{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:3XK4L64Y6D4XIH2HTA4WTYUBW4","short_pith_number":"pith:3XK4L64Y","schema_version":"1.0","canonical_sha256":"ddd5c5fb98f0f9741f47983969e281b72dd5ffef1fdfea3b11f4af29d811cf20","source":{"kind":"arxiv","id":"2602.23904","version":2},"attestation_state":"computed","paper":{"title":"Age and metallicity of the Milky Way's nuclear star cluster studied at 3 pc from Sagittarius A*","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Feldmeier-Krause, \\'A. Mart\\'inez-Arranz, E. Gallego-Cano, F. Nogueras-Lara, K. Muzic, M. W. Hosek Jr., R. Sch\\\"odel, T. K. Fritz","submitted_at":"2026-02-27T10:53:24Z","abstract_excerpt":"The Milky Way's nuclear star cluster (NSC) is a unique laboratory to study the formation and evolution of dense stellar systems around a supermassive black hole. Previous work suggests that most stars in the NSC are old; however, the detailed age and metallicity distributions remain uncertain. We constrain the star formation history (SFH) and metallicity of a poorly explored region located $\\sim$3 pc from SagittariusA*.\n  We analyse VLT/NACO imaging in an intermediate-band filter centred at 2.24 $\\mu$m, complemented by $H$-band data. We construct completeness-corrected $K$-band luminosity func"},"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":"2602.23904","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-02-27T10:53:24Z","cross_cats_sorted":[],"title_canon_sha256":"e04f7de2ba5cfe14a166c8b397130d3b6bae673489bafa5d2023045a6d0253e9","abstract_canon_sha256":"61f4ab941ccee20abf7dc6dfbdbaaacb09bbecc8e0b1ebc5492c37588266259f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-10T00:18:43.997967Z","signature_b64":"Aovvech+KbP3HX1M+CrQQn4Fd7kMVhS61QjS3qz5qcmwCCpP/9ioeLoPeNHizJTB6irjDqIZWr55jFJAWjDhBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ddd5c5fb98f0f9741f47983969e281b72dd5ffef1fdfea3b11f4af29d811cf20","last_reissued_at":"2026-07-10T00:18:43.997484Z","signature_status":"signed_v1","first_computed_at":"2026-07-10T00:18:43.997484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Age and metallicity of the Milky Way's nuclear star cluster studied at 3 pc from Sagittarius A*","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Feldmeier-Krause, \\'A. Mart\\'inez-Arranz, E. Gallego-Cano, F. Nogueras-Lara, K. Muzic, M. W. Hosek Jr., R. Sch\\\"odel, T. K. Fritz","submitted_at":"2026-02-27T10:53:24Z","abstract_excerpt":"The Milky Way's nuclear star cluster (NSC) is a unique laboratory to study the formation and evolution of dense stellar systems around a supermassive black hole. Previous work suggests that most stars in the NSC are old; however, the detailed age and metallicity distributions remain uncertain. We constrain the star formation history (SFH) and metallicity of a poorly explored region located $\\sim$3 pc from SagittariusA*.\n  We analyse VLT/NACO imaging in an intermediate-band filter centred at 2.24 $\\mu$m, complemented by $H$-band data. We construct completeness-corrected $K$-band luminosity func"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.23904","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2602.23904/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2602.23904","created_at":"2026-07-10T00:18:43.997546+00:00"},{"alias_kind":"arxiv_version","alias_value":"2602.23904v2","created_at":"2026-07-10T00:18:43.997546+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.23904","created_at":"2026-07-10T00:18:43.997546+00:00"},{"alias_kind":"pith_short_12","alias_value":"3XK4L64Y6D4X","created_at":"2026-07-10T00:18:43.997546+00:00"},{"alias_kind":"pith_short_16","alias_value":"3XK4L64Y6D4XIH2H","created_at":"2026-07-10T00:18:43.997546+00:00"},{"alias_kind":"pith_short_8","alias_value":"3XK4L64Y","created_at":"2026-07-10T00:18:43.997546+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/3XK4L64Y6D4XIH2HTA4WTYUBW4","json":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4.json","graph_json":"https://pith.science/api/pith-number/3XK4L64Y6D4XIH2HTA4WTYUBW4/graph.json","events_json":"https://pith.science/api/pith-number/3XK4L64Y6D4XIH2HTA4WTYUBW4/events.json","paper":"https://pith.science/paper/3XK4L64Y"},"agent_actions":{"view_html":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4","download_json":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4.json","view_paper":"https://pith.science/paper/3XK4L64Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2602.23904&json=true","fetch_graph":"https://pith.science/api/pith-number/3XK4L64Y6D4XIH2HTA4WTYUBW4/graph.json","fetch_events":"https://pith.science/api/pith-number/3XK4L64Y6D4XIH2HTA4WTYUBW4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4/action/storage_attestation","attest_author":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4/action/author_attestation","sign_citation":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4/action/citation_signature","submit_replication":"https://pith.science/pith/3XK4L64Y6D4XIH2HTA4WTYUBW4/action/replication_record"}},"created_at":"2026-07-10T00:18:43.997546+00:00","updated_at":"2026-07-10T00:18:43.997546+00:00"}