{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:VBDIL4IBLIPRHFMWWKIEIIZHRS","short_pith_number":"pith:VBDIL4IB","schema_version":"1.0","canonical_sha256":"a84685f1015a1f139596b2904423278c9184f8a62e41e4f6a6f36bcf17b9fb82","source":{"kind":"arxiv","id":"1007.0662","version":1},"attestation_state":"computed","paper":{"title":"Astronomical identification of CN-, the smallest observed molecular anion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. A. Gottlieb, C. Kahane, E. Roueff, F. J. Aoiz, F. Lique, J. Cernicharo, J. Klos, J. R. Goicoechea, M. Agundez, M. C. McCarthy, M. Gonzalez Garcia, M. Guelin, N. Marcelino, P. Thaddeus","submitted_at":"2010-07-05T11:52:40Z","abstract_excerpt":"We present the first astronomical detection of a diatomic negative ion, the cyanide anion CN-, as well as quantum mechanical calculations of the excitation of this anion through collisions with para-H2. CN- is identified through the observation of the J = 2-1 and J = 3-2 rotational transitions in the C-star envelope IRC +10216 with the IRAM 30-m telescope. The U-shaped line profiles indicate that CN-, like the large anion C6H-, is formed in the outer regions of the envelope. Chemical and excitation model calculations suggest that this species forms from the reaction of large carbon anions with"},"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":"1007.0662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-05T11:52:40Z","cross_cats_sorted":[],"title_canon_sha256":"416d33082403e654a6fcc89ee458114fbeb0cc07601b4e34b26f4cbb1d240c91","abstract_canon_sha256":"3c373a17557c83d90dcb2eebffdc49f736c1719a8f94d9a38208674fac15caa9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:32.459195Z","signature_b64":"wdCzlzEiEGz5AiZnsdkqEml/WXrq56pjWNgUyq/yhFH/80kvnlrfgyUuOrY5PScciNP+PChyHHdyohznSXYJAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a84685f1015a1f139596b2904423278c9184f8a62e41e4f6a6f36bcf17b9fb82","last_reissued_at":"2026-05-18T02:06:32.458439Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:32.458439Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Astronomical identification of CN-, the smallest observed molecular anion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. A. Gottlieb, C. Kahane, E. Roueff, F. J. Aoiz, F. Lique, J. Cernicharo, J. Klos, J. R. Goicoechea, M. Agundez, M. C. McCarthy, M. Gonzalez Garcia, M. Guelin, N. Marcelino, P. Thaddeus","submitted_at":"2010-07-05T11:52:40Z","abstract_excerpt":"We present the first astronomical detection of a diatomic negative ion, the cyanide anion CN-, as well as quantum mechanical calculations of the excitation of this anion through collisions with para-H2. CN- is identified through the observation of the J = 2-1 and J = 3-2 rotational transitions in the C-star envelope IRC +10216 with the IRAM 30-m telescope. The U-shaped line profiles indicate that CN-, like the large anion C6H-, is formed in the outer regions of the envelope. Chemical and excitation model calculations suggest that this species forms from the reaction of large carbon anions with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.0662","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":"1007.0662","created_at":"2026-05-18T02:06:32.458566+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.0662v1","created_at":"2026-05-18T02:06:32.458566+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.0662","created_at":"2026-05-18T02:06:32.458566+00:00"},{"alias_kind":"pith_short_12","alias_value":"VBDIL4IBLIPR","created_at":"2026-05-18T12:26:15.391820+00:00"},{"alias_kind":"pith_short_16","alias_value":"VBDIL4IBLIPRHFMW","created_at":"2026-05-18T12:26:15.391820+00:00"},{"alias_kind":"pith_short_8","alias_value":"VBDIL4IB","created_at":"2026-05-18T12:26:15.391820+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/VBDIL4IBLIPRHFMWWKIEIIZHRS","json":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS.json","graph_json":"https://pith.science/api/pith-number/VBDIL4IBLIPRHFMWWKIEIIZHRS/graph.json","events_json":"https://pith.science/api/pith-number/VBDIL4IBLIPRHFMWWKIEIIZHRS/events.json","paper":"https://pith.science/paper/VBDIL4IB"},"agent_actions":{"view_html":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS","download_json":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS.json","view_paper":"https://pith.science/paper/VBDIL4IB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.0662&json=true","fetch_graph":"https://pith.science/api/pith-number/VBDIL4IBLIPRHFMWWKIEIIZHRS/graph.json","fetch_events":"https://pith.science/api/pith-number/VBDIL4IBLIPRHFMWWKIEIIZHRS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS/action/storage_attestation","attest_author":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS/action/author_attestation","sign_citation":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS/action/citation_signature","submit_replication":"https://pith.science/pith/VBDIL4IBLIPRHFMWWKIEIIZHRS/action/replication_record"}},"created_at":"2026-05-18T02:06:32.458566+00:00","updated_at":"2026-05-18T02:06:32.458566+00:00"}