{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DI4IQ6L4T4ZN2LZHHW5MPUISAN","short_pith_number":"pith:DI4IQ6L4","schema_version":"1.0","canonical_sha256":"1a3888797c9f32dd2f273dbac7d112035438cee12c043690adaacbccbc889091","source":{"kind":"arxiv","id":"1804.01975","version":1},"attestation_state":"computed","paper":{"title":"Chemical composition of giant stars in the open cluster IC 4756","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Arnas Drazdauskas, Gra\\v{z}ina Tautvai\\v{s}ien\\.e, Rodolfo Smiljanic, Vilius Bagdonas, Yuriy Chorniy","submitted_at":"2018-04-05T17:53:23Z","abstract_excerpt":"Context: Homogeneous investigations of red giant stars in open clusters contribute to studies of internal evolutionary mixing processes inside stars, which are reflected in abundances of mixing-sensitive chemical elements like carbon, nitrogen, and sodium, while alpha- and neutron-capture element abundances are useful in tracing the Galactic chemical evolution. Aims: The main aim of this study is a comprehensive chemical analysis of red giant stars in the open cluster IC 4756, including determinations of 12C/13C and C/N abundance ratios, and comparisons of the results with theoretical models o"},"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":"1804.01975","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-05T17:53:23Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"d29fc9a325e7c296ffeadd442a5882f0e52d4990db8608a8fb70f5157e16726b","abstract_canon_sha256":"c1b157589fa3f7e9c67938fe52a1ee7c5935cd25568663cf722bba5b195f1ee0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:42.669504Z","signature_b64":"KbiUZ/eD468ztNzIe/VtEm7XwQgDagUVA86q7XRcRkOQ3ot95Yy/ZsyMoLhhbQ2jUYyphh4wdv0ORE+JkGOzCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a3888797c9f32dd2f273dbac7d112035438cee12c043690adaacbccbc889091","last_reissued_at":"2026-05-18T00:08:42.668739Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:42.668739Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chemical composition of giant stars in the open cluster IC 4756","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Arnas Drazdauskas, Gra\\v{z}ina Tautvai\\v{s}ien\\.e, Rodolfo Smiljanic, Vilius Bagdonas, Yuriy Chorniy","submitted_at":"2018-04-05T17:53:23Z","abstract_excerpt":"Context: Homogeneous investigations of red giant stars in open clusters contribute to studies of internal evolutionary mixing processes inside stars, which are reflected in abundances of mixing-sensitive chemical elements like carbon, nitrogen, and sodium, while alpha- and neutron-capture element abundances are useful in tracing the Galactic chemical evolution. Aims: The main aim of this study is a comprehensive chemical analysis of red giant stars in the open cluster IC 4756, including determinations of 12C/13C and C/N abundance ratios, and comparisons of the results with theoretical models o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.01975","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":"1804.01975","created_at":"2026-05-18T00:08:42.668879+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.01975v1","created_at":"2026-05-18T00:08:42.668879+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.01975","created_at":"2026-05-18T00:08:42.668879+00:00"},{"alias_kind":"pith_short_12","alias_value":"DI4IQ6L4T4ZN","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DI4IQ6L4T4ZN2LZH","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DI4IQ6L4","created_at":"2026-05-18T12:32:19.392346+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/DI4IQ6L4T4ZN2LZHHW5MPUISAN","json":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN.json","graph_json":"https://pith.science/api/pith-number/DI4IQ6L4T4ZN2LZHHW5MPUISAN/graph.json","events_json":"https://pith.science/api/pith-number/DI4IQ6L4T4ZN2LZHHW5MPUISAN/events.json","paper":"https://pith.science/paper/DI4IQ6L4"},"agent_actions":{"view_html":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN","download_json":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN.json","view_paper":"https://pith.science/paper/DI4IQ6L4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.01975&json=true","fetch_graph":"https://pith.science/api/pith-number/DI4IQ6L4T4ZN2LZHHW5MPUISAN/graph.json","fetch_events":"https://pith.science/api/pith-number/DI4IQ6L4T4ZN2LZHHW5MPUISAN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN/action/storage_attestation","attest_author":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN/action/author_attestation","sign_citation":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN/action/citation_signature","submit_replication":"https://pith.science/pith/DI4IQ6L4T4ZN2LZHHW5MPUISAN/action/replication_record"}},"created_at":"2026-05-18T00:08:42.668879+00:00","updated_at":"2026-05-18T00:08:42.668879+00:00"}