{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2DPSVJ2SVAB25IYMKBGFNAHQ5N","short_pith_number":"pith:2DPSVJ2S","canonical_record":{"source":{"id":"1111.1503","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-07T08:38:14Z","cross_cats_sorted":[],"title_canon_sha256":"0584e48ac69810a96cb03f710d423d32d353d2d7c5b104ffd82e4a7ae464352a","abstract_canon_sha256":"653151a5d85567676025f67f046c9b0678b2f724eb9a39fdc4875462cd3d51ab"},"schema_version":"1.0"},"canonical_sha256":"d0df2aa752a803aea30c504c5680f0eb5ffccfef89f4952202bd740a5c456b59","source":{"kind":"arxiv","id":"1111.1503","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.1503","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"arxiv_version","alias_value":"1111.1503v1","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1503","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"pith_short_12","alias_value":"2DPSVJ2SVAB2","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2DPSVJ2SVAB25IYM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2DPSVJ2S","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2DPSVJ2SVAB25IYMKBGFNAHQ5N","target":"record","payload":{"canonical_record":{"source":{"id":"1111.1503","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-07T08:38:14Z","cross_cats_sorted":[],"title_canon_sha256":"0584e48ac69810a96cb03f710d423d32d353d2d7c5b104ffd82e4a7ae464352a","abstract_canon_sha256":"653151a5d85567676025f67f046c9b0678b2f724eb9a39fdc4875462cd3d51ab"},"schema_version":"1.0"},"canonical_sha256":"d0df2aa752a803aea30c504c5680f0eb5ffccfef89f4952202bd740a5c456b59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:09:25.955706Z","signature_b64":"e8CvZqdbPM4jswgf5eG8AIn/IV/z4U/uq3IFWDDZ7VR1wTG5HjoY3mKB+G4DVxANmzS4ETKwRYjJSc9DeaoeCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0df2aa752a803aea30c504c5680f0eb5ffccfef89f4952202bd740a5c456b59","last_reissued_at":"2026-05-18T04:09:25.955173Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:09:25.955173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.1503","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:09:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ALsM5rVHAVCbBFKs3DlT2UlrVSTuXOpcrqV18Xr21VMmkiDPc3FjivSpSP5Auap/i4Y0wOgND5/aaonNccGyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:05:02.354575Z"},"content_sha256":"16f950ab3b28578d95e8a43cae25ce471e40cffbaa8c2e12cd7c0cca65b48dc7","schema_version":"1.0","event_id":"sha256:16f950ab3b28578d95e8a43cae25ce471e40cffbaa8c2e12cd7c0cca65b48dc7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2DPSVJ2SVAB25IYMKBGFNAHQ5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Helium star donor channel to type Ia supernovae and their surviving companion stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Bo Wang, Zhanwen Han","submitted_at":"2011-11-07T08:38:14Z","abstract_excerpt":"Employing Eggleton's stellar evolution code with the optically thick wind assumption, we systematically studied the He star donor channel of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (WD) accretes material from a He main-sequence star or a He subgiant to increase its mass to the Chandrasekhar mass. We mapped out the initial parameters for producing SNe Ia in the orbital period--secondary mass plane for various WD masses from this channel. Based on a detailed binary population synthesis approach, we find that this channel can produce SNe Ia with short delay times (\\sim10"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1503","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:09:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6i1IEJa0G+8YU+gCd6OwYmwvQaodszEQ1fCjEzY09SzVc6kkD6dMte5DZI1ljDz2TiU5AXhzbXAp9CL4lo8PCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:05:02.354944Z"},"content_sha256":"cefa6cdfbdc2d1137cab78d3364cf96b9ff31b8c456c54b450b1d164854d5d31","schema_version":"1.0","event_id":"sha256:cefa6cdfbdc2d1137cab78d3364cf96b9ff31b8c456c54b450b1d164854d5d31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/bundle.json","state_url":"https://pith.science/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T02:05:02Z","links":{"resolver":"https://pith.science/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N","bundle":"https://pith.science/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/bundle.json","state":"https://pith.science/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2DPSVJ2SVAB25IYMKBGFNAHQ5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2DPSVJ2SVAB25IYMKBGFNAHQ5N","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"653151a5d85567676025f67f046c9b0678b2f724eb9a39fdc4875462cd3d51ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-07T08:38:14Z","title_canon_sha256":"0584e48ac69810a96cb03f710d423d32d353d2d7c5b104ffd82e4a7ae464352a"},"schema_version":"1.0","source":{"id":"1111.1503","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.1503","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"arxiv_version","alias_value":"1111.1503v1","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1503","created_at":"2026-05-18T04:09:25Z"},{"alias_kind":"pith_short_12","alias_value":"2DPSVJ2SVAB2","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2DPSVJ2SVAB25IYM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2DPSVJ2S","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:cefa6cdfbdc2d1137cab78d3364cf96b9ff31b8c456c54b450b1d164854d5d31","target":"graph","created_at":"2026-05-18T04:09:25Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Employing Eggleton's stellar evolution code with the optically thick wind assumption, we systematically studied the He star donor channel of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (WD) accretes material from a He main-sequence star or a He subgiant to increase its mass to the Chandrasekhar mass. We mapped out the initial parameters for producing SNe Ia in the orbital period--secondary mass plane for various WD masses from this channel. Based on a detailed binary population synthesis approach, we find that this channel can produce SNe Ia with short delay times (\\sim10","authors_text":"Bo Wang, Zhanwen Han","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-07T08:38:14Z","title":"Helium star donor channel to type Ia supernovae and their surviving companion stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1503","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:16f950ab3b28578d95e8a43cae25ce471e40cffbaa8c2e12cd7c0cca65b48dc7","target":"record","created_at":"2026-05-18T04:09:25Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"653151a5d85567676025f67f046c9b0678b2f724eb9a39fdc4875462cd3d51ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-11-07T08:38:14Z","title_canon_sha256":"0584e48ac69810a96cb03f710d423d32d353d2d7c5b104ffd82e4a7ae464352a"},"schema_version":"1.0","source":{"id":"1111.1503","kind":"arxiv","version":1}},"canonical_sha256":"d0df2aa752a803aea30c504c5680f0eb5ffccfef89f4952202bd740a5c456b59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0df2aa752a803aea30c504c5680f0eb5ffccfef89f4952202bd740a5c456b59","first_computed_at":"2026-05-18T04:09:25.955173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:09:25.955173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e8CvZqdbPM4jswgf5eG8AIn/IV/z4U/uq3IFWDDZ7VR1wTG5HjoY3mKB+G4DVxANmzS4ETKwRYjJSc9DeaoeCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:09:25.955706Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.1503","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16f950ab3b28578d95e8a43cae25ce471e40cffbaa8c2e12cd7c0cca65b48dc7","sha256:cefa6cdfbdc2d1137cab78d3364cf96b9ff31b8c456c54b450b1d164854d5d31"],"state_sha256":"c1ce8b91c30f16b84e35ae87b27ac99efd24d3979d74f9a2c3308f203b887df2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ra09+gQHUhqxnkIYse6YKAInktLV0z5CxVM17XQJKEx+7Qjlb3AWA2wQGg4byWI5EBZBo3I04zdm99CgGVksAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T02:05:02.356873Z","bundle_sha256":"d08b21e33f4ab902e90d8ba8274279dcc2aab83f88d6dd286284c7e0d7864db7"}}