{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:45TLLCSOHOYGPFVJCDJUVT57JP","short_pith_number":"pith:45TLLCSO","canonical_record":{"source":{"id":"1510.04271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-14T20:12:23Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"5e537801d0eade656892e2eb9e1379699d91d1d51feee6b6119156707188091f","abstract_canon_sha256":"263573d2f0c7e1f93401cc74ba557fc25df49fa835b2a86712083b0329970b1c"},"schema_version":"1.0"},"canonical_sha256":"e766b58a4e3bb06796a910d34acfbf4bcc0e98596e44a6c9f20ef166e7021b80","source":{"kind":"arxiv","id":"1510.04271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04271","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04271v1","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04271","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"pith_short_12","alias_value":"45TLLCSOHOYG","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"45TLLCSOHOYGPFVJ","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"45TLLCSO","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:45TLLCSOHOYGPFVJCDJUVT57JP","target":"record","payload":{"canonical_record":{"source":{"id":"1510.04271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-14T20:12:23Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"5e537801d0eade656892e2eb9e1379699d91d1d51feee6b6119156707188091f","abstract_canon_sha256":"263573d2f0c7e1f93401cc74ba557fc25df49fa835b2a86712083b0329970b1c"},"schema_version":"1.0"},"canonical_sha256":"e766b58a4e3bb06796a910d34acfbf4bcc0e98596e44a6c9f20ef166e7021b80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:07.583765Z","signature_b64":"gYQNXnLoZcESuqtu3LzkC2tzRiLiRdXjlsbVCJwuS1ngDtDd0ExEgE7klb8qGenMTBnMM7uOKGAx1jOeKUcbAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e766b58a4e3bb06796a910d34acfbf4bcc0e98596e44a6c9f20ef166e7021b80","last_reissued_at":"2026-05-18T01:30:07.583261Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:07.583261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.04271","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":"2026-05-18T01:30:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jfXLcikK+ayRS0X/vwUvmpzgdWI6pqxVmLWmDg0s195O8ATuflBOp9N8eLyL45MCXESibAsPAPnxcpdTAyceCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:38:51.749384Z"},"content_sha256":"52c4ffcbbc484db5fa5807b035401d50ae19380915196e08f8176b9542734f1b","schema_version":"1.0","event_id":"sha256:52c4ffcbbc484db5fa5807b035401d50ae19380915196e08f8176b9542734f1b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:45TLLCSOHOYGPFVJCDJUVT57JP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A correlation between SN II metal line strength and host HII region oxygen abundance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Claudia P. Guti\\'errez, Joseph P. Anderson, Luc Dessart","submitted_at":"2015-10-14T20:12:23Z","abstract_excerpt":"Dessart et al., demonstrated that type II supernova (SN II) model spectra present increasing metal line strength with increasing progenitor metallicity. To confront these models with observations, we obtained a large sample of SN II host HII region emission line spectroscopy. We show that inferred SN II host HII region metallicities have a statistically significant correlation with the strength of SN II metal lines, specifically FeII 5018A."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04271","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":"2026-05-18T01:30:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SK6Ei7ys/5QhzYw1cVHKQExpIuV37zg3w92UiScN/NVCgSNxTfjFlJE6k1pfr2tawr+t0Tj1auVlXdef7pFYCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:38:51.749738Z"},"content_sha256":"35d9f95e771459e89c1497b27e13b1c34f64bc0947b27d0b4a328a082c62b72a","schema_version":"1.0","event_id":"sha256:35d9f95e771459e89c1497b27e13b1c34f64bc0947b27d0b4a328a082c62b72a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/45TLLCSOHOYGPFVJCDJUVT57JP/bundle.json","state_url":"https://pith.science/pith/45TLLCSOHOYGPFVJCDJUVT57JP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/45TLLCSOHOYGPFVJCDJUVT57JP/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":"2026-05-28T09:38:51Z","links":{"resolver":"https://pith.science/pith/45TLLCSOHOYGPFVJCDJUVT57JP","bundle":"https://pith.science/pith/45TLLCSOHOYGPFVJCDJUVT57JP/bundle.json","state":"https://pith.science/pith/45TLLCSOHOYGPFVJCDJUVT57JP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/45TLLCSOHOYGPFVJCDJUVT57JP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:45TLLCSOHOYGPFVJCDJUVT57JP","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":"263573d2f0c7e1f93401cc74ba557fc25df49fa835b2a86712083b0329970b1c","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-14T20:12:23Z","title_canon_sha256":"5e537801d0eade656892e2eb9e1379699d91d1d51feee6b6119156707188091f"},"schema_version":"1.0","source":{"id":"1510.04271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04271","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04271v1","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04271","created_at":"2026-05-18T01:30:07Z"},{"alias_kind":"pith_short_12","alias_value":"45TLLCSOHOYG","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"45TLLCSOHOYGPFVJ","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"45TLLCSO","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:35d9f95e771459e89c1497b27e13b1c34f64bc0947b27d0b4a328a082c62b72a","target":"graph","created_at":"2026-05-18T01:30:07Z","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":"Dessart et al., demonstrated that type II supernova (SN II) model spectra present increasing metal line strength with increasing progenitor metallicity. To confront these models with observations, we obtained a large sample of SN II host HII region emission line spectroscopy. We show that inferred SN II host HII region metallicities have a statistically significant correlation with the strength of SN II metal lines, specifically FeII 5018A.","authors_text":"Claudia P. Guti\\'errez, Joseph P. Anderson, Luc Dessart","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-14T20:12:23Z","title":"A correlation between SN II metal line strength and host HII region oxygen abundance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04271","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":"sha256:52c4ffcbbc484db5fa5807b035401d50ae19380915196e08f8176b9542734f1b","target":"record","created_at":"2026-05-18T01:30:07Z","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":"263573d2f0c7e1f93401cc74ba557fc25df49fa835b2a86712083b0329970b1c","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-14T20:12:23Z","title_canon_sha256":"5e537801d0eade656892e2eb9e1379699d91d1d51feee6b6119156707188091f"},"schema_version":"1.0","source":{"id":"1510.04271","kind":"arxiv","version":1}},"canonical_sha256":"e766b58a4e3bb06796a910d34acfbf4bcc0e98596e44a6c9f20ef166e7021b80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e766b58a4e3bb06796a910d34acfbf4bcc0e98596e44a6c9f20ef166e7021b80","first_computed_at":"2026-05-18T01:30:07.583261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:07.583261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gYQNXnLoZcESuqtu3LzkC2tzRiLiRdXjlsbVCJwuS1ngDtDd0ExEgE7klb8qGenMTBnMM7uOKGAx1jOeKUcbAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:07.583765Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.04271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52c4ffcbbc484db5fa5807b035401d50ae19380915196e08f8176b9542734f1b","sha256:35d9f95e771459e89c1497b27e13b1c34f64bc0947b27d0b4a328a082c62b72a"],"state_sha256":"15f7ba2ef9fe409fd28a634107f61a2b07b68829c15d1badfb96e15ef7fa2da3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QAgpmLxaGYzrcNPFzg3cs8XCiSx51ef9Afjg3jwQ9509DogU0tNM6PObAW7fwNwIi3jFZlmVZU9DhaBXuBiwBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:38:51.751683Z","bundle_sha256":"68972babf3723a3e4a24cab00718861c1b62d1b523e769785521a512c4260096"}}