{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZAZEY66JWYBOHVHOXWFYI663PS","short_pith_number":"pith:ZAZEY66J","canonical_record":{"source":{"id":"1401.2875","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-13T15:39:29Z","cross_cats_sorted":[],"title_canon_sha256":"a1dd55c6c6d736e3f6b010d2b707f0576129685eef3f87d3fac962bb312e3893","abstract_canon_sha256":"5797fb6d91923e059818f1f78aa313c29b73522f0b47b192acf2594bdb29aeaf"},"schema_version":"1.0"},"canonical_sha256":"c8324c7bc9b602e3d4eebd8b847bdb7ca9a59fe13a1e4bcd3c38b18179ec38d3","source":{"kind":"arxiv","id":"1401.2875","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.2875","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"arxiv_version","alias_value":"1401.2875v1","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.2875","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"pith_short_12","alias_value":"ZAZEY66JWYBO","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZAZEY66JWYBOHVHO","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZAZEY66J","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZAZEY66JWYBOHVHOXWFYI663PS","target":"record","payload":{"canonical_record":{"source":{"id":"1401.2875","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-13T15:39:29Z","cross_cats_sorted":[],"title_canon_sha256":"a1dd55c6c6d736e3f6b010d2b707f0576129685eef3f87d3fac962bb312e3893","abstract_canon_sha256":"5797fb6d91923e059818f1f78aa313c29b73522f0b47b192acf2594bdb29aeaf"},"schema_version":"1.0"},"canonical_sha256":"c8324c7bc9b602e3d4eebd8b847bdb7ca9a59fe13a1e4bcd3c38b18179ec38d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:02:31.630169Z","signature_b64":"qXgq2/keIS307fMV0BdwOL1QvrY3UwK+x8n9jmrjixlK4DBYcTgr4aPMKDmeyqfLgWZRw47q387mtpfSPhdZDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8324c7bc9b602e3d4eebd8b847bdb7ca9a59fe13a1e4bcd3c38b18179ec38d3","last_reissued_at":"2026-05-18T03:02:31.629325Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:02:31.629325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.2875","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":"2026-05-18T03:02:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AkJFg6eOX6P1qM5Q3REOGVZARsfcxR6LsGaIDxdaDoKlEjYVhmrFRhCcbNSX0NCRJdGdHfc79iYsXgmN3E3xCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:37:32.891901Z"},"content_sha256":"bf39f005e4761e661f5af49e0168e93f70c7a8d01811fa175a3f2892fa92f687","schema_version":"1.0","event_id":"sha256:bf39f005e4761e661f5af49e0168e93f70c7a8d01811fa175a3f2892fa92f687"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZAZEY66JWYBOHVHOXWFYI663PS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Epoch-dependent absorption line profile variability in lambda Cep","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C.A Flores, E. Gosset, G. Rauw, J.M. Uuh-Sonda, L. Mahy, M. Palate, P. Eenens","submitted_at":"2014-01-13T15:39:29Z","abstract_excerpt":"We present the analysis of a multi-epoch spectroscopic monitoring campaign of the O6Ief star lambda Cep. Previous observations reported the existence of two modes of non-radial pulsations in this star. Our data reveal a much more complex situation. The frequency content of the power spectrum considerably changes from one epoch to the other. We find no stable frequency that can unambiguously be attributed to pulsations. The epoch-dependence of the frequencies and variability patterns are similar to what is seen in the wind emission lines of this and other Oef stars, suggesting that both phenome"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.2875","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":"2026-05-18T03:02:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KDyPYAJeQ4lv/KDcoVQ6TP/gNjMZ4YCWENPVPqtCa/EZKCGcXC/vVPfAhzuaP5zs/xprhVkFxgVXvL69drceAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:37:32.892249Z"},"content_sha256":"4640daf67b16647c41f8a9cada72db102b1592d139dca251e52ca169d71b954d","schema_version":"1.0","event_id":"sha256:4640daf67b16647c41f8a9cada72db102b1592d139dca251e52ca169d71b954d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZAZEY66JWYBOHVHOXWFYI663PS/bundle.json","state_url":"https://pith.