{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:S4XTWKWGJI4PZPSQZQLM753N7E","short_pith_number":"pith:S4XTWKWG","canonical_record":{"source":{"id":"1201.2042","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-01-10T12:48:50Z","cross_cats_sorted":[],"title_canon_sha256":"33d530ab420feb5ff2c9e512cd09e29c81881990bff71f46a17dbe95777271a7","abstract_canon_sha256":"bffa10618b0ccd432a91fe8e508dd92f68d7c35dbab395aa402da39cf82aa53a"},"schema_version":"1.0"},"canonical_sha256":"972f3b2ac64a38fcbe50cc16cff76df92321bb30dfa9b3bd977733a37f7b3d91","source":{"kind":"arxiv","id":"1201.2042","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.2042","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"arxiv_version","alias_value":"1201.2042v1","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.2042","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"pith_short_12","alias_value":"S4XTWKWGJI4P","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"S4XTWKWGJI4PZPSQ","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"S4XTWKWG","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:S4XTWKWGJI4PZPSQZQLM753N7E","target":"record","payload":{"canonical_record":{"source":{"id":"1201.2042","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-01-10T12:48:50Z","cross_cats_sorted":[],"title_canon_sha256":"33d530ab420feb5ff2c9e512cd09e29c81881990bff71f46a17dbe95777271a7","abstract_canon_sha256":"bffa10618b0ccd432a91fe8e508dd92f68d7c35dbab395aa402da39cf82aa53a"},"schema_version":"1.0"},"canonical_sha256":"972f3b2ac64a38fcbe50cc16cff76df92321bb30dfa9b3bd977733a37f7b3d91","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:53.499605Z","signature_b64":"bFRgMEZE4DVyLbQ1aQJy8e/ApHJsZjm/7LiSRQGfvyZSahDA5UZlHsQjP39GshUBXUQ8WfDqt/VTlQJ13qY1BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"972f3b2ac64a38fcbe50cc16cff76df92321bb30dfa9b3bd977733a37f7b3d91","last_reissued_at":"2026-05-18T01:58:53.499056Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:53.499056Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1201.2042","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":"2026-05-18T01:58:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cW8pC0M68jY03xKkdQZ/QHa7dwkP9StdntmXR/6ohrPfGfEeJMYHGGzAatUyO64xIYkP5MuD0ycTRnRyoMqjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:04:30.352733Z"},"content_sha256":"fb293a8685dd7b944e065a89866d6f0f669e7fcee56faf863605d3b4515bc93f","schema_version":"1.0","event_id":"sha256:fb293a8685dd7b944e065a89866d6f0f669e7fcee56faf863605d3b4515bc93f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:S4XTWKWGJI4PZPSQZQLM753N7E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NGC 6778: a disrupted planetary nebula around a binary central star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"L. F. Miranda, M. A. Guerrero","submitted_at":"2012-01-10T12:48:50Z","abstract_excerpt":"The planetary nebula (PN) NGC 6778 harbors a binary central star with a short orbital period and displays two systems of fast collimated outflows. In order to assess the influence of the evolution through a common-envelope phase of the binary system of NGC 6778 on its formation and shaping, we have used narrow-band images and high-dispersion long-slit spectra of the nebula to investigate its detailed morphology and kinematics. We find that the overall structure of NGC 6778 can be described as a bipolar PN. The equatorial ring is highly disrupted and many radial features (filamentary wisps and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.2042","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":"2026-05-18T01:58:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7+BuNGZZDK9NEFEsUCA+UEn4loaQmndEOxwaVOp5tc/BKeUtgfvQHBsxgfIRBOofioIPWeqlzVDnt4aYMKx/CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:04:30.353427Z"},"content_sha256":"49281f2d4a8345a22d53790e317f4e07a45c828431642c74273133e140b6aec2","schema_version":"1.0","event_id":"sha256:49281f2d4a8345a22d53790e317f4e07a45c828431642c74273133e140b6aec2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4XTWKWGJI4PZPSQZQLM753N7E/bundle.json","state_url":"https://pith.