{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:PQ33UWZRMJIC2EOGON7KB6FF5I","short_pith_number":"pith:PQ33UWZR","schema_version":"1.0","canonical_sha256":"7c37ba5b3162502d11c6737ea0f8a5ea0851821968ab311b388a7d1c931ff06b","source":{"kind":"arxiv","id":"1103.0406","version":1},"attestation_state":"computed","paper":{"title":"Rapid dynamical mass segregation and properties of fractal star clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jincheng Yu, Li Chen, Richard de Grijs","submitted_at":"2011-03-02T12:11:46Z","abstract_excerpt":"We investigate the evolution of young star clusters using N-body simulations. We confirm that subvirial and fractal-structured clusters will dynamically mass segregate on a short timescale (within 0.5 Myr). We adopt a modified minimum-spanning-tree (MST) method to measure the degree of mass segregation, demonstrating that the stars escaping from a cluster's potential are important for the temporal dependence of mass segregation in the cluster. The form of the initial velocity distribution will also affect the degree of mass segregation. If it depends on radius, the outer parts of the cluster w"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1103.0406","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-03-02T12:11:46Z","cross_cats_sorted":[],"title_canon_sha256":"d24679ca21425ba5684f0c3a57f4f1275e529fcf4a8376789bfba108b370a642","abstract_canon_sha256":"b4845699722296a282740b1a7acfc2814be62cc849794cee4e67e23ad91835df"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:01.139335Z","signature_b64":"5by40qgQtIso37SxXIJ13diRage0JDdoe/BfWoL80mt89qL1zAms5Ge2uR8/T+NVHhKjzEVpXwYExphPgKw5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c37ba5b3162502d11c6737ea0f8a5ea0851821968ab311b388a7d1c931ff06b","last_reissued_at":"2026-05-18T02:03:01.138611Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:01.138611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Rapid dynamical mass segregation and properties of fractal star clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jincheng Yu, Li Chen, Richard de Grijs","submitted_at":"2011-03-02T12:11:46Z","abstract_excerpt":"We investigate the evolution of young star clusters using N-body simulations. We confirm that subvirial and fractal-structured clusters will dynamically mass segregate on a short timescale (within 0.5 Myr). We adopt a modified minimum-spanning-tree (MST) method to measure the degree of mass segregation, demonstrating that the stars escaping from a cluster's potential are important for the temporal dependence of mass segregation in the cluster. The form of the initial velocity distribution will also affect the degree of mass segregation. If it depends on radius, the outer parts of the cluster w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0406","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1103.0406","created_at":"2026-05-18T02:03:01.138710+00:00"},{"alias_kind":"arxiv_version","alias_value":"1103.0406v1","created_at":"2026-05-18T02:03:01.138710+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0406","created_at":"2026-05-18T02:03:01.138710+00:00"},{"alias_kind":"pith_short_12","alias_value":"PQ33UWZRMJIC","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_16","alias_value":"PQ33UWZRMJIC2EOG","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_8","alias_value":"PQ33UWZR","created_at":"2026-05-18T12:26:39.201973+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I","json":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I.json","graph_json":"https://pith.science/api/pith-number/PQ33UWZRMJIC2EOGON7KB6FF5I/graph.json","events_json":"https://pith.science/api/pith-number/PQ33UWZRMJIC2EOGON7KB6FF5I/events.json","paper":"https://pith.science/paper/PQ33UWZR"},"agent_actions":{"view_html":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I","download_json":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I.json","view_paper":"https://pith.science/paper/PQ33UWZR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1103.0406&json=true","fetch_graph":"https://pith.science/api/pith-number/PQ33UWZRMJIC2EOGON7KB6FF5I/graph.json","fetch_events":"https://pith.science/api/pith-number/PQ33UWZRMJIC2EOGON7KB6FF5I/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I/action/storage_attestation","attest_author":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I/action/author_attestation","sign_citation":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I/action/citation_signature","submit_replication":"https://pith.science/pith/PQ33UWZRMJIC2EOGON7KB6FF5I/action/replication_record"}},"created_at":"2026-05-18T02:03:01.138710+00:00","updated_at":"2026-05-18T02:03:01.138710+00:00"}