{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:NMAQTX6SJRBPNBOLFXDMDE5H5M","short_pith_number":"pith:NMAQTX6S","schema_version":"1.0","canonical_sha256":"6b0109dfd24c42f685cb2dc6c193a7eb2abf017f45c03b79119fecd3a580eb90","source":{"kind":"arxiv","id":"1007.1420","version":1},"attestation_state":"computed","paper":{"title":"Strong CH+ J=1-0 emission and absorption in DR21","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Fuente, A. Harris, A. Marston, A. O.~Benz, B. Godard, Ch. Joblin, C. Kramer, C. Risacher, D. Neufeld, D. Teyssier, E. Falgarone, F. Boulanger, F. Schm\\\"ulling, F. van der Tak, H. Yorke, J. Martin-Pintado, J. Pearson, J. Stutzki, M. Fich, M. Gerin, M. R\\\"ollig, M. Salez, N. Erickson, P. Lesaffre, P. Martin, R. G\\\"usten, R. Simon, S. Cabrit, S. Lord, T. G.~Phillips, T. Klein, V. Ossenkopf, W. Jellema","submitted_at":"2010-07-08T17:10:07Z","abstract_excerpt":"We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR21 with the HIFI instrument onboard the Herschel satellite. The line profile exhibits a broad emission line, in addition to two deep and broad absorption features associated with the DR21 molecular ridge and foreground gas. These observations allow us to determine a CH+ J=1-0 line frequency of 835137 +/- 3 MHz, in good agreement with a recent experimental determination. We estimate the CH+ column density to be a few 1e13 cm^-2 in the gas seen in emissi"},"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":"1007.1420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-08T17:10:07Z","cross_cats_sorted":[],"title_canon_sha256":"3096e2e31fa5591873141ff30da74f5a4b2aaaec38afb8f85aa02404950af91a","abstract_canon_sha256":"15bb4cc92be4c986b04b55a6e122e83f1a3a2acdaa46954cdf47570ef532bf07"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:23.785550Z","signature_b64":"sQrVi5cCKyiQqNa6sT1m7znRBiezzO4n20x3GDn23GMrJPp2I+J1kNypki33kVbCfvhr94kDZQaJu+5zZlAYDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b0109dfd24c42f685cb2dc6c193a7eb2abf017f45c03b79119fecd3a580eb90","last_reissued_at":"2026-05-18T02:06:23.784782Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:23.784782Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Strong CH+ J=1-0 emission and absorption in DR21","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Fuente, A. Harris, A. Marston, A. O.~Benz, B. Godard, Ch. Joblin, C. Kramer, C. Risacher, D. Neufeld, D. Teyssier, E. Falgarone, F. Boulanger, F. Schm\\\"ulling, F. van der Tak, H. Yorke, J. Martin-Pintado, J. Pearson, J. Stutzki, M. Fich, M. Gerin, M. R\\\"ollig, M. Salez, N. Erickson, P. Lesaffre, P. Martin, R. G\\\"usten, R. Simon, S. Cabrit, S. Lord, T. G.~Phillips, T. Klein, V. Ossenkopf, W. Jellema","submitted_at":"2010-07-08T17:10:07Z","abstract_excerpt":"We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR21 with the HIFI instrument onboard the Herschel satellite. The line profile exhibits a broad emission line, in addition to two deep and broad absorption features associated with the DR21 molecular ridge and foreground gas. These observations allow us to determine a CH+ J=1-0 line frequency of 835137 +/- 3 MHz, in good agreement with a recent experimental determination. We estimate the CH+ column density to be a few 1e13 cm^-2 in the gas seen in emissi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1420","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":"1007.1420","created_at":"2026-05-18T02:06:23.784850+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.1420v1","created_at":"2026-05-18T02:06:23.784850+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.1420","created_at":"2026-05-18T02:06:23.784850+00:00"},{"alias_kind":"pith_short_12","alias_value":"NMAQTX6SJRBP","created_at":"2026-05-18T12:26:10.704358+00:00"},{"alias_kind":"pith_short_16","alias_value":"NMAQTX6SJRBPNBOL","created_at":"2026-05-18T12:26:10.704358+00:00"},{"alias_kind":"pith_short_8","alias_value":"NMAQTX6S","created_at":"2026-05-18T12:26:10.704358+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/NMAQTX6SJRBPNBOLFXDMDE5H5M","json":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M.json","graph_json":"https://pith.science/api/pith-number/NMAQTX6SJRBPNBOLFXDMDE5H5M/graph.json","events_json":"https://pith.science/api/pith-number/NMAQTX6SJRBPNBOLFXDMDE5H5M/events.json","paper":"https://pith.science/paper/NMAQTX6S"},"agent_actions":{"view_html":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M","download_json":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M.json","view_paper":"https://pith.science/paper/NMAQTX6S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.1420&json=true","fetch_graph":"https://pith.science/api/pith-number/NMAQTX6SJRBPNBOLFXDMDE5H5M/graph.json","fetch_events":"https://pith.science/api/pith-number/NMAQTX6SJRBPNBOLFXDMDE5H5M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M/action/storage_attestation","attest_author":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M/action/author_attestation","sign_citation":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M/action/citation_signature","submit_replication":"https://pith.science/pith/NMAQTX6SJRBPNBOLFXDMDE5H5M/action/replication_record"}},"created_at":"2026-05-18T02:06:23.784850+00:00","updated_at":"2026-05-18T02:06:23.784850+00:00"}