{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:7PFF6SDXM6ISGRSFHFCIPFRH7W","short_pith_number":"pith:7PFF6SDX","schema_version":"1.0","canonical_sha256":"fbca5f487767912346453944879627fd859c8ac6461221ee52a323d653a99ea4","source":{"kind":"arxiv","id":"1207.5807","version":2},"attestation_state":"computed","paper":{"title":"A Binary Progenitor for the Type IIb Supernova 2011dh in M51","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Ken'ichi Nomoto, Melina C. Bersten, Omar G. Benvenuto","submitted_at":"2012-07-24T20:04:48Z","abstract_excerpt":"We perform binary stellar evolutionary calculations following the simultaneous evolution of both stars in the system to study a potential progenitor system for the Type IIb supernova 2011dh. Pre-explosion photometry as well as light-curve modeling have provided constraints on the physical properties of the progenitor system. Here we present a close binary system that is compatible with such constraints. The system is formed by stars of solar composition with 16 Msun + 10 Msun on a circular orbit with an initial period of 125 days. The primary star ends its evolution as a yellow supergiant 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":"1207.5807","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-24T20:04:48Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"90694b43cc73fb655f9100d4c331baedb1956db1efff1a4ea3329327cb7168f9","abstract_canon_sha256":"58e72c188c962662d1e2d3b5aa14db428138f32237ee41017c09cb241a2b6067"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:08.152973Z","signature_b64":"KGTVt2eg2ZM0BVX+ApRvtPGbkA0QXKtTBzonU9+B9fcFB5BkmXbafZzbHjTdeaGuRw9K/oZ84RUDKOnuFybmAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbca5f487767912346453944879627fd859c8ac6461221ee52a323d653a99ea4","last_reissued_at":"2026-05-18T01:56:08.152309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:08.152309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Binary Progenitor for the Type IIb Supernova 2011dh in M51","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Ken'ichi Nomoto, Melina C. Bersten, Omar G. Benvenuto","submitted_at":"2012-07-24T20:04:48Z","abstract_excerpt":"We perform binary stellar evolutionary calculations following the simultaneous evolution of both stars in the system to study a potential progenitor system for the Type IIb supernova 2011dh. Pre-explosion photometry as well as light-curve modeling have provided constraints on the physical properties of the progenitor system. Here we present a close binary system that is compatible with such constraints. The system is formed by stars of solar composition with 16 Msun + 10 Msun on a circular orbit with an initial period of 125 days. The primary star ends its evolution as a yellow supergiant with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.5807","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":"1207.5807","created_at":"2026-05-18T01:56:08.152426+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.5807v2","created_at":"2026-05-18T01:56:08.152426+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.5807","created_at":"2026-05-18T01:56:08.152426+00:00"},{"alias_kind":"pith_short_12","alias_value":"7PFF6SDXM6IS","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_16","alias_value":"7PFF6SDXM6ISGRSF","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_8","alias_value":"7PFF6SDX","created_at":"2026-05-18T12:26:58.693483+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/7PFF6SDXM6ISGRSFHFCIPFRH7W","json":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W.json","graph_json":"https://pith.science/api/pith-number/7PFF6SDXM6ISGRSFHFCIPFRH7W/graph.json","events_json":"https://pith.science/api/pith-number/7PFF6SDXM6ISGRSFHFCIPFRH7W/events.json","paper":"https://pith.science/paper/7PFF6SDX"},"agent_actions":{"view_html":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W","download_json":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W.json","view_paper":"https://pith.science/paper/7PFF6SDX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.5807&json=true","fetch_graph":"https://pith.science/api/pith-number/7PFF6SDXM6ISGRSFHFCIPFRH7W/graph.json","fetch_events":"https://pith.science/api/pith-number/7PFF6SDXM6ISGRSFHFCIPFRH7W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W/action/storage_attestation","attest_author":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W/action/author_attestation","sign_citation":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W/action/citation_signature","submit_replication":"https://pith.science/pith/7PFF6SDXM6ISGRSFHFCIPFRH7W/action/replication_record"}},"created_at":"2026-05-18T01:56:08.152426+00:00","updated_at":"2026-05-18T01:56:08.152426+00:00"}