{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:UAVE4WAZM3HKIWXHO2UAI653H3","short_pith_number":"pith:UAVE4WAZ","schema_version":"1.0","canonical_sha256":"a02a4e581966cea45ae776a8047bbb3ef4fa4d05024f58b402dd45d99136a4e4","source":{"kind":"arxiv","id":"0803.3176","version":1},"attestation_state":"computed","paper":{"title":"A binary signature in the non-thermal radio-emitter Cyg OB2 #9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Barbieri (Univ. Padova), G. Rauw (IAGL, M. De Becker, ULg), Y. Naze","submitted_at":"2008-03-21T14:22:13Z","abstract_excerpt":"Aims: Non-thermal radio emission associated with massive stars is believed to arise from a wind-wind collision in a binary system. However, the evidence of binarity is still lacking in some cases, notably Cyg OB2 #9 Methods: For several years, we have been monitoring this heavily-reddened star from various observatories. This campaign allowed us to probe variations both on short and long timescales and constitutes the first in-depth study of the visible spectrum of this object. Results: Our observations provide the very first direct evidence of a companion in Cyg OB2 #9, confirming the theoret"},"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":"0803.3176","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-21T14:22:13Z","cross_cats_sorted":[],"title_canon_sha256":"a5093ff22db25838d9a1b6985b9286e6b3a4069f5ae66ad88883808e710bafe1","abstract_canon_sha256":"ff2816875d9bd8443a75e0a906c68904de5e1e5a5d22a1a947dc198aff60f6fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:44:58.115988Z","signature_b64":"5qUr/PsoDISCyc0vQOPSf4nME3cWcKglq/BjyCSslA02y95JWL80V9X837XY8YGUDE7FSv2yz7DpK3WfM/6nDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a02a4e581966cea45ae776a8047bbb3ef4fa4d05024f58b402dd45d99136a4e4","last_reissued_at":"2026-05-18T03:44:58.115258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:44:58.115258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A binary signature in the non-thermal radio-emitter Cyg OB2 #9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Barbieri (Univ. Padova), G. Rauw (IAGL, M. De Becker, ULg), Y. Naze","submitted_at":"2008-03-21T14:22:13Z","abstract_excerpt":"Aims: Non-thermal radio emission associated with massive stars is believed to arise from a wind-wind collision in a binary system. However, the evidence of binarity is still lacking in some cases, notably Cyg OB2 #9 Methods: For several years, we have been monitoring this heavily-reddened star from various observatories. This campaign allowed us to probe variations both on short and long timescales and constitutes the first in-depth study of the visible spectrum of this object. Results: Our observations provide the very first direct evidence of a companion in Cyg OB2 #9, confirming the theoret"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.3176","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":"0803.3176","created_at":"2026-05-18T03:44:58.115383+00:00"},{"alias_kind":"arxiv_version","alias_value":"0803.3176v1","created_at":"2026-05-18T03:44:58.115383+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.3176","created_at":"2026-05-18T03:44:58.115383+00:00"},{"alias_kind":"pith_short_12","alias_value":"UAVE4WAZM3HK","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"UAVE4WAZM3HKIWXH","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"UAVE4WAZ","created_at":"2026-05-18T12:25:58.018023+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/UAVE4WAZM3HKIWXHO2UAI653H3","json":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3.json","graph_json":"https://pith.science/api/pith-number/UAVE4WAZM3HKIWXHO2UAI653H3/graph.json","events_json":"https://pith.science/api/pith-number/UAVE4WAZM3HKIWXHO2UAI653H3/events.json","paper":"https://pith.science/paper/UAVE4WAZ"},"agent_actions":{"view_html":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3","download_json":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3.json","view_paper":"https://pith.science/paper/UAVE4WAZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0803.3176&json=true","fetch_graph":"https://pith.science/api/pith-number/UAVE4WAZM3HKIWXHO2UAI653H3/graph.json","fetch_events":"https://pith.science/api/pith-number/UAVE4WAZM3HKIWXHO2UAI653H3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3/action/storage_attestation","attest_author":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3/action/author_attestation","sign_citation":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3/action/citation_signature","submit_replication":"https://pith.science/pith/UAVE4WAZM3HKIWXHO2UAI653H3/action/replication_record"}},"created_at":"2026-05-18T03:44:58.115383+00:00","updated_at":"2026-05-18T03:44:58.115383+00:00"}