{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GDUAN46W76S4SYRNPEIOSI4O3K","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":"702d123703ccbf3be1c39d02a5ed8e393ca841672a52b403976065350cd45e05","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-03T09:01:00Z","title_canon_sha256":"929d444c0b0b1ff58b6cb9e88711e0f1557332fdd111e80d78e7ebfc28fa5746"},"schema_version":"1.0","source":{"id":"1610.00451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.00451","created_at":"2026-05-18T01:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1610.00451v1","created_at":"2026-05-18T01:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.00451","created_at":"2026-05-18T01:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"GDUAN46W76S4","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GDUAN46W76S4SYRN","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GDUAN46W","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:3d738050121a0a96d21b8ba0bfed300072acb22e9304087babcaf430edb9a5cf","target":"graph","created_at":"2026-05-18T01:02:36Z","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":"We use high-precision photometry of red-giant-branch (RGB) stars in 57 Galactic globular clusters (GCs), mostly from the `Hubble Space Telescope (HST) UV Legacy Survey of Galactic globular clusters', to identify and characterize their multiple stellar populations. For each cluster the pseudo two-color diagram (or `chromosome map') is presented, built with a suitable combination of stellar magnitudes in the F275W, F336W, F438W and F814W filters that maximizes the separation between multiple populations. In the chromosome map of most GCs (Type I clusters), stars separate in two distinct groups t","authors_text":"A. Aparicio, A. Bellini, A. F. Marino, A. P. Milone, A. Renzini, A. Sarajedini, B. Barbuy, D. Nardiello, D. Yong, E. Vesperini, F. D'Antona, G. Piotto, I. R. King, J. Anderson, L. R. Bedin, M. Salaris, R. P. van der Marel, S. Cassisi, S. Ortolani, T. M. Brown","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-03T09:01:00Z","title":"The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. IX. The Atlas of Multiple Stellar Populations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.00451","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":"sha256:2d2c193ba0c90e51325a478699ba714d8df849e70cebf4bacec686fe646046a0","target":"record","created_at":"2026-05-18T01:02:36Z","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":"702d123703ccbf3be1c39d02a5ed8e393ca841672a52b403976065350cd45e05","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-03T09:01:00Z","title_canon_sha256":"929d444c0b0b1ff58b6cb9e88711e0f1557332fdd111e80d78e7ebfc28fa5746"},"schema_version":"1.0","source":{"id":"1610.00451","kind":"arxiv","version":1}},"canonical_sha256":"30e806f3d6ffa5c9622d7910e9238edaa5e9909722a9f771c08d88a91bc8b049","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30e806f3d6ffa5c9622d7910e9238edaa5e9909722a9f771c08d88a91bc8b049","first_computed_at":"2026-05-18T01:02:36.206522Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:36.206522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zo5g9c7AP1rvtH8unwjbaxrXi1n+J3YRZvhZvAsvVbwLOWLZv0EOq9WdQVHIXVMm4zY8dCsJebXIgIj95NdwAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:36.207086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.00451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d2c193ba0c90e51325a478699ba714d8df849e70cebf4bacec686fe646046a0","sha256:3d738050121a0a96d21b8ba0bfed300072acb22e9304087babcaf430edb9a5cf"],"state_sha256":"89b3f9fbf19ffe90c9eda098c259322a1248a4e76be8cd29f552cfaedbbdd106"}