{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FSMUIWWGEW6BE26PZS3MHWKF3G","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":"d4993def039296da7cb067b4ad70f0159b3f2e5591904c2af8a96ddff9c30b42","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-06T12:56:13Z","title_canon_sha256":"53a4693be496e24f396c19eaa6ea20cb0ebacadc8b73e269c63eccb437c2eec5"},"schema_version":"1.0","source":{"id":"1609.01527","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01527","created_at":"2026-05-18T01:04:10Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01527v1","created_at":"2026-05-18T01:04:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01527","created_at":"2026-05-18T01:04:10Z"},{"alias_kind":"pith_short_12","alias_value":"FSMUIWWGEW6B","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FSMUIWWGEW6BE26P","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FSMUIWWG","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:9f83dc5f20166d41789e563e8b7c7652ed3013751bf2dc03f83515a30589933f","target":"graph","created_at":"2026-05-18T01:04:10Z","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 use Cycle 21 Hubble Space Telescope (HST) observations and HST archival ACS Treasury observations of 30 Galactic Globular Clusters to characterize two distinct stellar populations. A sophisticated Bayesian technique is employed to simultaneously sample the joint posterior distribution of age, distance, and extinction for each cluster, as well as unique helium values for two populations within each cluster and the relative proportion of those populations. We find the helium differences among the two populations in the clusters fall in the range of ~0.04 to 0.11. Because adequate models varyi","authors_text":"A. Sarajedini, D. A. van Dyk, D. C. Stenning, E. Robinson, N. Stein, R. Wagner-Kaiser, T. von Hippel, W. H. Jefferys","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-06T12:56:13Z","title":"Bayesian Analysis of Two Stellar Populations in Galactic Globular Clusters III: Analysis of 30 Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01527","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":"sha256:4909b977445ce51a2a1c2b31acc0f046e26238660059fed931613e71fb9a51f3","target":"record","created_at":"2026-05-18T01:04:10Z","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":"d4993def039296da7cb067b4ad70f0159b3f2e5591904c2af8a96ddff9c30b42","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-06T12:56:13Z","title_canon_sha256":"53a4693be496e24f396c19eaa6ea20cb0ebacadc8b73e269c63eccb437c2eec5"},"schema_version":"1.0","source":{"id":"1609.01527","kind":"arxiv","version":1}},"canonical_sha256":"2c99445ac625bc126bcfccb6c3d945d9a9619c332d8445c320b26ec15c7ce0cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c99445ac625bc126bcfccb6c3d945d9a9619c332d8445c320b26ec15c7ce0cf","first_computed_at":"2026-05-18T01:04:10.019256Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:10.019256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BLa4F7rfPoEf9pWCCNx6l52ltVZiOXifZ+2MJmYehPxDUxbcWB+WS4Sxgn8UfhvBFcaUSONYgpWyBBA7YOviCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:10.019786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.01527","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4909b977445ce51a2a1c2b31acc0f046e26238660059fed931613e71fb9a51f3","sha256:9f83dc5f20166d41789e563e8b7c7652ed3013751bf2dc03f83515a30589933f"],"state_sha256":"791281fb3ef0351029d97f6541efe80f3117c94d696076773ddcd9b9e35b1fe3"}