{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:RCBTU26J33V3T2O6I4BYP4GFYC","short_pith_number":"pith:RCBTU26J","canonical_record":{"source":{"id":"1001.4035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-22T16:17:29Z","cross_cats_sorted":[],"title_canon_sha256":"6802290bbffbeec92823190983f44cb17a6340b2c3b667c4b79ded4bcc4e117f","abstract_canon_sha256":"ab83dde708eab4e7fa7ab7069a2b93262e9a463d1c3f7aff407e37aa04c5ec2b"},"schema_version":"1.0"},"canonical_sha256":"88833a6bc9deebb9e9de470387f0c5c0aaa10605c3c3842e13cb4db8fe42240f","source":{"kind":"arxiv","id":"1001.4035","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4035","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4035v1","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4035","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"pith_short_12","alias_value":"RCBTU26J33V3","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RCBTU26J33V3T2O6","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RCBTU26J","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:RCBTU26J33V3T2O6I4BYP4GFYC","target":"record","payload":{"canonical_record":{"source":{"id":"1001.4035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-22T16:17:29Z","cross_cats_sorted":[],"title_canon_sha256":"6802290bbffbeec92823190983f44cb17a6340b2c3b667c4b79ded4bcc4e117f","abstract_canon_sha256":"ab83dde708eab4e7fa7ab7069a2b93262e9a463d1c3f7aff407e37aa04c5ec2b"},"schema_version":"1.0"},"canonical_sha256":"88833a6bc9deebb9e9de470387f0c5c0aaa10605c3c3842e13cb4db8fe42240f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:31.092168Z","signature_b64":"w4RXGzZAEzpAJyfXjCEO0mbU8ExqzFuuVQ224jfeFcKtEFG2I48yHje40BETbFK7fZ1syyMkGEWWNpvzCz1OBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88833a6bc9deebb9e9de470387f0c5c0aaa10605c3c3842e13cb4db8fe42240f","last_reissued_at":"2026-05-18T02:09:31.091123Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:31.091123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.4035","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:09:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JwP9FEB9yb84ICQ15wSFYtc4XIzBXjcgksY9hfW7RW/phKOwccs0jYRqyYz+PfoJ/NpYsjPeZjRMxPWKQmTsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:39:27.501169Z"},"content_sha256":"783f2c5c884359ee1f6c39ad8159edc68a616af3601b592edc6d252a15e8bbfa","schema_version":"1.0","event_id":"sha256:783f2c5c884359ee1f6c39ad8159edc68a616af3601b592edc6d252a15e8bbfa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:RCBTU26J33V3T2O6I4BYP4GFYC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Testing PDR models against ISO fine structure line data for extragalactic sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"J. A. Yates, M. J. Barlow, M. Vasta, S. Viti, T. A. Bell","submitted_at":"2010-01-22T16:17:29Z","abstract_excerpt":"Far-infrared [C ii] 158 micron, [O i] 145 micron and [O i] 63 micron fine structure emission line fluxes were measured from archival Infrared Space Observatory Long Wavelength Spectrometer spectra of 46 extragalactic sources, with 28 sources providing detections in all three lines. For 12 of the sources, the contribution to the [C ii] 158 micron line flux from H ii regions could be estimated from their detected [N ii] 122 micron line fluxes. The measured [C ii]/[O i] and [O i] 63/145 micron line flux ratios were compared with those from a grid of PDR models previously computed using the UCL PD"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4035","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:09:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uRU1v1XMCjxbBArkMqxLisFXaWTOSsTX8gYyP/VGlzfTAGDHryBR9gf3yugXTCICEsRXGUg5B0ZoZotVvkk1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:39:27.501742Z"},"content_sha256":"7d79e8c5578f2d1bff6fe1f4a412e0b10a9d454a5f0a86e17a983c8053e1b0e8","schema_version":"1.0","event_id":"sha256:7d79e8c5578f2d1bff6fe1f4a412e0b10a9d454a5f0a86e17a983c8053e1b0e8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RCBTU26J33V3T2O6I4BYP4GFYC/bundle.json","state_url":"https://pith.science/pith/RCBTU26J33V3T2O6I4BYP4