{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:VA674K3XIJSJFL6ABM6JPQPLZ7","short_pith_number":"pith:VA674K3X","canonical_record":{"source":{"id":"1311.3639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-11-14T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"9b967b34df5a58c5a7ec7f264785dafc6ea9186acea3fda88fdb7cb22429fab9","abstract_canon_sha256":"247e915e854c3f5286e7c4b1f8623deab021eb67e8a7bcce62dfb67736553330"},"schema_version":"1.0"},"canonical_sha256":"a83dfe2b77426492afc00b3c97c1ebcfff82155a78349eb4fc95d8fdf046b596","source":{"kind":"arxiv","id":"1311.3639","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.3639","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"arxiv_version","alias_value":"1311.3639v1","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.3639","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"pith_short_12","alias_value":"VA674K3XIJSJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VA674K3XIJSJFL6A","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VA674K3X","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:VA674K3XIJSJFL6ABM6JPQPLZ7","target":"record","payload":{"canonical_record":{"source":{"id":"1311.3639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-11-14T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"9b967b34df5a58c5a7ec7f264785dafc6ea9186acea3fda88fdb7cb22429fab9","abstract_canon_sha256":"247e915e854c3f5286e7c4b1f8623deab021eb67e8a7bcce62dfb67736553330"},"schema_version":"1.0"},"canonical_sha256":"a83dfe2b77426492afc00b3c97c1ebcfff82155a78349eb4fc95d8fdf046b596","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:30.848871Z","signature_b64":"WibCgiARiLderpgE8+6e6sLCBXmYzfliWEwgKGZJNQWdbyTfSWA6HtNElF3SGgAGWl5f4dL75OJPaEcUJwkpCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a83dfe2b77426492afc00b3c97c1ebcfff82155a78349eb4fc95d8fdf046b596","last_reissued_at":"2026-05-18T01:46:30.848413Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:30.848413Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.3639","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":"2026-05-18T01:46:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4q1l5lgRgUW8K3G+2Qr2YC/B2htKcRj3zRbDk1U19YZIPHBEBZx2wKvH7HVicEpXjBr4qZlnnUn/F5T3C0MDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T01:10:00.154405Z"},"content_sha256":"bc329082c8a8c81bb725401dc8a9923c50e717c558d7a0409f3d4e79a759760c","schema_version":"1.0","event_id":"sha256:bc329082c8a8c81bb725401dc8a9923c50e717c558d7a0409f3d4e79a759760c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:VA674K3XIJSJFL6ABM6JPQPLZ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical evolution of star forming regions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2. University of Hertfordshire, 3. University of Sheffield, Michael R. Meyer (1) (1. ETH Zurich, Nicholas J. Wright (2), Richard J. Parker (1), Simon P. Goodwin (3), Switzerland, UK, UK)","submitted_at":"2013-11-14T20:00:00Z","abstract_excerpt":"We model the dynamical evolution of star forming regions with a wide range of initial properties. We follow the evolution of the regions' substructure using the Q-parameter, we search for dynamical mass segregation using the Lambda_MSR technique, and we also quantify the evolution of local density around stars as a function of mass using the Sigma_LDR method.\n  The amount of dynamical mass segregation measured by Lambda_MSR is generally only significant for subvirial and virialised, substructured regions - which usually evolve to form bound clusters. The Sigma_LDR method shows that massive