{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:RFYXVCFI3YXRIONCH7SIDSFGPU","short_pith_number":"pith:RFYXVCFI","schema_version":"1.0","canonical_sha256":"89717a88a8de2f1439a23fe481c8a67d2760c15a8338384fd85bfc71730e8443","source":{"kind":"arxiv","id":"1809.03612","version":1},"attestation_state":"computed","paper":{"title":"Testing strong line metallicity diagnostics at z~2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"H. Rhodin, L. Christensen, M. A. Lara-L\\'opez, R. Ca\\~nameras, V. Patr\\'icio","submitted_at":"2018-09-10T21:54:21Z","abstract_excerpt":"High-z galaxy gas-phase metallicities are usually determined through observations of strong optical emission lines with calibrations tied to the local universe. Recent debate has questioned if these calibrations are valid in the high-z universe. We investigate this by analysing a sample of 16 galaxies at z~2 available in the literature, and for which the metallicity can be robustly determined using oxygen auroral lines. The sample spans a redshift range of 1.4 < z < 3.6, has metallicities of 7.4-8.4 in 12+log(O/H) and stellar masses 10^7.5-10^11 Msun. We test commonly used strong line diagnost"},"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":"1809.03612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-10T21:54:21Z","cross_cats_sorted":[],"title_canon_sha256":"6a1f4cbc9c4c532e3c79f9c78807eea1a865caadc63c3d42c9c643339808c6c7","abstract_canon_sha256":"42d36a9faeb264d23bf9ce74119c737e748ca3c7663e1d1988bd77d337c63849"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:47.905053Z","signature_b64":"MTlidDZIBR9cLKP3RnC+bPsBZ2Y567p+oGlETcruPpnbVFVIz9rUkc86GUcr5QV0eDxs0tAVWpOFC3L6wvApCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89717a88a8de2f1439a23fe481c8a67d2760c15a8338384fd85bfc71730e8443","last_reissued_at":"2026-05-18T00:04:47.904311Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:47.904311Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Testing strong line metallicity diagnostics at z~2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"H. Rhodin, L. Christensen, M. A. Lara-L\\'opez, R. Ca\\~nameras, V. Patr\\'icio","submitted_at":"2018-09-10T21:54:21Z","abstract_excerpt":"High-z galaxy gas-phase metallicities are usually determined through observations of strong optical emission lines with calibrations tied to the local universe. Recent debate has questioned if these calibrations are valid in the high-z universe. We investigate this by analysing a sample of 16 galaxies at z~2 available in the literature, and for which the metallicity can be robustly determined using oxygen auroral lines. The sample spans a redshift range of 1.4 < z < 3.6, has metallicities of 7.4-8.4 in 12+log(O/H) and stellar masses 10^7.5-10^11 Msun. We test commonly used strong line diagnost"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.03612","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":"1809.03612","created_at":"2026-05-18T00:04:47.904439+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.03612v1","created_at":"2026-05-18T00:04:47.904439+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.03612","created_at":"2026-05-18T00:04:47.904439+00:00"},{"alias_kind":"pith_short_12","alias_value":"RFYXVCFI3YXR","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_16","alias_value":"RFYXVCFI3YXRIONC","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_8","alias_value":"RFYXVCFI","created_at":"2026-05-18T12:32:50.500415+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/RFYXVCFI3YXRIONCH7SIDSFGPU","json":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU.json","graph_json":"https://pith.science/api/pith-number/RFYXVCFI3YXRIONCH7SIDSFGPU/graph.json","events_json":"https://pith.science/api/pith-number/RFYXVCFI3YXRIONCH7SIDSFGPU/events.json","paper":"https://pith.science/paper/RFYXVCFI"},"agent_actions":{"view_html":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU","download_json":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU.json","view_paper":"https://pith.science/paper/RFYXVCFI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.03612&json=true","fetch_graph":"https://pith.science/api/pith-number/RFYXVCFI3YXRIONCH7SIDSFGPU/graph.json","fetch_events":"https://pith.science/api/pith-number/RFYXVCFI3YXRIONCH7SIDSFGPU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU/action/storage_attestation","attest_author":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU/action/author_attestation","sign_citation":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU/action/citation_signature","submit_replication":"https://pith.science/pith/RFYXVCFI3YXRIONCH7SIDSFGPU/action/replication_record"}},"created_at":"2026-05-18T00:04:47.904439+00:00","updated_at":"2026-05-18T00:04:47.904439+00:00"}