{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:4HCVGVJL62D35AENOADEJBZGNF","short_pith_number":"pith:4HCVGVJL","canonical_record":{"source":{"id":"1805.11630","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-29T18:01:05Z","cross_cats_sorted":[],"title_canon_sha256":"7e5a8cb82539c579c84419f1b7b669b79365292b8f38a4a6adab866f0f2c89d9","abstract_canon_sha256":"f3523179c1696abad8462fff7777787ec4a15af2699aa1d06d5650369a8f8756"},"schema_version":"1.0"},"canonical_sha256":"e1c553552bf687be808d70064487266963cd59cd0fb86e5e69d016c8d443516a","source":{"kind":"arxiv","id":"1805.11630","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.11630","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"arxiv_version","alias_value":"1805.11630v1","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11630","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"pith_short_12","alias_value":"4HCVGVJL62D3","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4HCVGVJL62D35AEN","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4HCVGVJL","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:4HCVGVJL62D35AENOADEJBZGNF","target":"record","payload":{"canonical_record":{"source":{"id":"1805.11630","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-29T18:01:05Z","cross_cats_sorted":[],"title_canon_sha256":"7e5a8cb82539c579c84419f1b7b669b79365292b8f38a4a6adab866f0f2c89d9","abstract_canon_sha256":"f3523179c1696abad8462fff7777787ec4a15af2699aa1d06d5650369a8f8756"},"schema_version":"1.0"},"canonical_sha256":"e1c553552bf687be808d70064487266963cd59cd0fb86e5e69d016c8d443516a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:16.738489Z","signature_b64":"DqDj5SxBK2aPa3EjlY9aIoA1hk1VVvb8ssIvQa8ih6xYpfqOzM91nDvb5TVjw4rkoqCr1sDq9Cddr/v7sDl0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e1c553552bf687be808d70064487266963cd59cd0fb86e5e69d016c8d443516a","last_reissued_at":"2026-05-18T00:12:16.737856Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:16.737856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.11630","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":"2026-05-18T00:12:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TXu/wLXyOigWhljOyDxVHM5pkdyklkHkAroCX2zxYWNmcNS6+/tGddAgD0A5aTPBNyRQM/i0lUZ6DSDWI+7hAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T22:52:25.879827Z"},"content_sha256":"9a01a6745e1262090b3f490785f0df0d876cde4abd8ca3e9b32c487ed4999b86","schema_version":"1.0","event_id":"sha256:9a01a6745e1262090b3f490785f0df0d876cde4abd8ca3e9b32c487ed4999b86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:4HCVGVJL62D35AENOADEJBZGNF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a Molecular Collision Front in Interacting Galaxies NGC 4567/4568 with ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hiroyuki Kaneko, Nario Kuno, Takayuki R. Saitoh","submitted_at":"2018-05-29T18:01:05Z","abstract_excerpt":"We present results of $^{12}$CO(J = 1-0) imaging observations of NGC 4567/4568, a galaxy pair in a close encounter, with Atacama Large Millimetre/submillimetre Array. For the first time, we find clear evidence of a molecular collision front whose velocity dispersion is 16.8$\\pm$1.4 km s$^{-1}$ at the overlapping region owing to high spatial and velocity resolution. By integrating over the velocity width that corresponds to the molecular collision front, we find a long filamentary structure with a size of 1800 pc $\\times$ 350 pc at the collision front. This filamentary molecular structure spati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11630","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":"2026-05-18T00:12:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QFDTB+muMs2oTrBbVowQ7asnszMMVupj1oq0ZjOqUWxwDdFj+lHttMEg+xiiglhrtOTwlIDR61kGcWu6aqIPDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T22:52:25.880175Z"},"content_sha256":"64b5b06965aa3e239eaa615bfd623be310467c7531af4c109e88ad62ebb20720","schema_version":"1.0","event_id":"sha256:64b5b06965aa3e239eaa615bfd623be310467c7531af4c109e88ad62ebb20720"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4HCVGVJL62D35AENOADEJBZGNF/bundle.json","state_url":"https://pith.science