{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OKYHKGHJK3WLBUCIDIA22HZKNW","short_pith_number":"pith:OKYHKGHJ","canonical_record":{"source":{"id":"1211.0223","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-25T20:15:39Z","cross_cats_sorted":[],"title_canon_sha256":"4492f554932241c5d3954658ecbafff848311c5d8a7f7fa29b4cd0f1496ca708","abstract_canon_sha256":"32701bb40cb9502f0942157e80f448fc2d24c669402d89d83db2ef89bf7e1bd2"},"schema_version":"1.0"},"canonical_sha256":"72b07518e956ecb0d0481a01ad1f2a6d8c7896366cd400223b05a991248dde72","source":{"kind":"arxiv","id":"1211.0223","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0223","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0223v1","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0223","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"pith_short_12","alias_value":"OKYHKGHJK3WL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OKYHKGHJK3WLBUCI","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OKYHKGHJ","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OKYHKGHJK3WLBUCIDIA22HZKNW","target":"record","payload":{"canonical_record":{"source":{"id":"1211.0223","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-25T20:15:39Z","cross_cats_sorted":[],"title_canon_sha256":"4492f554932241c5d3954658ecbafff848311c5d8a7f7fa29b4cd0f1496ca708","abstract_canon_sha256":"32701bb40cb9502f0942157e80f448fc2d24c669402d89d83db2ef89bf7e1bd2"},"schema_version":"1.0"},"canonical_sha256":"72b07518e956ecb0d0481a01ad1f2a6d8c7896366cd400223b05a991248dde72","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:42.740817Z","signature_b64":"UDkcjAfuEqCV6W9X/dCoB1LHbRkgRIims8FEVW4IWbvosvV4DIH9bx22omFLiXMz2Tr2Ndsa6ZJs21n120GjBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72b07518e956ecb0d0481a01ad1f2a6d8c7896366cd400223b05a991248dde72","last_reissued_at":"2026-05-18T03:41:42.740023Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:42.740023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.0223","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":"2026-05-18T03:41:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z7SvEFT0IoidAciRpIdCiLYxJgnEF2fT93lpu+M8Etu6TUPM0qlF9DrUw2of2RqtqMlSfY+uBpqxGU58W1gtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:15:47.119725Z"},"content_sha256":"f530f03143ac005b40cb4c0b26d290a7daeef7c2db1326532d91ce70b44fdbb0","schema_version":"1.0","event_id":"sha256:f530f03143ac005b40cb4c0b26d290a7daeef7c2db1326532d91ce70b44fdbb0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OKYHKGHJK3WLBUCIDIA22HZKNW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A New Grid of Synthetic Spectra for the Analysis of [WC]-type Central Stars of Planetary Nebulae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Graziela R. Keller, James E. Herald, Luciana Bianchi, Ralph C. Bohlin, Walter J. Maciel","submitted_at":"2012-10-25T20:15:39Z","abstract_excerpt":"We present a comprehensive grid of synthetic stellar-atmosphere spectra, suitable for the analysis of high resolution spectra of hydrogen-deficient post-Asymptotic Giant Branch (post-AGB) objects hotter than 50000 K, migrating along the constant luminosity branch of the Hertzsprung-Russell diagram (HRD). The grid was calculated with CMFGEN, a state-of-the-art stellar atmosphere code that properly treats the stellar winds, accounting for expanding atmospheres in non-LTE, line blanketing, soft X-rays, and wind clumping. We include many ionic species that have been previously neglected. Our