{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:NY37NENPA5D2DRI3EKOZBZKZ6K","short_pith_number":"pith:NY37NENP","canonical_record":{"source":{"id":"astro-ph/9912314","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-15T15:53:00Z","cross_cats_sorted":[],"title_canon_sha256":"5fe6fbf3000c7599bbbdd3da2cfc3dce125f7125e2e696a25d883224d9da411e","abstract_canon_sha256":"815ec8ceda396c8d53b7b8e6048417959f189cfc3d5ea602680c4ee36ac917a8"},"schema_version":"1.0"},"canonical_sha256":"6e37f691af0747a1c51b229d90e559f2a3722fce16a1d658bde06afce3dc7fb5","source":{"kind":"arxiv","id":"astro-ph/9912314","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9912314","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9912314v1","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9912314","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"pith_short_12","alias_value":"NY37NENPA5D2","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"NY37NENPA5D2DRI3","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"NY37NENP","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:NY37NENPA5D2DRI3EKOZBZKZ6K","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9912314","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-15T15:53:00Z","cross_cats_sorted":[],"title_canon_sha256":"5fe6fbf3000c7599bbbdd3da2cfc3dce125f7125e2e696a25d883224d9da411e","abstract_canon_sha256":"815ec8ceda396c8d53b7b8e6048417959f189cfc3d5ea602680c4ee36ac917a8"},"schema_version":"1.0"},"canonical_sha256":"6e37f691af0747a1c51b229d90e559f2a3722fce16a1d658bde06afce3dc7fb5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:49.750188Z","signature_b64":"Vv8xsXc4YMhXW8svQ5aLJxjutgqw/82nszpjUjKPGaDpTqC/t4FIrdVid2ebWsj8y2Dttd9U14Xv5kFSs/1YDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e37f691af0747a1c51b229d90e559f2a3722fce16a1d658bde06afce3dc7fb5","last_reissued_at":"2026-05-18T01:21:49.749587Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:49.749587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9912314","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":"2026-05-18T01:21:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IMfn0gTz3sGuFpB9t1WMzwFLt129l67nFBGGkl1Qu3MsdqDLct7cBKKxxUbAqdw9bIXtQOCDxFdX6jyZ49dYDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:48:39.442562Z"},"content_sha256":"ea2531cd9ba5098a677cb79f6406774a7a79e3bebfa3b94c63b6ab85c04435df","schema_version":"1.0","event_id":"sha256:ea2531cd9ba5098a677cb79f6406774a7a79e3bebfa3b94c63b6ab85c04435df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:NY37NENPA5D2DRI3EKOZBZKZ6K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"s/alpha/Fe Abundance Ratios in Halo Field Stars: Is there a Globular Cluster Connection?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Astronomy, B.E.J. Pagel (University of Sussex, G. Tautvaisiene (Inst. of Theor. Phys., Lithuania), UK), Vilnius","submitted_at":"1999-12-15T15:53:00Z","abstract_excerpt":"We try to understand the s- and r-process elements vs Ti/Fe plots derived by Jehin et al. (1999) for mildly metal-poor stars within the framework of the analytical semi-empirical models for these elements by Pagel & Tautvaisiene (1995, 1997). Jehin et al. distinguished two Pop II subgroups: IIa with alpha/Fe and s-elements/Fe increasing together, which they attribute to pure SNII activity, and IIb with constant alpha/Fe and a range in s/Fe which they attribute to a prolonged accretion phase in parent globular clusters. However, their sample consists mainly of thick-disk stars with only 4 