{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:BJ64KNZPZIZ4L4NKQPOQFOTXRY","short_pith_number":"pith:BJ64KNZP","schema_version":"1.0","canonical_sha256":"0a7dc5372fca33c5f1aa83dd02ba778e3c1230812eed6dde688435d80f48df25","source":{"kind":"arxiv","id":"1608.03124","version":1},"attestation_state":"computed","paper":{"title":"The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. X. The radial distribution of stellar populations in NGC 2808","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Antonino P. Milone, Antonio Aparicio, Enrico Vesperini, Giampaolo Piotto, Jongsuk Hong, Luigi R. Bedin, Matteo Simioni","submitted_at":"2016-08-10T11:03:05Z","abstract_excerpt":"Due to their extreme helium abundance, the multiple stellar populations of the globular cluster NGC 2808 have been widely investigated from a photometric, spectroscopic, and kinematic perspective. The most striking feature of the color-magnitude diagram of NGC 2808 is the triple main sequence (MS), with the red MS corresponding to a stellar population with primordial helium, and the middle and the blue MS being enhanced in helium up to Y$\\sim$0.32 and $\\sim$0.38, respectively. A recent study has revealed that this massive cluster hosts at least five distinct stellar populations (A, B, C, D, an"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.03124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-10T11:03:05Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"bf3db92749a9fcf6265840fbb1249b671a0dd5330b53c86fe46ee7cfa7a1159b","abstract_canon_sha256":"d8a413824351274c9da402abfebcc7ee84ea4d70342229d91442fed5b1d2d9f9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:30.211098Z","signature_b64":"mnEiftkugVtVDppmz0Y3giMG1vA3J20Puk9BJCkqgDd8XKCWio06M7wdTb3wZkgneKFcIiNA7NZAUxokN1nfCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a7dc5372fca33c5f1aa83dd02ba778e3c1230812eed6dde688435d80f48df25","last_reissued_at":"2026-05-18T01:09:30.210701Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:30.210701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. X. The radial distribution of stellar populations in NGC 2808","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Antonino P. Milone, Antonio Aparicio, Enrico Vesperini, Giampaolo Piotto, Jongsuk Hong, Luigi R. Bedin, Matteo Simioni","submitted_at":"2016-08-10T11:03:05Z","abstract_excerpt":"Due to their extreme helium abundance, the multiple stellar populations of the globular cluster NGC 2808 have been widely investigated from a photometric, spectroscopic, and kinematic perspective. The most striking feature of the color-magnitude diagram of NGC 2808 is the triple main sequence (MS), with the red MS corresponding to a stellar population with primordial helium, and the middle and the blue MS being enhanced in helium up to Y$\\sim$0.32 and $\\sim$0.38, respectively. A recent study has revealed that this massive cluster hosts at least five distinct stellar populations (A, B, C, D, an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03124","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.03124","created_at":"2026-05-18T01:09:30.210764+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.03124v1","created_at":"2026-05-18T01:09:30.210764+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03124","created_at":"2026-05-18T01:09:30.210764+00:00"},{"alias_kind":"pith_short_12","alias_value":"BJ64KNZPZIZ4","created_at":"2026-05-18T12:30:07.202191+00:00"},{"alias_kind":"pith_short_16","alias_value":"BJ64KNZPZIZ4L4NK","created_at":"2026-05-18T12:30:07.202191+00:00"},{"alias_kind":"pith_short_8","alias_value":"BJ64KNZP","created_at":"2026-05-18T12:30:07.202191+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY","json":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY.json","graph_json":"https://pith.science/api/pith-number/BJ64KNZPZIZ4L4NKQPOQFOTXRY/graph.json","events_json":"https://pith.science/api/pith-number/BJ64KNZPZIZ4L4NKQPOQFOTXRY/events.json","paper":"https://pith.science/paper/BJ64KNZP"},"agent_actions":{"view_html":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY","download_json":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY.json","view_paper":"https://pith.science/paper/BJ64KNZP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.03124&json=true","fetch_graph":"https://pith.science/api/pith-number/BJ64KNZPZIZ4L4NKQPOQFOTXRY/graph.json","fetch_events":"https://pith.science/api/pith-number/BJ64KNZPZIZ4L4NKQPOQFOTXRY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY/action/storage_attestation","attest_author":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY/action/author_attestation","sign_citation":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY/action/citation_signature","submit_replication":"https://pith.science/pith/BJ64KNZPZIZ4L4NKQPOQFOTXRY/action/replication_record"}},"created_at":"2026-05-18T01:09:30.210764+00:00","updated_at":"2026-05-18T01:09:30.210764+00:00"}