKwyBIkBfvWRL60Gr3oycy4qTqmUgAIWGkMtJdm/0bUOLDtpqFMiDL6mKZhyDn4Ru0nGr+Jp0GeV90gBPBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3661a18a29b26d6fae2bb7a4abd1ef59e9ad0ece55bd6f60e6d405a6f599736c","last_reissued_at":"2026-07-05T08:50:11.810804Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:50:11.810804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multiline observations of hydrogen, helium, and carbon radio-recombination lines toward Orion A: A detailed dynamical study and direct determination of physical conditions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. G. G. M. Tielens, C. H. M. Pabst, J. R. Goicoechea, N. Marcelino, P. Salas, S. Cuadrado","submitted_at":"2024-04-27T17:27:34Z","abstract_excerpt":"We present a study of hydrogen, helium, and carbon millimeter-wave radio-recombination lines (RRLs) toward ten representative positions throughout the Orion Nebula complex, using the Yebes 40m telescope in the Q band (31.3 GHz to 50.6 GHz) at an angular resolution of about $45\\arcsec$ ($\\sim$0.09\\,pc). The observed positions include the Orion Nebula (M42) with the Orion Molecular Core 1, M43, and the Orion Molecular Core 3 bordering on NGC 1973, 1975, and 1977. While hydrogen and helium RRLs arise in the ionized gas surrounding the massive stars in the Orion Nebula complex, carbon RRLs stem fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.17963","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.17963/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":"2404.17963","created_at":"2026-07-05T08:50:11.810861+00:00"},{"alias_kind":"arxiv_version","alias_value":"2404.17963v1","created_at":"2026-07-05T08:50:11.810861+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.17963","created_at":"2026-07-05T08:50:11.810861+00:00"},{"alias_kind":"pith_short_12","alias_value":"GZQ2DCRJWJWW","created_at":"2026-07-05T08:50:11.810861+00:00"},{"alias_kind":"pith_short_16","alias_value":"GZQ2DCRJWJWW7LRL","created_at":"2026-07-05T08:50:11.810861+00:00"},{"alias_kind":"pith_short_8","alias_value":"GZQ2DCRJ","created_at":"2026-07-05T08:50:11.810861+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2506.16700","citing_title":"Expansion Signatures in 35 HII Regions traced by SOFIA [CII] Emission","ref_index":65,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH","json":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH.json","graph_json":"https://pith.science/api/pith-number/GZQ2DCRJWJWW7LRLW6SKXUPPLH/graph.json","events_json":"https://pith.science/api/pith-number/GZQ2DCRJWJWW7LRLW6SKXUPPLH/events.json","paper":"https://pith.science/paper/GZQ2DCRJ"},"agent_actions":{"view_html":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH","download_json":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH.json","view_paper":"https://pith.science/paper/GZQ2DCRJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2404.17963&json=true","fetch_graph":"https://pith.science/api/pith-number/GZQ2DCRJWJWW7LRLW6SKXUPPLH/graph.json","fetch_events":"https://pith.science/api/pith-number/GZQ2DCRJWJWW7LRLW6SKXUPPLH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH/action/storage_attestation","attest_author":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH/action/author_attestation","sign_citation":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH/action/citation_signature","submit_replication":"https://pith.science/pith/GZQ2DCRJWJWW7LRLW6SKXUPPLH/action/replication_record"}},"created_at":"2026-07-05T08:50:11.810861+00:00","updated_at":"2026-07-05T08:50:11.810861+00:00"}