{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:IECU34LROLWRZ4YTIMQLRLG5C7","short_pith_number":"pith:IECU34LR","canonical_record":{"source":{"id":"1601.02606","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-11T21:00:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f95915c976d3ecf2575c3c10f1227607139564ee404fdd024724bff0fc5c68bf","abstract_canon_sha256":"95aa21d58d2efcc1b8c1c50f25f576db36f3d532eba1757b86df040ac367368f"},"schema_version":"1.0"},"canonical_sha256":"41054df17172ed1cf3134320b8acdd17f9521387aa858aa61140d3c4cf2f3553","source":{"kind":"arxiv","id":"1601.02606","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.02606","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"arxiv_version","alias_value":"1601.02606v1","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02606","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"pith_short_12","alias_value":"IECU34LROLWR","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IECU34LROLWRZ4YT","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IECU34LR","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:IECU34LROLWRZ4YTIMQLRLG5C7","target":"record","payload":{"canonical_record":{"source":{"id":"1601.02606","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-11T21:00:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f95915c976d3ecf2575c3c10f1227607139564ee404fdd024724bff0fc5c68bf","abstract_canon_sha256":"95aa21d58d2efcc1b8c1c50f25f576db36f3d532eba1757b86df040ac367368f"},"schema_version":"1.0"},"canonical_sha256":"41054df17172ed1cf3134320b8acdd17f9521387aa858aa61140d3c4cf2f3553","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:25.083210Z","signature_b64":"tcFQKa7oV7SDZ95EDsaMS7vzWXr3ZIfOBRP1cSK371h4gdUwD6FbanvXSmDq5W2FfU34C8qkBKDNZvN0gH8fAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41054df17172ed1cf3134320b8acdd17f9521387aa858aa61140d3c4cf2f3553","last_reissued_at":"2026-05-18T01:19:25.082591Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:25.082591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.02606","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":"2026-05-18T01:19:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcSBiepctW4VEXftb/YrW0dqpJVTsmK/yanxtqaNUvYE3UZE9ykWtm3sLOq+yjEZOnhZM1JUaXLmS1tBw5CLBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:33:25.623174Z"},"content_sha256":"4e37ede9a5294e036b2364eeeb8e792fa0f29febfe41af70304f90f2f1b99497","schema_version":"1.0","event_id":"sha256:4e37ede9a5294e036b2364eeeb8e792fa0f29febfe41af70304f90f2f1b99497"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:IECU34LROLWRZ4YTIMQLRLG5C7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical evolution of star forming regions - II. Basic kinematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"2. University of Hertfordshire, 3) (1. Liverpool John Moores University, 3. Keele University, Nicholas J. Wright (2, Richard J. Parker (1), UK, UK)","submitted_at":"2016-01-11T21:00:00Z","abstract_excerpt":"We follow the dynamical evolution of young star-forming regions with a wide range of initial conditions and examine how the radial velocity dispersion, $\\sigma$, evolves over time. We compare this velocity dispersion to the theoretically expected value for the velocity dispersion if a region were in virial equilibrium, $\\sigma_{\\rm vir}$ and thus assess the virial state ($\\sigma / \\sigma_{\\rm vir}$) of these systems. We find that in regions that are initially subvirial, or in global virial equilibrium but subvirial on local scales, the system relaxes to virial equilibrium within several millio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02606","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":"2026-05-18T01:19:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"54GVkoe96M1zRZYFQ/HA7i+1wCs3LhU4/vhkWGjoKV8fBk0R7qObEJZGnCscv9OtfJopeZ1jUbYixuWjAOS3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:33:25.623844Z"},"content_sha256":"04705ba94d0998d8768b65a655bf7180c4562ec971eff36fa00bef996b22aaf5","schema_version":"1.0","event_id":"sha256:04705ba94d0998d8768b65a655bf7180c4562ec971eff36fa00bef996b22aaf5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IECU34LROLWRZ4YTIMQLRLG5C7/bundle.json","state_url":"https://pith.science