{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:AY3CR3K4DR2XSCXNKGC7W5IFCP","short_pith_number":"pith:AY3CR3K4","schema_version":"1.0","canonical_sha256":"063628ed5c1c75790aed5185fb750513c579597e5f068b6151b8df3d179c30af","source":{"kind":"arxiv","id":"1808.05582","version":2},"attestation_state":"computed","paper":{"title":"Ruprecht 106: A riddle, wrapped in a mystery, inside an enigma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Aaron Dotter, Anna F. Marino, Antonino P. Milone, Ata Sarajedini, Charlie Conroy","submitted_at":"2018-08-16T16:58:49Z","abstract_excerpt":"Galactic globular clusters (GCs) show overwhelming photometric and spectroscopic evidence for the existence of multiple stellar populations. The question of whether or not there exists a GC that represents a true 'simple stellar population' remains open. Here we focus on Ruprecht 106 (R106), a halo GC with [Fe/H]=-1.5 and [alpha/Fe]~0. A previous spectroscopic study found no sign of the Na-O anticorrelation among 9 of its brightest red giants, which led to the conclusion that R106 is a true simple stellar population GC. Here we present new Hubble Space Telescope (HST) Wide Field Camera 3 photo"},"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":"1808.05582","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-08-16T16:58:49Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"2fa8d2b3aa16c68fa90467c768402ccc218f948ebf29c102ad0f125e1df6d1f4","abstract_canon_sha256":"097dc5088952749fa71739d7f5d1cad74e52cd206af70d21b6fbc42d179ee334"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:13.749285Z","signature_b64":"jMPho2josVQWduw57LqFgCPSY/2LGF23/dX5HcrMUVM5WFJ/JUbwHerUNVWVqScwFDu8zsNnf8yNrGc6jBDODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"063628ed5c1c75790aed5185fb750513c579597e5f068b6151b8df3d179c30af","last_reissued_at":"2026-05-18T00:05:13.748613Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:13.748613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ruprecht 106: A riddle, wrapped in a mystery, inside an enigma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Aaron Dotter, Anna F. Marino, Antonino P. Milone, Ata Sarajedini, Charlie Conroy","submitted_at":"2018-08-16T16:58:49Z","abstract_excerpt":"Galactic globular clusters (GCs) show overwhelming photometric and spectroscopic evidence for the existence of multiple stellar populations. The question of whether or not there exists a GC that represents a true 'simple stellar population' remains open. Here we focus on Ruprecht 106 (R106), a halo GC with [Fe/H]=-1.5 and [alpha/Fe]~0. A previous spectroscopic study found no sign of the Na-O anticorrelation among 9 of its brightest red giants, which led to the conclusion that R106 is a true simple stellar population GC. Here we present new Hubble Space Telescope (HST) Wide Field Camera 3 photo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05582","kind":"arxiv","version":2},"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":"1808.05582","created_at":"2026-05-18T00:05:13.748724+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.05582v2","created_at":"2026-05-18T00:05:13.748724+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.05582","created_at":"2026-05-18T00:05:13.748724+00:00"},{"alias_kind":"pith_short_12","alias_value":"AY3CR3K4DR2X","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_16","alias_value":"AY3CR3K4DR2XSCXN","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_8","alias_value":"AY3CR3K4","created_at":"2026-05-18T12:32:13.499390+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/AY3CR3K4DR2XSCXNKGC7W5IFCP","json":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP.json","graph_json":"https://pith.science/api/pith-number/AY3CR3K4DR2XSCXNKGC7W5IFCP/graph.json","events_json":"https://pith.science/api/pith-number/AY3CR3K4DR2XSCXNKGC7W5IFCP/events.json","paper":"https://pith.science/paper/AY3CR3K4"},"agent_actions":{"view_html":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP","download_json":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP.json","view_paper":"https://pith.science/paper/AY3CR3K4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.05582&json=true","fetch_graph":"https://pith.science/api/pith-number/AY3CR3K4DR2XSCXNKGC7W5IFCP/graph.json","fetch_events":"https://pith.science/api/pith-number/AY3CR3K4DR2XSCXNKGC7W5IFCP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP/action/storage_attestation","attest_author":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP/action/author_attestation","sign_citation":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP/action/citation_signature","submit_replication":"https://pith.science/pith/AY3CR3K4DR2XSCXNKGC7W5IFCP/action/replication_record"}},"created_at":"2026-05-18T00:05:13.748724+00:00","updated_at":"2026-05-18T00:05:13.748724+00:00"}