/pith/4HCVGVJL62D35AENOADEJBZGNF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4HCVGVJL62D35AENOADEJBZGNF/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":"2026-06-03T22:52:25Z","links":{"resolver":"https://pith.science/pith/4HCVGVJL62D35AENOADEJBZGNF","bundle":"https://pith.science/pith/4HCVGVJL62D35AENOADEJBZGNF/bundle.json","state":"https://pith.science/pith/4HCVGVJL62D35AENOADEJBZGNF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4HCVGVJL62D35AENOADEJBZGNF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4HCVGVJL62D35AENOADEJBZGNF","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":"f3523179c1696abad8462fff7777787ec4a15af2699aa1d06d5650369a8f8756","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-29T18:01:05Z","title_canon_sha256":"7e5a8cb82539c579c84419f1b7b669b79365292b8f38a4a6adab866f0f2c89d9"},"schema_version":"1.0","source":{"id":"1805.11630","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.11630","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"arxiv_version","alias_value":"1805.11630v1","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11630","created_at":"2026-05-18T00:12:16Z"},{"alias_kind":"pith_short_12","alias_value":"4HCVGVJL62D3","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4HCVGVJL62D35AEN","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4HCVGVJL","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:64b5b06965aa3e239eaa615bfd623be310467c7531af4c109e88ad62ebb20720","target":"graph","created_at":"2026-05-18T00:12:16Z","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 results of $^{12}$CO(J = 1-0) imaging observations of NGC 4567/4568, a galaxy pair in a close encounter, with Atacama Large Millimetre/submillimetre Array. For the first time, we find clear evidence of a molecular collision front whose velocity dispersion is 16.8$\\pm$1.4 km s$^{-1}$ at the overlapping region owing to high spatial and velocity resolution. By integrating over the velocity width that corresponds to the molecular collision front, we find a long filamentary structure with a size of 1800 pc $\\times$ 350 pc at the collision front. This filamentary molecular structure spati","authors_text":"Hiroyuki Kaneko, Nario Kuno, Takayuki R. Saitoh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-29T18:01:05Z","title":"Discovery of a Molecular Collision Front in Interacting Galaxies NGC 4567/4568 with ALMA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11630","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":"sha256:9a01a6745e1262090b3f490785f0df0d876cde4abd8ca3e9b32c487ed4999b86","target":"record","created_at":"2026-05-18T00:12:16Z","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":"f3523179c1696abad8462fff7777787ec4a15af2699aa1d06d5650369a8f8756","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-29T18:01:05Z","title_canon_sha256":"7e5a8cb82539c579c84419f1b7b669b79365292b8f38a4a6adab866f0f2c89d9"},"schema_version":"1.0","source":{"id":"1805.11630","kind":"arxiv","version":1}},"canonical_sha256":"e1c553552bf687be808d70064487266963cd59cd0fb86e5e69d016c8d443516a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e1c553552bf687be808d70064487266963cd59cd0fb86e5e69d016c8d443516a","first_computed_at":"2026-05-18T00:12:16.737856Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:16.737856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DqDj5SxBK2aPa3EjlY9aIoA1hk1VVvb8ssIvQa8ih6xYpfqOzM91nDvb5TVjw4rkoqCr1sDq9Cddr/v7sDl0AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:16.738489Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.11630","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a01a6745e1262090b3f490785f0df0d876cde4abd8ca3e9b32c487ed4999b86","sha256:64b5b06965aa3e239eaa615bfd623be310467c7531af4c109e88ad62ebb20720"],"state_sha256":"5e2069b3222b411e150f6a8acadee2cd9330b850828b7ff8222fd93da1161fb2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X/9rR1CGM82q1PWEhoVHESCGmCKZZgZ+PkBQEkmbk6BHB9H2mX1hmddO/Y7sC3MGYfjLkQ8cCMHh/+LfUi2BDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T22:52:25.882156Z","bundle_sha256":"95d191a607dbe94f5a4254953e50c0c172c5d6fe6237e9f9d9e5d0209cae9da8"}}