{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:DMAETX5UWDICSZRDACOGKMDYSG","short_pith_number":"pith:DMAETX5U","schema_version":"1.0","canonical_sha256":"1b0049dfb4b0d0296623009c65307891ae36f83656f81c133f50ce35847b26f8","source":{"kind":"arxiv","id":"1112.6214","version":1},"attestation_state":"computed","paper":{"title":"Testing three derivative methods of stellar population synthesis models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Fenghui Zhang, Jinzhong Liu, Xiaoyu Kang, Yu Zhang, Zhanwen Han","submitted_at":"2011-12-29T01:44:59Z","abstract_excerpt":"The number of methods used to study the properties of galaxies is increased, and testing these methods is very important. Galactic globular clusters (GCs) provide an excellent medium for such test, because they can be considered as simple stellar populations. We present ages and metallicities for 40 Galactic GCs as determined from three publicly available techniques, including colour, Lick-index and spectrum-fitting methods, based on Bruzual & Charlot evolutionary population synthesis (EPS) models. By comparing with the ages obtained from colour-magnitude diagrams (CMDs) and metallicities obta"},"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":"1112.6214","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-12-29T01:44:59Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"da028d94c10582cbc0669b68bd266bb38988907887008f259ba5ed4160483370","abstract_canon_sha256":"4e0e55daa71db89676ffcd999645e3818d2da10a48576426202e38dfb1d2442a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:59.940489Z","signature_b64":"5eyAn5ZRmWH8/tdyyfI7VBkXvKTJfPTsc6Dkk5ULKhSBfFISwRQKuKJF6ZO4RE/o4CNxTiVBOKC4sf69dyyWBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b0049dfb4b0d0296623009c65307891ae36f83656f81c133f50ce35847b26f8","last_reissued_at":"2026-05-18T01:58:59.939914Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:59.939914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Testing three derivative methods of stellar population synthesis models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Fenghui Zhang, Jinzhong Liu, Xiaoyu Kang, Yu Zhang, Zhanwen Han","submitted_at":"2011-12-29T01:44:59Z","abstract_excerpt":"The number of methods used to study the properties of galaxies is increased, and testing these methods is very important. Galactic globular clusters (GCs) provide an excellent medium for such test, because they can be considered as simple stellar populations. We present ages and metallicities for 40 Galactic GCs as determined from three publicly available techniques, including colour, Lick-index and spectrum-fitting methods, based on Bruzual & Charlot evolutionary population synthesis (EPS) models. By comparing with the ages obtained from colour-magnitude diagrams (CMDs) and metallicities obta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.6214","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":"1112.6214","created_at":"2026-05-18T01:58:59.939996+00:00"},{"alias_kind":"arxiv_version","alias_value":"1112.6214v1","created_at":"2026-05-18T01:58:59.939996+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.6214","created_at":"2026-05-18T01:58:59.939996+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/DMAETX5UWDICSZRDACOGKMDYSG","json":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG.json","graph_json":"https://pith.science/api/pith-number/DMAETX5UWDICSZRDACOGKMDYSG/graph.json","events_json":"https://pith.science/api/pith-number/DMAETX5UWDICSZRDACOGKMDYSG/events.json","paper":"https://pith.science/paper/DMAETX5U"},"agent_actions":{"view_html":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG","download_json":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG.json","view_paper":"https://pith.science/paper/DMAETX5U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1112.6214&json=true","fetch_graph":"https://pith.science/api/pith-number/DMAETX5UWDICSZRDACOGKMDYSG/graph.json","fetch_events":"https://pith.science/api/pith-number/DMAETX5UWDICSZRDACOGKMDYSG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG/action/storage_attestation","attest_author":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG/action/author_attestation","sign_citation":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG/action/citation_signature","submit_replication":"https://pith.science/pith/DMAETX5UWDICSZRDACOGKMDYSG/action/replication_record"}},"created_at":"2026-05-18T01:58:59.939996+00:00","updated_at":"2026-05-18T01:58:59.939996+00:00"}