{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:OOLIMBFFTMYRVFG2MJ4HHZEDK4","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":"56e18e3eaebbcfb2950fa30bc7bcb178d70a23f70add2119d6c3b059b9fb3a30","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-06-21T17:42:55Z","title_canon_sha256":"616cbf76b04d8f52a63877d4e47cf7662df6df5cb702bde6bff846ff20ad1136"},"schema_version":"1.0","source":{"id":"2206.10564","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.10564","created_at":"2026-07-05T04:33:48Z"},{"alias_kind":"arxiv_version","alias_value":"2206.10564v1","created_at":"2026-07-05T04:33:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.10564","created_at":"2026-07-05T04:33:48Z"},{"alias_kind":"pith_short_12","alias_value":"OOLIMBFFTMYR","created_at":"2026-07-05T04:33:48Z"},{"alias_kind":"pith_short_16","alias_value":"OOLIMBFFTMYRVFG2","created_at":"2026-07-05T04:33:48Z"},{"alias_kind":"pith_short_8","alias_value":"OOLIMBFF","created_at":"2026-07-05T04:33:48Z"}],"graph_snapshots":[{"event_id":"sha256:505013c2cd89d37b3041ef4ee701a63039a4a8808d3f57004f779fb371c539d2","target":"graph","created_at":"2026-07-05T04:33:48Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2206.10564/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams. Most Galactic and extragalactic clusters exhibit internal variations of He, C, N, O, Na, and Al. They host two distinct stellar populations: the first population of stars, which resemble field stars with similar metallicities, and one or more second stellar populations that show the signature of high-temperature H-burning. In addition, a sub-sample of clusters hosts stellar","authors_text":"Anna F. Marino, Antonino P. Milone","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-06-21T17:42:55Z","title":"Multiple Populations in Star Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.10564","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":"sha256:5fb8b9f76c7bc49ba7e45fb5a513d8c7fbc50b770f9f0e4f2faf8a29e8f9fc2b","target":"record","created_at":"2026-07-05T04:33:48Z","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":"56e18e3eaebbcfb2950fa30bc7bcb178d70a23f70add2119d6c3b059b9fb3a30","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-06-21T17:42:55Z","title_canon_sha256":"616cbf76b04d8f52a63877d4e47cf7662df6df5cb702bde6bff846ff20ad1136"},"schema_version":"1.0","source":{"id":"2206.10564","kind":"arxiv","version":1}},"canonical_sha256":"73968604a59b311a94da627873e4835709a516e89ad1f546cd94ed912d57ed84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73968604a59b311a94da627873e4835709a516e89ad1f546cd94ed912d57ed84","first_computed_at":"2026-07-05T04:33:48.926379Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:33:48.926379Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l5uczxAhai7GPYqixRfLI218eBFScXTWx8ytF5TYh5ocM3OP5Eo1g4upqX2NGYkQboK0ISbRCSU6LR8okr4bBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:33:48.926818Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.10564","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fb8b9f76c7bc49ba7e45fb5a513d8c7fbc50b770f9f0e4f2faf8a29e8f9fc2b","sha256:505013c2cd89d37b3041ef4ee701a63039a4a8808d3f57004f779fb371c539d2"],"state_sha256":"1ba5d3f355b232ba3a8e17af6086ae52490c17f1ec3898785e818580f1f1a4ca"}