science/pith/S4XTWKWGJI4PZPSQZQLM753N7E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4XTWKWGJI4PZPSQZQLM753N7E/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":"2026-06-05T08:04:30Z","links":{"resolver":"https://pith.science/pith/S4XTWKWGJI4PZPSQZQLM753N7E","bundle":"https://pith.science/pith/S4XTWKWGJI4PZPSQZQLM753N7E/bundle.json","state":"https://pith.science/pith/S4XTWKWGJI4PZPSQZQLM753N7E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4XTWKWGJI4PZPSQZQLM753N7E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:S4XTWKWGJI4PZPSQZQLM753N7E","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":"bffa10618b0ccd432a91fe8e508dd92f68d7c35dbab395aa402da39cf82aa53a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-01-10T12:48:50Z","title_canon_sha256":"33d530ab420feb5ff2c9e512cd09e29c81881990bff71f46a17dbe95777271a7"},"schema_version":"1.0","source":{"id":"1201.2042","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.2042","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"arxiv_version","alias_value":"1201.2042v1","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.2042","created_at":"2026-05-18T01:58:53Z"},{"alias_kind":"pith_short_12","alias_value":"S4XTWKWGJI4P","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"S4XTWKWGJI4PZPSQ","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"S4XTWKWG","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:49281f2d4a8345a22d53790e317f4e07a45c828431642c74273133e140b6aec2","target":"graph","created_at":"2026-05-18T01:58:53Z","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":"The planetary nebula (PN) NGC 6778 harbors a binary central star with a short orbital period and displays two systems of fast collimated outflows. In order to assess the influence of the evolution through a common-envelope phase of the binary system of NGC 6778 on its formation and shaping, we have used narrow-band images and high-dispersion long-slit spectra of the nebula to investigate its detailed morphology and kinematics. We find that the overall structure of NGC 6778 can be described as a bipolar PN. The equatorial ring is highly disrupted and many radial features (filamentary wisps and ","authors_text":"L. F. Miranda, M. A. Guerrero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-01-10T12:48:50Z","title":"NGC 6778: a disrupted planetary nebula around a binary central star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.2042","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:fb293a8685dd7b944e065a89866d6f0f669e7fcee56faf863605d3b4515bc93f","target":"record","created_at":"2026-05-18T01:58:53Z","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":"bffa10618b0ccd432a91fe8e508dd92f68d7c35dbab395aa402da39cf82aa53a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-01-10T12:48:50Z","title_canon_sha256":"33d530ab420feb5ff2c9e512cd09e29c81881990bff71f46a17dbe95777271a7"},"schema_version":"1.0","source":{"id":"1201.2042","kind":"arxiv","version":1}},"canonical_sha256":"972f3b2ac64a38fcbe50cc16cff76df92321bb30dfa9b3bd977733a37f7b3d91","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"972f3b2ac64a38fcbe50cc16cff76df92321bb30dfa9b3bd977733a37f7b3d91","first_computed_at":"2026-05-18T01:58:53.499056Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:53.499056Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bFRgMEZE4DVyLbQ1aQJy8e/ApHJsZjm/7LiSRQGfvyZSahDA5UZlHsQjP39GshUBXUQ8WfDqt/VTlQJ13qY1BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:53.499605Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.2042","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb293a8685dd7b944e065a89866d6f0f669e7fcee56faf863605d3b4515bc93f","sha256:49281f2d4a8345a22d53790e317f4e07a45c828431642c74273133e140b6aec2"],"state_sha256":"1138f750cc5664f9efee8ef28cd274caf0c06ac624b8cf3370dd19f2e0da023c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LZC6dX+ZpW/iC3IpoYIq/KnpWAE0x62oh5fqKxRUZ1MqtizZMNBBXIKxxYyzD/7UNGCHnxWVNHdIveeo1JvyAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T08:04:30.357151Z","bundle_sha256":"2163ef0a78134882121b13c472181b75d407658e9e88bd8c8cfa7fabb5099cd1"}}