{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:HMG3ND7NYERMBTA7EBUMH7PRXV","short_pith_number":"pith:HMG3ND7N","schema_version":"1.0","canonical_sha256":"3b0db68fedc122c0cc1f2068c3fdf1bd776eaeaeba1e8fdc1f065c3eb331f34d","source":{"kind":"arxiv","id":"0909.3815","version":2},"attestation_state":"computed","paper":{"title":"A VLT/FLAMES survey for massive binaries in Westerlund 1: I. first observations of luminous evolved stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. W. Ritchie, I. Negueruela, J. S. Clark, P. A. Crowther","submitted_at":"2009-09-21T17:59:12Z","abstract_excerpt":"Multiwavelength observations of the young massive cluster Westerlund 1 have revealed evidence for a large number of OB supergiant and Wolf-Rayet binaries. However, in most cases these findings are based on secondary binary characteristics such as hard X-ray emission and/or non-thermal radio spectra and hence provide little information on binary properties such as mass ratio and orbital period. To overcome this shortcoming we have initiated a long temporal baseline, VLT/FLAMES+GIRAFFE multi-epoch radial velocity survey that will provide the first direct constraints on these parameters. This stu"},"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":"0909.3815","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-21T17:59:12Z","cross_cats_sorted":[],"title_canon_sha256":"f423794b48b6513fa040a8093b18044051ebba5ad51f7b54e4e69bba1434328d","abstract_canon_sha256":"d5a8068df7ec2357a39e0ed963c19640021d0a3aacb06baf429aea1a841edca6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:45.693846Z","signature_b64":"f+yd3EetvhOd6pz3j/KZ9/GXjmOD//yuh1b3xwKHm9jvJxHrlGARHr+7n87/YXCyvdUcvSyeckMcgK6zfDbUCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b0db68fedc122c0cc1f2068c3fdf1bd776eaeaeba1e8fdc1f065c3eb331f34d","last_reissued_at":"2026-05-18T02:11:45.693197Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:45.693197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A VLT/FLAMES survey for massive binaries in Westerlund 1: I. first observations of luminous evolved stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. W. Ritchie, I. Negueruela, J. S. Clark, P. A. Crowther","submitted_at":"2009-09-21T17:59:12Z","abstract_excerpt":"Multiwavelength observations of the young massive cluster Westerlund 1 have revealed evidence for a large number of OB supergiant and Wolf-Rayet binaries. However, in most cases these findings are based on secondary binary characteristics such as hard X-ray emission and/or non-thermal radio spectra and hence provide little information on binary properties such as mass ratio and orbital period. To overcome this shortcoming we have initiated a long temporal baseline, VLT/FLAMES+GIRAFFE multi-epoch radial velocity survey that will provide the first direct constraints on these parameters. This stu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.3815","kind":"arxiv","version":2},"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":"0909.3815","created_at":"2026-05-18T02:11:45.693287+00:00"},{"alias_kind":"arxiv_version","alias_value":"0909.3815v2","created_at":"2026-05-18T02:11:45.693287+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.3815","created_at":"2026-05-18T02:11:45.693287+00:00"},{"alias_kind":"pith_short_12","alias_value":"HMG3ND7NYERM","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"HMG3ND7NYERMBTA7","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"HMG3ND7N","created_at":"2026-05-18T12:25:59.703012+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/HMG3ND7NYERMBTA7EBUMH7PRXV","json":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV.json","graph_json":"https://pith.science/api/pith-number/HMG3ND7NYERMBTA7EBUMH7PRXV/graph.json","events_json":"https://pith.science/api/pith-number/HMG3ND7NYERMBTA7EBUMH7PRXV/events.json","paper":"https://pith.science/paper/HMG3ND7N"},"agent_actions":{"view_html":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV","download_json":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV.json","view_paper":"https://pith.science/paper/HMG3ND7N","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0909.3815&json=true","fetch_graph":"https://pith.science/api/pith-number/HMG3ND7NYERMBTA7EBUMH7PRXV/graph.json","fetch_events":"https://pith.science/api/pith-number/HMG3ND7NYERMBTA7EBUMH7PRXV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV/action/storage_attestation","attest_author":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV/action/author_attestation","sign_citation":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV/action/citation_signature","submit_replication":"https://pith.science/pith/HMG3ND7NYERMBTA7EBUMH7PRXV/action/replication_record"}},"created_at":"2026-05-18T02:11:45.693287+00:00","updated_at":"2026-05-18T02:11:45.693287+00:00"}