{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:ENZRGMSEW5RY4SOFRRBVFMG7KB","short_pith_number":"pith:ENZRGMSE","schema_version":"1.0","canonical_sha256":"2373133244b7638e49c58c4352b0df506da121ec4625ff175f9d8e32cc4d3c50","source":{"kind":"arxiv","id":"1707.02060","version":1},"attestation_state":"computed","paper":{"title":"A modern study of HD166734: a massive supergiant system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Klotz, C. Nitschelm, E. Gosset, H. Sana, L. Mahy, P. Eenens, Y. Damerdji","submitted_at":"2017-07-07T07:35:32Z","abstract_excerpt":"Aims. HD166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve independently, following single-star evolution so far. This system provides a chance to study the individual parameters of two supergiant massive stars and to derive their real masses. Methods. An intensive monitoring was dedicated to HD166734.We analyzed mid- and high-resolution optical spectra to constrain the orbital parameters of this system. We also studied its light curve for the first tim"},"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":"1707.02060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-07T07:35:32Z","cross_cats_sorted":[],"title_canon_sha256":"0fbbcd1da33a2e6c16099c4db78a9290134057ac5b809f8e25f4acd4765841ab","abstract_canon_sha256":"57f387cd0da976923ca063aef39ddb48890554094a5ce8af33d24c529115ac08"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:55.151451Z","signature_b64":"CvZhQQL1EODxn2jgulm0dDKjmockNrMM9rNiPqWSlJhDyu852fTrTvmnYQe7/F3TjRPy5dzk/A7nvIW7DGIqCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2373133244b7638e49c58c4352b0df506da121ec4625ff175f9d8e32cc4d3c50","last_reissued_at":"2026-05-18T00:29:55.151019Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:55.151019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A modern study of HD166734: a massive supergiant system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Klotz, C. Nitschelm, E. Gosset, H. Sana, L. Mahy, P. Eenens, Y. Damerdji","submitted_at":"2017-07-07T07:35:32Z","abstract_excerpt":"Aims. HD166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve independently, following single-star evolution so far. This system provides a chance to study the individual parameters of two supergiant massive stars and to derive their real masses. Methods. An intensive monitoring was dedicated to HD166734.We analyzed mid- and high-resolution optical spectra to constrain the orbital parameters of this system. We also studied its light curve for the first tim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02060","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":"1707.02060","created_at":"2026-05-18T00:29:55.151082+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.02060v1","created_at":"2026-05-18T00:29:55.151082+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02060","created_at":"2026-05-18T00:29:55.151082+00:00"},{"alias_kind":"pith_short_12","alias_value":"ENZRGMSEW5RY","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_16","alias_value":"ENZRGMSEW5RY4SOF","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_8","alias_value":"ENZRGMSE","created_at":"2026-05-18T12:31:12.930513+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/ENZRGMSEW5RY4SOFRRBVFMG7KB","json":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB.json","graph_json":"https://pith.science/api/pith-number/ENZRGMSEW5RY4SOFRRBVFMG7KB/graph.json","events_json":"https://pith.science/api/pith-number/ENZRGMSEW5RY4SOFRRBVFMG7KB/events.json","paper":"https://pith.science/paper/ENZRGMSE"},"agent_actions":{"view_html":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB","download_json":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB.json","view_paper":"https://pith.science/paper/ENZRGMSE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.02060&json=true","fetch_graph":"https://pith.science/api/pith-number/ENZRGMSEW5RY4SOFRRBVFMG7KB/graph.json","fetch_events":"https://pith.science/api/pith-number/ENZRGMSEW5RY4SOFRRBVFMG7KB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB/action/storage_attestation","attest_author":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB/action/author_attestation","sign_citation":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB/action/citation_signature","submit_replication":"https://pith.science/pith/ENZRGMSEW5RY4SOFRRBVFMG7KB/action/replication_record"}},"created_at":"2026-05-18T00:29:55.151082+00:00","updated_at":"2026-05-18T00:29:55.151082+00:00"}