{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:A3X74ZUY2VCZWNA5DU3KV24MEP","short_pith_number":"pith:A3X74ZUY","schema_version":"1.0","canonical_sha256":"06effe6698d5459b341d1d36aaeb8c23e6bd623b862761c9d2b681b23968c26b","source":{"kind":"arxiv","id":"1105.4440","version":1},"attestation_state":"computed","paper":{"title":"Three new bricks in the wall: Berkeley 23, Berkeley 31, and King 8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) INAF-Osservatorio Astronomico di Bologna, (3) ESO, Angela Bragaglia (2), Garching, Germany), Giacomo Beccari (3), Italy, Michele Cignoni (1, Monica Tosi (2) ((1) Dipartimento di Astronomia, Universita' di Bologna","submitted_at":"2011-05-23T09:11:13Z","abstract_excerpt":"A comprehensive census of Galactic open cluster properties places unique constraints on the Galactic disc structure and evolution. In this framework we investigate the evolutionary status of three poorly-studied open clusters, Berkeley 31, Berkeley 23 and King 8, all located in the Galactic anti-centre direction. To this aim, we make use of deep LBT observations, reaching more than 6 mag below the main sequence Turn- Off. To determine the cluster parameters, namely age, metallicity, distance, reddening and binary fraction, we compare the observational colour-magnitude diagrams (CMDs) with a li"},"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":"1105.4440","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-23T09:11:13Z","cross_cats_sorted":[],"title_canon_sha256":"ee654749e3cd79b67098892950b3eb27c347df9d1c7050a4c9da8eb49a01c8eb","abstract_canon_sha256":"b72572c7017ae7da54669a3bb5fb1cf272bc49e5d75d3c5fa9340e6111ae6f21"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:52.732058Z","signature_b64":"6AoruAoYWnIXbaSFtQR5O0KcJDZtxiaOD2THO3az3SM2TRcx5XVNj41vl5zwfOW2e0PHe6mZD2AR+SvqVjgsBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06effe6698d5459b341d1d36aaeb8c23e6bd623b862761c9d2b681b23968c26b","last_reissued_at":"2026-05-18T02:01:52.731284Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:52.731284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Three new bricks in the wall: Berkeley 23, Berkeley 31, and King 8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) INAF-Osservatorio Astronomico di Bologna, (3) ESO, Angela Bragaglia (2), Garching, Germany), Giacomo Beccari (3), Italy, Michele Cignoni (1, Monica Tosi (2) ((1) Dipartimento di Astronomia, Universita' di Bologna","submitted_at":"2011-05-23T09:11:13Z","abstract_excerpt":"A comprehensive census of Galactic open cluster properties places unique constraints on the Galactic disc structure and evolution. In this framework we investigate the evolutionary status of three poorly-studied open clusters, Berkeley 31, Berkeley 23 and King 8, all located in the Galactic anti-centre direction. To this aim, we make use of deep LBT observations, reaching more than 6 mag below the main sequence Turn- Off. To determine the cluster parameters, namely age, metallicity, distance, reddening and binary fraction, we compare the observational colour-magnitude diagrams (CMDs) with a li"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.4440","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":"1105.4440","created_at":"2026-05-18T02:01:52.731453+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.4440v1","created_at":"2026-05-18T02:01:52.731453+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.4440","created_at":"2026-05-18T02:01:52.731453+00:00"},{"alias_kind":"pith_short_12","alias_value":"A3X74ZUY2VCZ","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_16","alias_value":"A3X74ZUY2VCZWNA5","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_8","alias_value":"A3X74ZUY","created_at":"2026-05-18T12:26:24.575870+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/A3X74ZUY2VCZWNA5DU3KV24MEP","json":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP.json","graph_json":"https://pith.science/api/pith-number/A3X74ZUY2VCZWNA5DU3KV24MEP/graph.json","events_json":"https://pith.science/api/pith-number/A3X74ZUY2VCZWNA5DU3KV24MEP/events.json","paper":"https://pith.science/paper/A3X74ZUY"},"agent_actions":{"view_html":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP","download_json":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP.json","view_paper":"https://pith.science/paper/A3X74ZUY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.4440&json=true","fetch_graph":"https://pith.science/api/pith-number/A3X74ZUY2VCZWNA5DU3KV24MEP/graph.json","fetch_events":"https://pith.science/api/pith-number/A3X74ZUY2VCZWNA5DU3KV24MEP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP/action/storage_attestation","attest_author":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP/action/author_attestation","sign_citation":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP/action/citation_signature","submit_replication":"https://pith.science/pith/A3X74ZUY2VCZWNA5DU3KV24MEP/action/replication_record"}},"created_at":"2026-05-18T02:01:52.731453+00:00","updated_at":"2026-05-18T02:01:52.731453+00:00"}