unifo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0223","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":"2026-05-18T03:41:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+vFRV9Kh5LKYGTAVeOEuxgV2ME/GZk5mx3Rzci1QD0md26jz7InVMVVTmcE9b4lYfUwYpF0p98QWaRUCf5HbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:15:47.120699Z"},"content_sha256":"8ad1ef7885d94ca6ce5770d15d31bc9dc837526321aabb4b261504e4beeb7bf2","schema_version":"1.0","event_id":"sha256:8ad1ef7885d94ca6ce5770d15d31bc9dc837526321aabb4b261504e4beeb7bf2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/bundle.json","state_url":"https://pith.science/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/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":"2026-05-31T19:15:47Z","links":{"resolver":"https://pith.science/pith/OKYHKGHJK3WLBUCIDIA22HZKNW","bundle":"https://pith.science/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/bundle.json","state":"https://pith.science/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OKYHKGHJK3WLBUCIDIA22HZKNW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OKYHKGHJK3WLBUCIDIA22HZKNW","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":"32701bb40cb9502f0942157e80f448fc2d24c669402d89d83db2ef89bf7e1bd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-25T20:15:39Z","title_canon_sha256":"4492f554932241c5d3954658ecbafff848311c5d8a7f7fa29b4cd0f1496ca708"},"schema_version":"1.0","source":{"id":"1211.0223","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0223","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0223v1","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0223","created_at":"2026-05-18T03:41:42Z"},{"alias_kind":"pith_short_12","alias_value":"OKYHKGHJK3WL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OKYHKGHJK3WLBUCI","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OKYHKGHJ","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:8ad1ef7885d94ca6ce5770d15d31bc9dc837526321aabb4b261504e4beeb7bf2","target":"graph","created_at":"2026-05-18T03:41:42Z","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 present a comprehensive grid of synthetic stellar-atmosphere spectra, suitable for the analysis of high resolution spectra of hydrogen-deficient post-Asymptotic Giant Branch (post-AGB) objects hotter than 50000 K, migrating along the constant luminosity branch of the Hertzsprung-Russell diagram (HRD). The grid was calculated with CMFGEN, a state-of-the-art stellar atmosphere code that properly treats the stellar winds, accounting for expanding atmospheres in non-LTE, line blanketing, soft X-rays, and wind clumping. We include many ionic species that have been previously neglected. Our unifo","authors_text":"Graziela R. Keller, James E. Herald, Luciana Bianchi, Ralph C. Bohlin, Walter J. Maciel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-25T20:15:39Z","title":"A New Grid of Synthetic Spectra for the Analysis of [WC]-type Central Stars of Planetary Nebulae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0223","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:f530f03143ac005b40cb4c0b26d290a7daeef7c2db1326532d91ce70b44fdbb0","target":"record","created_at":"2026-05-18T03:41:42Z","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":"32701bb40cb9502f0942157e80f448fc2d24c669402d89d83db2ef89bf7e1bd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-25T20:15:39Z","title_canon_sha256":"4492f554932241c5d3954658ecbafff848311c5d8a7f7fa29b4cd0f1496ca708"},"schema_version":"1.0","source":{"id":"1211.0223","kind":"arxiv","version":1}},"canonical_sha256":"72b07518e956ecb0d0481a01ad1f2a6d8c7896366cd400223b05a991248dde72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72b07518e956ecb0d0481a01ad1f2a6d8c7896366cd400223b05a991248dde72","first_computed_at":"2026-05-18T03:41:42.740023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:42.740023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UDkcjAfuEqCV6W9X/dCoB1LHbRkgRIims8FEVW4IWbvosvV4DIH9bx22omFLiXMz2Tr2Ndsa6ZJs21n120GjBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:42.740817Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.0223","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f530f03143ac005b40cb4c0b26d290a7daeef7c2db1326532d91ce70b44fdbb0","sha256:8ad1ef7885d94ca6ce5770d15d31bc9dc837526321aabb4b261504e4beeb7bf2"],"state_sha256":"45b7f48473399a06cc72dc57c58651bdf44b63eb2986cdbf6a1816809a623606"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kr6Q0f8nKv8Byq9XOv14OgcDnCiz2F/hSssNCMPfaFYtgESX08zwXbT6RRfmhbRrAZSBYaKz9pDTM6woxycfDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T19:15:47.126264Z","bundle_sha256":"0999f3aeec000c71fc9337fa4634faeb0438c891e67cc3b787bf84d2f94fb131"}}