/pith/IECU34LROLWRZ4YTIMQLRLG5C7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IECU34LROLWRZ4YTIMQLRLG5C7/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":"2026-05-28T22:33:25Z","links":{"resolver":"https://pith.science/pith/IECU34LROLWRZ4YTIMQLRLG5C7","bundle":"https://pith.science/pith/IECU34LROLWRZ4YTIMQLRLG5C7/bundle.json","state":"https://pith.science/pith/IECU34LROLWRZ4YTIMQLRLG5C7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IECU34LROLWRZ4YTIMQLRLG5C7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:IECU34LROLWRZ4YTIMQLRLG5C7","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":"95aa21d58d2efcc1b8c1c50f25f576db36f3d532eba1757b86df040ac367368f","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-11T21:00:00Z","title_canon_sha256":"f95915c976d3ecf2575c3c10f1227607139564ee404fdd024724bff0fc5c68bf"},"schema_version":"1.0","source":{"id":"1601.02606","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.02606","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"arxiv_version","alias_value":"1601.02606v1","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02606","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"pith_short_12","alias_value":"IECU34LROLWR","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IECU34LROLWRZ4YT","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IECU34LR","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:04705ba94d0998d8768b65a655bf7180c4562ec971eff36fa00bef996b22aaf5","target":"graph","created_at":"2026-05-18T01:19:25Z","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 follow the dynamical evolution of young star-forming regions with a wide range of initial conditions and examine how the radial velocity dispersion, $\\sigma$, evolves over time. We compare this velocity dispersion to the theoretically expected value for the velocity dispersion if a region were in virial equilibrium, $\\sigma_{\\rm vir}$ and thus assess the virial state ($\\sigma / \\sigma_{\\rm vir}$) of these systems. We find that in regions that are initially subvirial, or in global virial equilibrium but subvirial on local scales, the system relaxes to virial equilibrium within several millio","authors_text":"2. University of Hertfordshire, 3) (1. Liverpool John Moores University, 3. Keele University, Nicholas J. Wright (2, Richard J. Parker (1), UK, UK)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-11T21:00:00Z","title":"Dynamical evolution of star forming regions - II. Basic kinematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02606","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":"sha256:4e37ede9a5294e036b2364eeeb8e792fa0f29febfe41af70304f90f2f1b99497","target":"record","created_at":"2026-05-18T01:19:25Z","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":"95aa21d58d2efcc1b8c1c50f25f576db36f3d532eba1757b86df040ac367368f","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-11T21:00:00Z","title_canon_sha256":"f95915c976d3ecf2575c3c10f1227607139564ee404fdd024724bff0fc5c68bf"},"schema_version":"1.0","source":{"id":"1601.02606","kind":"arxiv","version":1}},"canonical_sha256":"41054df17172ed1cf3134320b8acdd17f9521387aa858aa61140d3c4cf2f3553","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41054df17172ed1cf3134320b8acdd17f9521387aa858aa61140d3c4cf2f3553","first_computed_at":"2026-05-18T01:19:25.082591Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:25.082591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tcFQKa7oV7SDZ95EDsaMS7vzWXr3ZIfOBRP1cSK371h4gdUwD6FbanvXSmDq5W2FfU34C8qkBKDNZvN0gH8fAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:25.083210Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.02606","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e37ede9a5294e036b2364eeeb8e792fa0f29febfe41af70304f90f2f1b99497","sha256:04705ba94d0998d8768b65a655bf7180c4562ec971eff36fa00bef996b22aaf5"],"state_sha256":"ec3ef62791e09f8fd6921f8ccf6224ebeb21d0b97559f117c21c71936be8de11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ffdJdFlr190zcn1qje0gUMHZxmMMcEo8JPDp/oL2kKtzt56dm8oUapb9Pe0pHfSUSHfXucJSZqHIHp4jdeXxDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T22:33:25.627167Z","bundle_sha256":"168baafd8ca2b7f8cf17a98ce745d7a3041cfc673fb8ac0719141bee16ad6de1"}}