{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QDVZR5EQ352GBRVNQUVWBWLS73","short_pith_number":"pith:QDVZR5EQ","canonical_record":{"source":{"id":"1903.09501","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T13:33:17Z","cross_cats_sorted":[],"title_canon_sha256":"0932f1f37bf4f35643d234f128f4223747ab08baa3a18d26f1adb3a44c62ae1d","abstract_canon_sha256":"09100a3446392cc02d87a6b7cfa8f2a63c4db1c53634ace31673e004bf9f916c"},"schema_version":"1.0"},"canonical_sha256":"80eb98f490df7460c6ad852b60d972feeac9cc3c14eb3ba828bbfb55ae815d92","source":{"kind":"arxiv","id":"1903.09501","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.09501","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"arxiv_version","alias_value":"1903.09501v1","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09501","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"pith_short_12","alias_value":"QDVZR5EQ352G","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"QDVZR5EQ352GBRVN","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"QDVZR5EQ","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QDVZR5EQ352GBRVNQUVWBWLS73","target":"record","payload":{"canonical_record":{"source":{"id":"1903.09501","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T13:33:17Z","cross_cats_sorted":[],"title_canon_sha256":"0932f1f37bf4f35643d234f128f4223747ab08baa3a18d26f1adb3a44c62ae1d","abstract_canon_sha256":"09100a3446392cc02d87a6b7cfa8f2a63c4db1c53634ace31673e004bf9f916c"},"schema_version":"1.0"},"canonical_sha256":"80eb98f490df7460c6ad852b60d972feeac9cc3c14eb3ba828bbfb55ae815d92","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:38.434875Z","signature_b64":"ArGvgfiTJFbFYAvRcP88sXQWq565bg5bjYedaPWIIELAzWLeSc6XZX7lqol5bq37lXBTADjRTastsKQPSRC/Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80eb98f490df7460c6ad852b60d972feeac9cc3c14eb3ba828bbfb55ae815d92","last_reissued_at":"2026-05-17T23:49:38.434171Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:38.434171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.09501","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":"2026-05-17T23:49:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hHFuVPBVuBDszsCgi0hJmcX9/YsJiPaJCz2wUkopwrW8Jk18R2TFH83DOHPl/uCPXn5cD1KWOI6oWRM+FZusCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:26:57.257095Z"},"content_sha256":"39b196fd4c34cf73823102a21c5c67476fbaacb5a03163e211ef29455795875c","schema_version":"1.0","event_id":"sha256:39b196fd4c34cf73823102a21c5c67476fbaacb5a03163e211ef29455795875c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QDVZR5EQ352GBRVNQUVWBWLS73","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long uninterrupted photometric observations of the Wolf-Rayet star EZ CMa by the Toronto {\\em{BRITE}} satellite reveal a very fast apsidal motion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Gloria Koenigsberger, Werner Schmutz","submitted_at":"2019-03-22T13:33:17Z","abstract_excerpt":"Context. The variability of the Wolf-Rayet star EZ CMa has been documented for close to half a century, and a clear periodicity of $\\sim$3.7 days is established. However, all attempts to prove that it is a binary have failed because the photometric, spectroscopic, and polarimetric variations are not coherent over more than a few orbital cycles.\n  Aims. In this letter we show that the lack of coherence in the variability can be explained with a very rapid apsidal motion in a binary orbit.}\n  Methods. We measured the times of minima in a recently published exceptionally long photometric light cu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09501","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":"2026-05-17T23:49:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YJFf4W2DvGblVqjvup3yMCRHygdeMNSkkxEvyCH9AnUCbNYn+gcMy39d7TLBYFlhq1imK3wevr8W7U8eYJbmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:26:57.257838Z"},"content_sha256":"153f033562623678c32e1185227149c525d853e2ba2d416ec88411d72ce38d9d","schema_version":"1.0","event_id":"sha256:153f033562623678c32e1185227149c525d853e2ba2d416ec88411d72ce38d9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QDVZR5EQ352GBRVNQUVWBWLS73/bundle.json","state_url":"https://pith.science/