{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:O545YNSZSAPEUTMD25WSNDPZA2","short_pith_number":"pith:O545YNSZ","canonical_record":{"source":{"id":"1104.1618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-04-08T18:00:32Z","cross_cats_sorted":[],"title_canon_sha256":"4c5d7d455cb029ff25c221f4e1ab9b5acb497366404d4aba45ecbccbcb9fb0fb","abstract_canon_sha256":"02bc7422073be6001725a98f793d3beae3cc61cf3cf9f725b479f380094b7f4b"},"schema_version":"1.0"},"canonical_sha256":"7779dc3659901e4a4d83d76d268df90699e8d79f28b6f9f85b1bd8ef15b8f0f9","source":{"kind":"arxiv","id":"1104.1618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1618","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1618v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1618","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"O545YNSZSAPE","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"O545YNSZSAPEUTMD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"O545YNSZ","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:O545YNSZSAPEUTMD25WSNDPZA2","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-04-08T18:00:32Z","cross_cats_sorted":[],"title_canon_sha256":"4c5d7d455cb029ff25c221f4e1ab9b5acb497366404d4aba45ecbccbcb9fb0fb","abstract_canon_sha256":"02bc7422073be6001725a98f793d3beae3cc61cf3cf9f725b479f380094b7f4b"},"schema_version":"1.0"},"canonical_sha256":"7779dc3659901e4a4d83d76d268df90699e8d79f28b6f9f85b1bd8ef15b8f0f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:36.193767Z","signature_b64":"O8U7fJtRqFIdH+PLsMH9KEgbfAm+TB4WWUhN552ubv0OuVhZIwid1hH74G73vDOHaVtr4BNe/OMAzUhPX6FeDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7779dc3659901e4a4d83d76d268df90699e8d79f28b6f9f85b1bd8ef15b8f0f9","last_reissued_at":"2026-05-18T02:02:36.193078Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:36.193078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1618","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YmeSvTGYYw2JyKMcKHAavBKwpLDHvESaacBl7aIgErXLU5rCO8kh6i9rIerROCy/Hjlt0wCBqUIycYwTA1+AAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:50:38.879146Z"},"content_sha256":"cbe33b1ee8fcc70c34655e30ef2d9ddce6819d9ef4203a04f851ff9207b76785","schema_version":"1.0","event_id":"sha256:cbe33b1ee8fcc70c34655e30ef2d9ddce6819d9ef4203a04f851ff9207b76785"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:O545YNSZSAPEUTMD25WSNDPZA2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical abundance anticorrelations in globular cluster stars: The effect on cluster integrated spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"M. Salaris, P. Coelho, S. Percival","submitted_at":"2011-04-08T18:00:32Z","abstract_excerpt":"It is widely accepted that individual Galactic globular clusters harbor two coeval generations of stars, the first one born with the `standard' $\\alpha$-enhanced metal mixture observed in field Halo objects, the second one characterized by an anticorrelated CN-ONa abundance pattern overimposed on the first generation, $\\alpha$-enhanced metal mixture. We have investigated with appropriate stellar population synthesis models how this second generation of stars affects the integrated spectrum of a typical metal rich Galactic globular cluster, like 47\\,Tuc, focusing our analysis on the widely used"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1618","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QN4KSebrfcGZuO/wDQexllvVwLMxmR17Z6yazrKeV8grMo3MPTmoLiWMO2Ai+bSmFqm30P2VreuLfYWO2NT7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:50:38.879689Z"},"content_sha256":"0791a3362e8cdf2625bc75538f5564560dae8f5b0196c70f2e10f7977a449c67","schema_version":"1.0","event_id":"sha256:0791a3362e8cdf2625bc75538f5564560dae8f5b0196c70f2e10f7977a449c67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O545YNSZSAPEUTMD25WSNDPZA2/bundle.json","state_url":"https://pith.science/pith/O545YNSZSAPEUTMD25WSNDPZA2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O545YNSZSAPEUTMD25WSNDPZA2/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":"2026-06-07T02:50:38Z","links":{"resolver":"https://pith.science/pith/O545YNSZSAPEUTMD25WSNDPZA2","bundle":"https://pith.science/pith/O545YNSZSAPEUTMD25WSNDPZA2/bundle.json","state":"https://pith.science/pith/O545YNSZSAPEUTMD25WSNDPZA2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O545YNSZSAPEUTMD25WSNDPZA2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:O545YNSZSAPEUTMD25WSNDPZA2","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":"02bc7422073be6001725a98f793d3beae3cc61cf3cf9f725b479f380094b7f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-04-08T18:00:32Z","title_canon_sha256":"4c5d7d455cb029ff25c221f4e1ab9b5acb497366404d4aba45ecbccbcb9fb0fb"},"schema_version":"1.0","source":{"id":"1104.1618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1618","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1618v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1618","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"O545YNSZSAPE","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"O545YNSZSAPEUTMD","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"O545YNSZ","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:0791a3362e8cdf2625bc75538f5564560dae8f5b0196c70f2e10f7977a449c67","target":"graph","created_at":"2026-05-18T02:02:36Z","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":"It is widely accepted that individual Galactic globular clusters harbor two coeval generations of stars, the first one born with the `standard' $\\alpha$-enhanced metal mixture observed in field Halo objects, the second one characterized by an anticorrelated CN-ONa abundance pattern overimposed on the first generation, $\\alpha$-enhanced metal mixture. We have investigated with appropriate stellar population synthesis models how this second generation of stars affects the integrated spectrum of a typical metal rich Galactic globular cluster, like 47\\,Tuc, focusing our analysis on the widely used","authors_text":"M. Salaris, P. Coelho, S. Percival","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-04-08T18:00:32Z","title":"Chemical abundance anticorrelations in globular cluster stars: The effect on cluster integrated spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1618","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:cbe33b1ee8fcc70c34655e30ef2d9ddce6819d9ef4203a04f851ff9207b76785","target":"record","created_at":"2026-05-18T02:02:36Z","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":"02bc7422073be6001725a98f793d3beae3cc61cf3cf9f725b479f380094b7f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-04-08T18:00:32Z","title_canon_sha256":"4c5d7d455cb029ff25c221f4e1ab9b5acb497366404d4aba45ecbccbcb9fb0fb"},"schema_version":"1.0","source":{"id":"1104.1618","kind":"arxiv","version":1}},"canonical_sha256":"7779dc3659901e4a4d83d76d268df90699e8d79f28b6f9f85b1bd8ef15b8f0f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7779dc3659901e4a4d83d76d268df90699e8d79f28b6f9f85b1bd8ef15b8f0f9","first_computed_at":"2026-05-18T02:02:36.193078Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:36.193078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O8U7fJtRqFIdH+PLsMH9KEgbfAm+TB4WWUhN552ubv0OuVhZIwid1hH74G73vDOHaVtr4BNe/OMAzUhPX6FeDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:36.193767Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbe33b1ee8fcc70c34655e30ef2d9ddce6819d9ef4203a04f851ff9207b76785","sha256:0791a3362e8cdf2625bc75538f5564560dae8f5b0196c70f2e10f7977a449c67"],"state_sha256":"6381fb82e197d19d684a4733de8065c2a8f5e96ea2692fa979d9c22bac8d0e2f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W9biBpk8ZNp4f9/4Dh16UYVKYw/oe7RABvUVrp5KDd/e7zQIhvjWiXndA5T9VQBH+D1XLRRGNL3Xwu7NKwv9Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T02:50:38.882479Z","bundle_sha256":"f5f5611e7ba05729918752cb129544d64b9994117d1737362951bbd3a5546844"}}