{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:4TEAS2QVB2OA6Z6EA6T2I5M2CJ","short_pith_number":"pith:4TEAS2QV","schema_version":"1.0","canonical_sha256":"e4c8096a150e9c0f67c407a7a4759a12740b21a1d67ebf39b1cef70a7a8cf9d4","source":{"kind":"arxiv","id":"2208.12891","version":1},"attestation_state":"computed","paper":{"title":"On the validity of the spectroscopic age indicators [Y/Mg], [Y/Al], [Y/Si], [Y/Ca], and [Y/Ti] for giant stars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Geraldo Gon\\c{c}alves, Leandro Kerber, Orlando J. Katime Santrich, Yuri Abuchaim","submitted_at":"2022-08-26T23:15:30Z","abstract_excerpt":"The abundance ratios [Y$/$Mg], [Y$/$Al], [Y$/$Si], [Y$/$Ca], and [Y$/$Ti] have been suggested as chemical clocks for solar-metallicity dwarf stars in the field as well as for giant stars in open clusters. To verify this last hypothesis, we derive these abundances ratios of 50 giant stars belonging to seven open clusters. To calculate the abundances, we analyze FEROS spectra assuming the LTE-hypothesis. We confirm that [Y$/$Mg], [Y$/$Al], [Y$/$Si], [Y$/$Ca], and [Y$/$Ti] work as chemical clocks for field dwarf stars at the local region (d $<$ 1 kpc) whereas for the field giants the [Y$/$Mg], [Y"},"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":"2208.12891","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-08-26T23:15:30Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f765a0ce2de2827dba1ffb66b844050acf99f36ee5b09f2641f2418ce7998ec0","abstract_canon_sha256":"10d59665865a25fb27e95ad35ba817a7262d09c198ad4b77c2721aef7b4f9e83"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:52:00.469257Z","signature_b64":"grosVQXQTCDgYMEExiRj9sEYst8YLbdnEnnDBmlpAA7G6AyRcD0eEEc5YfZRTJj0N7CK7a+0y3ftwkH8SMTyCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4c8096a150e9c0f67c407a7a4759a12740b21a1d67ebf39b1cef70a7a8cf9d4","last_reissued_at":"2026-07-05T04:52:00.468812Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:52:00.468812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the validity of the spectroscopic age indicators [Y/Mg], [Y/Al], [Y/Si], [Y/Ca], and [Y/Ti] for giant stars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Geraldo Gon\\c{c}alves, Leandro Kerber, Orlando J. Katime Santrich, Yuri Abuchaim","submitted_at":"2022-08-26T23:15:30Z","abstract_excerpt":"The abundance ratios [Y$/$Mg], [Y$/$Al], [Y$/$Si], [Y$/$Ca], and [Y$/$Ti] have been suggested as chemical clocks for solar-metallicity dwarf stars in the field as well as for giant stars in open clusters. To verify this last hypothesis, we derive these abundances ratios of 50 giant stars belonging to seven open clusters. To calculate the abundances, we analyze FEROS spectra assuming the LTE-hypothesis. We confirm that [Y$/$Mg], [Y$/$Al], [Y$/$Si], [Y$/$Ca], and [Y$/$Ti] work as chemical clocks for field dwarf stars at the local region (d $<$ 1 kpc) whereas for the field giants the [Y$/$Mg], [Y"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.12891","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2208.12891/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":"2208.12891","created_at":"2026-07-05T04:52:00.468869+00:00"},{"alias_kind":"arxiv_version","alias_value":"2208.12891v1","created_at":"2026-07-05T04:52:00.468869+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.12891","created_at":"2026-07-05T04:52:00.468869+00:00"},{"alias_kind":"pith_short_12","alias_value":"4TEAS2QVB2OA","created_at":"2026-07-05T04:52:00.468869+00:00"},{"alias_kind":"pith_short_16","alias_value":"4TEAS2QVB2OA6Z6E","created_at":"2026-07-05T04:52:00.468869+00:00"},{"alias_kind":"pith_short_8","alias_value":"4TEAS2QV","created_at":"2026-07-05T04:52:00.468869+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.09851","citing_title":"Benchmark Brown Dwarf Systems I: Chemical Abundance Analysis of FGK Stars with Wide-Separation Brown Dwarf Companions Using PEPSI","ref_index":265,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ","json":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ.json","graph_json":"https://pith.science/api/pith-number/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/graph.json","events_json":"https://pith.science/api/pith-number/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/events.json","paper":"https://pith.science/paper/4TEAS2QV"},"agent_actions":{"view_html":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ","download_json":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ.json","view_paper":"https://pith.science/paper/4TEAS2QV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2208.12891&json=true","fetch_graph":"https://pith.science/api/pith-number/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/graph.json","fetch_events":"https://pith.science/api/pith-number/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/action/storage_attestation","attest_author":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/action/author_attestation","sign_citation":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/action/citation_signature","submit_replication":"https://pith.science/pith/4TEAS2QVB2OA6Z6EA6T2I5M2CJ/action/replication_record"}},"created_at":"2026-07-05T04:52:00.468869+00:00","updated_at":"2026-07-05T04:52:00.468869+00:00"}