sta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.3639","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":"2026-05-18T01:46:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WO4jsbTENCv2vY2DG3RJD0+01yhixwwrzknagLlole2mhZ5zErrMUiq6fZCUeg/kdSpeb+gXGKqFgr1vut3kAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T01:10:00.155043Z"},"content_sha256":"2331305c42e14b446cb64c95eaed2a4cc4d9f6b4520f3dff6a42da81327d62c9","schema_version":"1.0","event_id":"sha256:2331305c42e14b446cb64c95eaed2a4cc4d9f6b4520f3dff6a42da81327d62c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/bundle.json","state_url":"https://pith.science/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/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":"2026-06-26T01:10:00Z","links":{"resolver":"https://pith.science/pith/VA674K3XIJSJFL6ABM6JPQPLZ7","bundle":"https://pith.science/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/bundle.json","state":"https://pith.science/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VA674K3XIJSJFL6ABM6JPQPLZ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VA674K3XIJSJFL6ABM6JPQPLZ7","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":"247e915e854c3f5286e7c4b1f8623deab021eb67e8a7bcce62dfb67736553330","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-11-14T20:00:00Z","title_canon_sha256":"9b967b34df5a58c5a7ec7f264785dafc6ea9186acea3fda88fdb7cb22429fab9"},"schema_version":"1.0","source":{"id":"1311.3639","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.3639","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"arxiv_version","alias_value":"1311.3639v1","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.3639","created_at":"2026-05-18T01:46:30Z"},{"alias_kind":"pith_short_12","alias_value":"VA674K3XIJSJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VA674K3XIJSJFL6A","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VA674K3X","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:2331305c42e14b446cb64c95eaed2a4cc4d9f6b4520f3dff6a42da81327d62c9","target":"graph","created_at":"2026-05-18T01:46:30Z","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 model the dynamical evolution of star forming regions with a wide range of initial properties. We follow the evolution of the regions' substructure using the Q-parameter, we search for dynamical mass segregation using the Lambda_MSR technique, and we also quantify the evolution of local density around stars as a function of mass using the Sigma_LDR method.\n  The amount of dynamical mass segregation measured by Lambda_MSR is generally only significant for subvirial and virialised, substructured regions - which usually evolve to form bound clusters. The Sigma_LDR method shows that massive sta","authors_text":"2. University of Hertfordshire, 3. University of Sheffield, Michael R. Meyer (1) (1. ETH Zurich, Nicholas J. Wright (2), Richard J. Parker (1), Simon P. Goodwin (3), Switzerland, UK, UK)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-11-14T20:00:00Z","title":"Dynamical evolution of star forming regions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.3639","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:bc329082c8a8c81bb725401dc8a9923c50e717c558d7a0409f3d4e79a759760c","target":"record","created_at":"2026-05-18T01:46:30Z","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":"247e915e854c3f5286e7c4b1f8623deab021eb67e8a7bcce62dfb67736553330","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-11-14T20:00:00Z","title_canon_sha256":"9b967b34df5a58c5a7ec7f264785dafc6ea9186acea3fda88fdb7cb22429fab9"},"schema_version":"1.0","source":{"id":"1311.3639","kind":"arxiv","version":1}},"canonical_sha256":"a83dfe2b77426492afc00b3c97c1ebcfff82155a78349eb4fc95d8fdf046b596","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a83dfe2b77426492afc00b3c97c1ebcfff82155a78349eb4fc95d8fdf046b596","first_computed_at":"2026-05-18T01:46:30.848413Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:30.848413Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WibCgiARiLderpgE8+6e6sLCBXmYzfliWEwgKGZJNQWdbyTfSWA6HtNElF3SGgAGWl5f4dL75OJPaEcUJwkpCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:30.848871Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.3639","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc329082c8a8c81bb725401dc8a9923c50e717c558d7a0409f3d4e79a759760c","sha256:2331305c42e14b446cb64c95eaed2a4cc4d9f6b4520f3dff6a42da81327d62c9"],"state_sha256":"3197188bba5faf221482abe7d2a2b0f4759e5a60d12f7352f41b7d3b63ae37fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iUtdyY6urKhjyJJZqCnMm1UYk0Vc0dNYBL46vnd/jjDgpPmvxIsyQ5sGyLJA6qVq574qVyr+V6buKxfsudQXAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T01:10:00.157998Z","bundle_sha256":"cdb1aa7bf1e26e69d86d3b400e290e18e1038f77d1631e3db218c2b3a5e7ab42"}}