{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:N4A2LNYK44YGFW5AYV6GSJICEP","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"444daecdc4b563d3c30ef90b62fe779ae4fdb51c7dde5c57b2e5789825d4115d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-04-15T14:44:11Z","title_canon_sha256":"e407819cfb83e3373d6143eb4fe9cd1107761894b936434984ef7298cc2a12c4"},"schema_version":"1.0","source":{"id":"1404.3936","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3936","created_at":"2026-05-18T02:39:16Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3936v2","created_at":"2026-05-18T02:39:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3936","created_at":"2026-05-18T02:39:16Z"},{"alias_kind":"pith_short_12","alias_value":"N4A2LNYK44YG","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"N4A2LNYK44YGFW5A","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"N4A2LNYK","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:9ff187ee53b3b9b05c756c8605c1a7104352149d0fb17a62350a680f990d3cbe","target":"graph","created_at":"2026-05-18T02:39:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The derivation of abundances in gaseous nebulae ionised by massive stars using optical collisionally excited emission lines is studied in this work comparing the direct or $T_e$ method with updated grids of photoionisation models covering a wide range of input conditions of O/H and N/O abundances and ionisation parameter. The abundances in a large sample of compiled objects with at least one auroral line are re-derived and later compared with the $\\chi^2$ weighted-mean abundances from the models. The agreement between the abundances using the two methods both for O/H and N/O is excellent with ","authors_text":"Enrique P\\'erez-Montero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-04-15T14:44:11Z","title":"Deriving model-based T$_e$-consistent chemical abundances in ionised gaseous nebulae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3936","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b0890b112dddfac1c820c79ac4bc86c6417539be81efe5386c1872917ca30515","target":"record","created_at":"2026-05-18T02:39:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"444daecdc4b563d3c30ef90b62fe779ae4fdb51c7dde5c57b2e5789825d4115d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-04-15T14:44:11Z","title_canon_sha256":"e407819cfb83e3373d6143eb4fe9cd1107761894b936434984ef7298cc2a12c4"},"schema_version":"1.0","source":{"id":"1404.3936","kind":"arxiv","version":2}},"canonical_sha256":"6f01a5b70ae73062dba0c57c69250223c3d11bdec0561998dedf2e1c0489a82f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f01a5b70ae73062dba0c57c69250223c3d11bdec0561998dedf2e1c0489a82f","first_computed_at":"2026-05-18T02:39:16.429197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:16.429197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MyLg+xltZ/73YgN5+wuRotM2zZDQW3k7FGIcGczAmCPBil5oVK5yXB7TTiMwjzwDD/0QSqw7VpORoGpjBaRnAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:16.429834Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.3936","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0890b112dddfac1c820c79ac4bc86c6417539be81efe5386c1872917ca30515","sha256:9ff187ee53b3b9b05c756c8605c1a7104352149d0fb17a62350a680f990d3cbe"],"state_sha256":"9f90415dcb2a54af9042ee78c4932c5f14a799a35b3c249730a64cd15bbe2a5c"}