clear"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9912314","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":"2026-05-18T01:21:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sxApiacUKQoGCe03LeRZOJjdA05zaU0fLj1b2g/PQeOaqsmxVcjCutmOw7dCKraWF1rnojDMr1Dzkb3yhnHSCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:48:39.442951Z"},"content_sha256":"97f8dcccb2b1027dc3605f3119380f484698a287d585c830ae0cb76f5aa856c8","schema_version":"1.0","event_id":"sha256:97f8dcccb2b1027dc3605f3119380f484698a287d585c830ae0cb76f5aa856c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/bundle.json","state_url":"https://pith.science/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/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":"2026-05-28T17:48:39Z","links":{"resolver":"https://pith.science/pith/NY37NENPA5D2DRI3EKOZBZKZ6K","bundle":"https://pith.science/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/bundle.json","state":"https://pith.science/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NY37NENPA5D2DRI3EKOZBZKZ6K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:NY37NENPA5D2DRI3EKOZBZKZ6K","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":"815ec8ceda396c8d53b7b8e6048417959f189cfc3d5ea602680c4ee36ac917a8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-15T15:53:00Z","title_canon_sha256":"5fe6fbf3000c7599bbbdd3da2cfc3dce125f7125e2e696a25d883224d9da411e"},"schema_version":"1.0","source":{"id":"astro-ph/9912314","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9912314","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9912314v1","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9912314","created_at":"2026-05-18T01:21:49Z"},{"alias_kind":"pith_short_12","alias_value":"NY37NENPA5D2","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"NY37NENPA5D2DRI3","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"NY37NENP","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:97f8dcccb2b1027dc3605f3119380f484698a287d585c830ae0cb76f5aa856c8","target":"graph","created_at":"2026-05-18T01:21:49Z","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":"We try to understand the s- and r-process elements vs Ti/Fe plots derived by Jehin et al. (1999) for mildly metal-poor stars within the framework of the analytical semi-empirical models for these elements by Pagel & Tautvaisiene (1995, 1997). Jehin et al. distinguished two Pop II subgroups: IIa with alpha/Fe and s-elements/Fe increasing together, which they attribute to pure SNII activity, and IIb with constant alpha/Fe and a range in s/Fe which they attribute to a prolonged accretion phase in parent globular clusters. However, their sample consists mainly of thick-disk stars with only 4 clear","authors_text":"Astronomy, B.E.J. Pagel (University of Sussex, G. Tautvaisiene (Inst. of Theor. Phys., Lithuania), UK), Vilnius","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-12-15T15:53:00Z","title":"s/alpha/Fe Abundance Ratios in Halo Field Stars: Is there a Globular Cluster Connection?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9912314","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:ea2531cd9ba5098a677cb79f6406774a7a79e3bebfa3b94c63b6ab85c04435df","target":"record","created_at":"2026-05-18T01:21:49Z","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":"815ec8ceda396c8d53b7b8e6048417959f189cfc3d5ea602680c4ee36ac917a8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-15T15:53:00Z","title_canon_sha256":"5fe6fbf3000c7599bbbdd3da2cfc3dce125f7125e2e696a25d883224d9da411e"},"schema_version":"1.0","source":{"id":"astro-ph/9912314","kind":"arxiv","version":1}},"canonical_sha256":"6e37f691af0747a1c51b229d90e559f2a3722fce16a1d658bde06afce3dc7fb5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e37f691af0747a1c51b229d90e559f2a3722fce16a1d658bde06afce3dc7fb5","first_computed_at":"2026-05-18T01:21:49.749587Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:49.749587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vv8xsXc4YMhXW8svQ5aLJxjutgqw/82nszpjUjKPGaDpTqC/t4FIrdVid2ebWsj8y2Dttd9U14Xv5kFSs/1YDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:49.750188Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9912314","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea2531cd9ba5098a677cb79f6406774a7a79e3bebfa3b94c63b6ab85c04435df","sha256:97f8dcccb2b1027dc3605f3119380f484698a287d585c830ae0cb76f5aa856c8"],"state_sha256":"de4429b4b8c052805fe79c3063ce21faff01a836eb40b91103abaa6340f2e1b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9E33Qrz1gLJ79gw5JrxQgDTaBrmYyfR6Pit6xWZqBKG5b5cPU/tda9INxK+w0jpBIAfOwPDd/saDz3zkZDW0Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:48:39.445921Z","bundle_sha256":"2dcad6f6f42eac51c65a29d808229b1444c6b9822bac29a6e1f409c389d23d7f"}}