{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:JKYG4NJAIXLDVEFQH2H4APKUGL","short_pith_number":"pith:JKYG4NJA","schema_version":"1.0","canonical_sha256":"4ab06e352045d63a90b03e8fc03d5432d51bf6bc4710e6213c38cbc2e0c0b39c","source":{"kind":"arxiv","id":"2007.09159","version":2},"attestation_state":"computed","paper":{"title":"Constraining Photoionization Models With a Reprojected Optical Diagnostic Diagram","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Renbin Yan, Xihan Ji","submitted_at":"2020-07-17T18:00:10Z","abstract_excerpt":"Optical diagnostic diagrams are powerful tools to separate different ionizing sources in galaxies. However, the model-constraining power of the most widely-used diagrams is very limited and challenging to visualize. In addition, there have always been classification inconsistencies between diagrams based on different line ratios, and ambiguities between regions purely ionized by active galactic nuclei (AGNs) and composite regions. We present a simple reprojection of the 3D line ratio space composed of [N II]$\\lambda 6583$/H$\\alpha$, [S II]$\\lambda \\lambda$6716, 6731/H$\\alpha$, and [O III]$\\lam"},"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":"2007.09159","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-17T18:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"8cf08f2b9e7e5e370252aa27104b487c386f9910dc40b44f1dac89a65c0fab30","abstract_canon_sha256":"11b8df2fa42ce2adfed5203e7922a9bb948958a21037f561decb856d37369ce8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:47:00.036240Z","signature_b64":"itDfxKBAjJifmH2gorBqUZi2wj3GXP3yBsKz/DK/mcfIMj9bYE1VkZRCxTvhhaH2Q+7zZy0jhsf8ur0WblTYAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ab06e352045d63a90b03e8fc03d5432d51bf6bc4710e6213c38cbc2e0c0b39c","last_reissued_at":"2026-07-05T01:47:00.035781Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:47:00.035781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining Photoionization Models With a Reprojected Optical Diagnostic Diagram","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Renbin Yan, Xihan Ji","submitted_at":"2020-07-17T18:00:10Z","abstract_excerpt":"Optical diagnostic diagrams are powerful tools to separate different ionizing sources in galaxies. However, the model-constraining power of the most widely-used diagrams is very limited and challenging to visualize. In addition, there have always been classification inconsistencies between diagrams based on different line ratios, and ambiguities between regions purely ionized by active galactic nuclei (AGNs) and composite regions. We present a simple reprojection of the 3D line ratio space composed of [N II]$\\lambda 6583$/H$\\alpha$, [S II]$\\lambda \\lambda$6716, 6731/H$\\alpha$, and [O III]$\\lam"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.09159","kind":"arxiv","version":2},"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/2007.09159/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":"2007.09159","created_at":"2026-07-05T01:47:00.035837+00:00"},{"alias_kind":"arxiv_version","alias_value":"2007.09159v2","created_at":"2026-07-05T01:47:00.035837+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.09159","created_at":"2026-07-05T01:47:00.035837+00:00"},{"alias_kind":"pith_short_12","alias_value":"JKYG4NJAIXLD","created_at":"2026-07-05T01:47:00.035837+00:00"},{"alias_kind":"pith_short_16","alias_value":"JKYG4NJAIXLDVEFQ","created_at":"2026-07-05T01:47:00.035837+00:00"},{"alias_kind":"pith_short_8","alias_value":"JKYG4NJA","created_at":"2026-07-05T01:47:00.035837+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.10573","citing_title":"Mapping Dust Attenuation at Kiloparsec Scales. III. The 2175\\AA\\ Bump","ref_index":100,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL","json":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL.json","graph_json":"https://pith.science/api/pith-number/JKYG4NJAIXLDVEFQH2H4APKUGL/graph.json","events_json":"https://pith.science/api/pith-number/JKYG4NJAIXLDVEFQH2H4APKUGL/events.json","paper":"https://pith.science/paper/JKYG4NJA"},"agent_actions":{"view_html":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL","download_json":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL.json","view_paper":"https://pith.science/paper/JKYG4NJA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2007.09159&json=true","fetch_graph":"https://pith.science/api/pith-number/JKYG4NJAIXLDVEFQH2H4APKUGL/graph.json","fetch_events":"https://pith.science/api/pith-number/JKYG4NJAIXLDVEFQH2H4APKUGL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL/action/storage_attestation","attest_author":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL/action/author_attestation","sign_citation":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL/action/citation_signature","submit_replication":"https://pith.science/pith/JKYG4NJAIXLDVEFQH2H4APKUGL/action/replication_record"}},"created_at":"2026-07-05T01:47:00.035837+00:00","updated_at":"2026-07-05T01:47:00.035837+00:00"}