{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2LMMGL226JFCBPJRJ4XYE2653G","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":"1799dc9130edc238322982217c0f178bfc96f1056200de7c9103eeed768c2bb1","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-19T18:28:39Z","title_canon_sha256":"fd4b41d8444a2b58e8e93273fe707b44e50d99bd0474bd8ff5f8e15254068692"},"schema_version":"1.0","source":{"id":"1403.4905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4905","created_at":"2026-05-18T01:43:59Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4905v1","created_at":"2026-05-18T01:43:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4905","created_at":"2026-05-18T01:43:59Z"},{"alias_kind":"pith_short_12","alias_value":"2LMMGL226JFC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2LMMGL226JFCBPJR","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2LMMGL22","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:412825a4ef60012848a31ba6e07bc8fbc4678076a0d1c07fb7a679145a858268","target":"graph","created_at":"2026-05-18T01:43:59Z","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":"We report the detection of vertically extended far-ultraviolet (FUV) and near-UV emissions in an edge-on spiral galaxy NGC 891, which we interpret as being due to dust-scattered starlight. Three-dimensional radiative transfer models are used to investigate the content of the extraplanar dust that is required to explain the UV emission. The UV halos are well reproduced by a radiative transfer model with two exponential dust disks, one with a scaleheight of $\\approx$ 0.2 - 0.25 kpc and the other with a scaleheight of $\\approx$ 1.2 - 2.0 kpc. The central face-on optical depth of the geometrically","authors_text":"Adolf N. Witt, Il-Joong Kim, Jong-Ho Shinn, Kwang-Il Seon","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-19T18:28:39Z","title":"Diffuse Extraplanar Dust in NGC 891"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4905","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":"sha256:282e674b692164e98962132639d81eaecc281cff43c3f72500f5aa89b58dfa16","target":"record","created_at":"2026-05-18T01:43:59Z","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":"1799dc9130edc238322982217c0f178bfc96f1056200de7c9103eeed768c2bb1","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-03-19T18:28:39Z","title_canon_sha256":"fd4b41d8444a2b58e8e93273fe707b44e50d99bd0474bd8ff5f8e15254068692"},"schema_version":"1.0","source":{"id":"1403.4905","kind":"arxiv","version":1}},"canonical_sha256":"d2d8c32f5af24a20bd314f2f826bddd98b4e79b9684668b74aa99ad9c9ec1b81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2d8c32f5af24a20bd314f2f826bddd98b4e79b9684668b74aa99ad9c9ec1b81","first_computed_at":"2026-05-18T01:43:59.199227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:59.199227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DwHf/5kn+uF9LThmSz6wFxOXdDNjIgYUI48lC1USsKDhwoHc1r1k8LEY11/0aekJ5e6LUlDk+YWZ4Z735v32CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:59.199850Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:282e674b692164e98962132639d81eaecc281cff43c3f72500f5aa89b58dfa16","sha256:412825a4ef60012848a31ba6e07bc8fbc4678076a0d1c07fb7a679145a858268"],"state_sha256":"c971c234acc858764c22865f1d9410bcd98216c3ef83c9adc7591c1ea72bf130"}