{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CJHOINNVL3BAK5EEF3BZXZX4P2","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":"8f6b08ee0274bbe51232c0e2f6e3f743f52dd4269299c6e45dedc6e81aa09232","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-13T18:00:02Z","title_canon_sha256":"fa40f9759fa6cb79a4cbba19764d200a59dcdd8f70ef870ceb8584656c1655c5"},"schema_version":"1.0","source":{"id":"1710.05030","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05030","created_at":"2026-05-18T00:17:08Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05030v1","created_at":"2026-05-18T00:17:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05030","created_at":"2026-05-18T00:17:08Z"},{"alias_kind":"pith_short_12","alias_value":"CJHOINNVL3BA","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CJHOINNVL3BAK5EE","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CJHOINNV","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:c2555e585ef904b52e2b2cb210d0112cbdfd57b06ad25f12c66507be1b113604","target":"graph","created_at":"2026-05-18T00:17:08Z","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":"A longstanding problem is identifying the elusive progenitors of Type Ia supernovae (SNe Ia), which can roughly be split into Chandraksekhar and sub-Chandrasekhar mass events. An important difference between these two cases is the nucleosynthetic yield, which is altered by the increased neutron excess in Chandrasekhar progenitors due to their pre-explosion simmering and high central density.\n  From comparison with theoretical nucleosynthesis yields, we show that the chemical composition of the most metal-rich star in the Ursa Minor dwarf galaxy, COS 171, is dominated by nucleosynthesis from a ","authors_text":"Andrew McWilliam, Anthony L. Piro, Carles Badenes, Eduardo Bravo","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-13T18:00:02Z","title":"Evidence for a Sub-Chandrasekhar Mass Type~Ia Supernova in the Ursa Minor Dwarf Galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05030","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":"sha256:2dfc125d68d88fbc417edcc14e4c93f2b9adb6066c29ce910d6c3b9a0b9d566e","target":"record","created_at":"2026-05-18T00:17:08Z","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":"8f6b08ee0274bbe51232c0e2f6e3f743f52dd4269299c6e45dedc6e81aa09232","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-13T18:00:02Z","title_canon_sha256":"fa40f9759fa6cb79a4cbba19764d200a59dcdd8f70ef870ceb8584656c1655c5"},"schema_version":"1.0","source":{"id":"1710.05030","kind":"arxiv","version":1}},"canonical_sha256":"124ee435b55ec20574842ec39be6fc7eacdc2383e5434d4fcf83870fdf6e5b84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"124ee435b55ec20574842ec39be6fc7eacdc2383e5434d4fcf83870fdf6e5b84","first_computed_at":"2026-05-18T00:17:08.838744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:08.838744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OKKu8jfJbdqXU1L0/uWFvq7nHDPJJu8DN4xbc+e+7gHXLxPhYu4pb7uW/OBHgB2UlYfxNlXip2sc9Quq4q2VDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:08.839308Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05030","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2dfc125d68d88fbc417edcc14e4c93f2b9adb6066c29ce910d6c3b9a0b9d566e","sha256:c2555e585ef904b52e2b2cb210d0112cbdfd57b06ad25f12c66507be1b113604"],"state_sha256":"cd7586d7df11dc1827f271b809877cc817e90086c45139886a5f1764f923239e"}