pith/QDVZR5EQ352GBRVNQUVWBWLS73/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QDVZR5EQ352GBRVNQUVWBWLS73/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":"2026-06-12T04:26:57Z","links":{"resolver":"https://pith.science/pith/QDVZR5EQ352GBRVNQUVWBWLS73","bundle":"https://pith.science/pith/QDVZR5EQ352GBRVNQUVWBWLS73/bundle.json","state":"https://pith.science/pith/QDVZR5EQ352GBRVNQUVWBWLS73/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QDVZR5EQ352GBRVNQUVWBWLS73/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QDVZR5EQ352GBRVNQUVWBWLS73","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":"09100a3446392cc02d87a6b7cfa8f2a63c4db1c53634ace31673e004bf9f916c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T13:33:17Z","title_canon_sha256":"0932f1f37bf4f35643d234f128f4223747ab08baa3a18d26f1adb3a44c62ae1d"},"schema_version":"1.0","source":{"id":"1903.09501","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.09501","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"arxiv_version","alias_value":"1903.09501v1","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09501","created_at":"2026-05-17T23:49:38Z"},{"alias_kind":"pith_short_12","alias_value":"QDVZR5EQ352G","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"QDVZR5EQ352GBRVN","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"QDVZR5EQ","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:153f033562623678c32e1185227149c525d853e2ba2d416ec88411d72ce38d9d","target":"graph","created_at":"2026-05-17T23:49:38Z","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":"Context. The variability of the Wolf-Rayet star EZ CMa has been documented for close to half a century, and a clear periodicity of $\\sim$3.7 days is established. However, all attempts to prove that it is a binary have failed because the photometric, spectroscopic, and polarimetric variations are not coherent over more than a few orbital cycles.\n  Aims. In this letter we show that the lack of coherence in the variability can be explained with a very rapid apsidal motion in a binary orbit.}\n  Methods. We measured the times of minima in a recently published exceptionally long photometric light cu","authors_text":"Gloria Koenigsberger, Werner Schmutz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T13:33:17Z","title":"Long uninterrupted photometric observations of the Wolf-Rayet star EZ CMa by the Toronto {\\em{BRITE}} satellite reveal a very fast apsidal motion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09501","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":"sha256:39b196fd4c34cf73823102a21c5c67476fbaacb5a03163e211ef29455795875c","target":"record","created_at":"2026-05-17T23:49:38Z","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":"09100a3446392cc02d87a6b7cfa8f2a63c4db1c53634ace31673e004bf9f916c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T13:33:17Z","title_canon_sha256":"0932f1f37bf4f35643d234f128f4223747ab08baa3a18d26f1adb3a44c62ae1d"},"schema_version":"1.0","source":{"id":"1903.09501","kind":"arxiv","version":1}},"canonical_sha256":"80eb98f490df7460c6ad852b60d972feeac9cc3c14eb3ba828bbfb55ae815d92","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80eb98f490df7460c6ad852b60d972feeac9cc3c14eb3ba828bbfb55ae815d92","first_computed_at":"2026-05-17T23:49:38.434171Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:38.434171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ArGvgfiTJFbFYAvRcP88sXQWq565bg5bjYedaPWIIELAzWLeSc6XZX7lqol5bq37lXBTADjRTastsKQPSRC/Ag==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:38.434875Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.09501","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39b196fd4c34cf73823102a21c5c67476fbaacb5a03163e211ef29455795875c","sha256:153f033562623678c32e1185227149c525d853e2ba2d416ec88411d72ce38d9d"],"state_sha256":"ca9ad3b8f6690311ba02c762c60d7f4f3cb4b5f59b524c1883b7b3f3bf353307"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8qiTgy/cXKbRUXjPLbdEDfz6YBnRkkhbAXj++FuvCItg1aG9pPeXW7rjfvrFqfzsLgqKJq3txAjlzB8JpVlMDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T04:26:57.262078Z","bundle_sha256":"b2bf3e8418710706c3e7cce43033c199135e5433c1ad4c993b476f7d577436ff"}}