science/pith/ZAZEY66JWYBOHVHOXWFYI663PS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZAZEY66JWYBOHVHOXWFYI663PS/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":"2026-05-28T11:37:32Z","links":{"resolver":"https://pith.science/pith/ZAZEY66JWYBOHVHOXWFYI663PS","bundle":"https://pith.science/pith/ZAZEY66JWYBOHVHOXWFYI663PS/bundle.json","state":"https://pith.science/pith/ZAZEY66JWYBOHVHOXWFYI663PS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZAZEY66JWYBOHVHOXWFYI663PS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZAZEY66JWYBOHVHOXWFYI663PS","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":"5797fb6d91923e059818f1f78aa313c29b73522f0b47b192acf2594bdb29aeaf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-13T15:39:29Z","title_canon_sha256":"a1dd55c6c6d736e3f6b010d2b707f0576129685eef3f87d3fac962bb312e3893"},"schema_version":"1.0","source":{"id":"1401.2875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.2875","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"arxiv_version","alias_value":"1401.2875v1","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.2875","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"pith_short_12","alias_value":"ZAZEY66JWYBO","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZAZEY66JWYBOHVHO","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZAZEY66J","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:4640daf67b16647c41f8a9cada72db102b1592d139dca251e52ca169d71b954d","target":"graph","created_at":"2026-05-18T03:02:31Z","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":"We present the analysis of a multi-epoch spectroscopic monitoring campaign of the O6Ief star lambda Cep. Previous observations reported the existence of two modes of non-radial pulsations in this star. Our data reveal a much more complex situation. The frequency content of the power spectrum considerably changes from one epoch to the other. We find no stable frequency that can unambiguously be attributed to pulsations. The epoch-dependence of the frequencies and variability patterns are similar to what is seen in the wind emission lines of this and other Oef stars, suggesting that both phenome","authors_text":"C.A Flores, E. Gosset, G. Rauw, J.M. Uuh-Sonda, L. Mahy, M. Palate, P. Eenens","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-13T15:39:29Z","title":"Epoch-dependent absorption line profile variability in lambda Cep"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.2875","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:bf39f005e4761e661f5af49e0168e93f70c7a8d01811fa175a3f2892fa92f687","target":"record","created_at":"2026-05-18T03:02:31Z","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":"5797fb6d91923e059818f1f78aa313c29b73522f0b47b192acf2594bdb29aeaf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-13T15:39:29Z","title_canon_sha256":"a1dd55c6c6d736e3f6b010d2b707f0576129685eef3f87d3fac962bb312e3893"},"schema_version":"1.0","source":{"id":"1401.2875","kind":"arxiv","version":1}},"canonical_sha256":"c8324c7bc9b602e3d4eebd8b847bdb7ca9a59fe13a1e4bcd3c38b18179ec38d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8324c7bc9b602e3d4eebd8b847bdb7ca9a59fe13a1e4bcd3c38b18179ec38d3","first_computed_at":"2026-05-18T03:02:31.629325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:02:31.629325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qXgq2/keIS307fMV0BdwOL1QvrY3UwK+x8n9jmrjixlK4DBYcTgr4aPMKDmeyqfLgWZRw47q387mtpfSPhdZDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:02:31.630169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.2875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf39f005e4761e661f5af49e0168e93f70c7a8d01811fa175a3f2892fa92f687","sha256:4640daf67b16647c41f8a9cada72db102b1592d139dca251e52ca169d71b954d"],"state_sha256":"f3f3e0b59355c145427eb2f468b891220fe99b61afce26bc11094d5db712d75f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"raVi4jlqxA9d7lxvXicHtOq1A6Ma6DNeA8UgYtaIMrn3QN306vLvlv0t9wDqwC0hK91C02sUCdhoZ2rzoM4VCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T11:37:32.894172Z","bundle_sha256":"9ebc014fe61ea0a143ed039592ec217ac11f74f81fd88e219a6e4e48007ceb7f"}}