GFYC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RCBTU26J33V3T2O6I4BYP4GFYC/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T07:39:27Z","links":{"resolver":"https://pith.science/pith/RCBTU26J33V3T2O6I4BYP4GFYC","bundle":"https://pith.science/pith/RCBTU26J33V3T2O6I4BYP4GFYC/bundle.json","state":"https://pith.science/pith/RCBTU26J33V3T2O6I4BYP4GFYC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RCBTU26J33V3T2O6I4BYP4GFYC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:RCBTU26J33V3T2O6I4BYP4GFYC","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":"ab83dde708eab4e7fa7ab7069a2b93262e9a463d1c3f7aff407e37aa04c5ec2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-22T16:17:29Z","title_canon_sha256":"6802290bbffbeec92823190983f44cb17a6340b2c3b667c4b79ded4bcc4e117f"},"schema_version":"1.0","source":{"id":"1001.4035","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.4035","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"arxiv_version","alias_value":"1001.4035v1","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.4035","created_at":"2026-05-18T02:09:31Z"},{"alias_kind":"pith_short_12","alias_value":"RCBTU26J33V3","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"RCBTU26J33V3T2O6","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"RCBTU26J","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:7d79e8c5578f2d1bff6fe1f4a412e0b10a9d454a5f0a86e17a983c8053e1b0e8","target":"graph","created_at":"2026-05-18T02:09:31Z","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":"Far-infrared [C ii] 158 micron, [O i] 145 micron and [O i] 63 micron fine structure emission line fluxes were measured from archival Infrared Space Observatory Long Wavelength Spectrometer spectra of 46 extragalactic sources, with 28 sources providing detections in all three lines. For 12 of the sources, the contribution to the [C ii] 158 micron line flux from H ii regions could be estimated from their detected [N ii] 122 micron line fluxes. The measured [C ii]/[O i] and [O i] 63/145 micron line flux ratios were compared with those from a grid of PDR models previously computed using the UCL PD","authors_text":"J. A. Yates, M. J. Barlow, M. Vasta, S. Viti, T. A. Bell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-22T16:17:29Z","title":"Testing PDR models against ISO fine structure line data for extragalactic sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.4035","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":"sha256:783f2c5c884359ee1f6c39ad8159edc68a616af3601b592edc6d252a15e8bbfa","target":"record","created_at":"2026-05-18T02:09:31Z","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":"ab83dde708eab4e7fa7ab7069a2b93262e9a463d1c3f7aff407e37aa04c5ec2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-22T16:17:29Z","title_canon_sha256":"6802290bbffbeec92823190983f44cb17a6340b2c3b667c4b79ded4bcc4e117f"},"schema_version":"1.0","source":{"id":"1001.4035","kind":"arxiv","version":1}},"canonical_sha256":"88833a6bc9deebb9e9de470387f0c5c0aaa10605c3c3842e13cb4db8fe42240f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88833a6bc9deebb9e9de470387f0c5c0aaa10605c3c3842e13cb4db8fe42240f","first_computed_at":"2026-05-18T02:09:31.091123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:31.091123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w4RXGzZAEzpAJyfXjCEO0mbU8ExqzFuuVQ224jfeFcKtEFG2I48yHje40BETbFK7fZ1syyMkGEWWNpvzCz1OBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:31.092168Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.4035","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:783f2c5c884359ee1f6c39ad8159edc68a616af3601b592edc6d252a15e8bbfa","sha256:7d79e8c5578f2d1bff6fe1f4a412e0b10a9d454a5f0a86e17a983c8053e1b0e8"],"state_sha256":"237bd819a76ad08a514fcd0e521c46bf2129a1d875b14639ee2017da5d7952dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l8Kro0DlAIra7XTLFfuvEPC8YmW+9ShwrkFCadBmDU04cSSGVNr65m5v6q3hLNAtrDcaRQt1RWa246GEEE+/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:39:27.504396Z","bundle_sha256":"686c6cfd060e545947ad68cbb63789859e7e5822d2f61941be14ee9c8af3c4a4"}}