{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:3S2F4OVTRTHUMY7VGZZALZVKZC","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":"2ebd1d8915d98c5834c508737ff9c1d5ebbd0443287085998c8de5878e481c36","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T04:30:34Z","title_canon_sha256":"eab5e7a2ddce72158607418cdf8016e7d397cf1375780d2cd01a75b1691d17bf"},"schema_version":"1.0","source":{"id":"astro-ph/0204171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0204171","created_at":"2026-07-04T16:29:40Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0204171v1","created_at":"2026-07-04T16:29:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0204171","created_at":"2026-07-04T16:29:40Z"},{"alias_kind":"pith_short_12","alias_value":"3S2F4OVTRTHU","created_at":"2026-07-04T16:29:40Z"},{"alias_kind":"pith_short_16","alias_value":"3S2F4OVTRTHUMY7V","created_at":"2026-07-04T16:29:40Z"},{"alias_kind":"pith_short_8","alias_value":"3S2F4OVT","created_at":"2026-07-04T16:29:40Z"}],"graph_snapshots":[{"event_id":"sha256:019bcdd33cbf5dbd0a7c767830903df194eeda9fcdbd96b49e7d4a0792c962b1","target":"graph","created_at":"2026-07-04T16:29:40Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0204171/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate gas metallicity of narrow-line regions in narrow-line Seyfert 1 galaxies (NLS1s) and broad-line ones (BLS1s) in order to examine whether or not there is a difference in the gas metallicity between the two populations of Seyfert 1 galaxies. We apply two methods to study this issue. One is to use the emission-line flux ratio of [N II]6583/H_alpha in combination with some other optical emission-line flux ratios. This method, which has been often applied to Seyfert 2 galaxies, suggests that the gas metallicity of narrow-line regions is indistinguishable or possibly higher in BLS1s t","authors_text":"Takashi Murayama, Tohru Nagao, Yasuhiro Shioya, Yoshiaki Taniguchi (Tohoku University)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T04:30:34Z","title":"Gas Metallicity of Narrow-Line Regions in Narrow-Line Seyfert 1 Galaxies and Broad-Line Seyfert 1 Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0204171","kind":"arxiv","version":1},"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":"sha256:5d3c30817c33088434489b674bf3df202a01251e6e05c7d0d7ccc965edbf3027","target":"record","created_at":"2026-07-04T16:29:40Z","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":"2ebd1d8915d98c5834c508737ff9c1d5ebbd0443287085998c8de5878e481c36","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T04:30:34Z","title_canon_sha256":"eab5e7a2ddce72158607418cdf8016e7d397cf1375780d2cd01a75b1691d17bf"},"schema_version":"1.0","source":{"id":"astro-ph/0204171","kind":"arxiv","version":1}},"canonical_sha256":"dcb45e3ab38ccf4663f5367205e6aac89051a2179a6435c8c85d95d9e6fcb221","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcb45e3ab38ccf4663f5367205e6aac89051a2179a6435c8c85d95d9e6fcb221","first_computed_at":"2026-07-04T16:29:40.860418Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:29:40.860418Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c+uJJDBpQk+Bl/T3EnvD/qFwOWPxgGgaE2ExzOEn2b8MipeqHWFOsGcTBHMEUxZLaD5ayJ0TthoHe++3zpM7Bw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:29:40.860800Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0204171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d3c30817c33088434489b674bf3df202a01251e6e05c7d0d7ccc965edbf3027","sha256:019bcdd33cbf5dbd0a7c767830903df194eeda9fcdbd96b49e7d4a0792c962b1"],"state_sha256":"e656d35cf19f0bbc1ffcf6c6bc0e0eb12b38cce780c66d1174cfc11354b7a7db"}