{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:U23TE2XZVOI2MQFENPI55NGOIY","short_pith_number":"pith:U23TE2XZ","schema_version":"1.0","canonical_sha256":"a6b7326af9ab91a640a46bd1deb4ce463a1518ae074103116d1c67f0e7a8aaa8","source":{"kind":"arxiv","id":"1301.4227","version":1},"attestation_state":"computed","paper":{"title":"Impact of metallicity on the evolution of young star clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Bressan, M. Mapelli","submitted_at":"2013-01-17T21:00:30Z","abstract_excerpt":"We discuss the results of N-body simulations of intermediate-mass young star clusters (SCs) with three different metallicities (Z=0.01, 0.1 and 1 Zsun), including metallicity-dependent stellar evolution recipes and metallicity-dependent prescriptions for stellar winds and remnant formation. The initial half-mass relaxation time of the simulated young SCs (~10 Myr) is comparable to the lifetime of massive stars. We show that mass-loss by stellar winds influences the reversal of core collapse and the expansion of the half-mass radius. In particular, the post-collapse re-expansion of the core is "},"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":"1301.4227","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-01-17T21:00:30Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"11018ac629c3220b17337b16b0aede972581c9120b51f3bec6db8b8c42886520","abstract_canon_sha256":"4c5e5d25cdcf595bf824e339f7530db75da75d44bde559ae12335382e9772ea6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:06.087499Z","signature_b64":"yDXq8UVT7h8Exa7s9WFqWmcgCM6+SJ96vYgSU/pkj2Ti1TaH4qL/cdr/4dT/Q3zZbbJpgPVsPQ/UolfVRBi4AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6b7326af9ab91a640a46bd1deb4ce463a1518ae074103116d1c67f0e7a8aaa8","last_reissued_at":"2026-05-18T01:52:06.087117Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:06.087117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Impact of metallicity on the evolution of young star clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Bressan, M. Mapelli","submitted_at":"2013-01-17T21:00:30Z","abstract_excerpt":"We discuss the results of N-body simulations of intermediate-mass young star clusters (SCs) with three different metallicities (Z=0.01, 0.1 and 1 Zsun), including metallicity-dependent stellar evolution recipes and metallicity-dependent prescriptions for stellar winds and remnant formation. The initial half-mass relaxation time of the simulated young SCs (~10 Myr) is comparable to the lifetime of massive stars. We show that mass-loss by stellar winds influences the reversal of core collapse and the expansion of the half-mass radius. In particular, the post-collapse re-expansion of the core is "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4227","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":"1301.4227","created_at":"2026-05-18T01:52:06.087180+00:00"},{"alias_kind":"arxiv_version","alias_value":"1301.4227v1","created_at":"2026-05-18T01:52:06.087180+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4227","created_at":"2026-05-18T01:52:06.087180+00:00"},{"alias_kind":"pith_short_12","alias_value":"U23TE2XZVOI2","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_16","alias_value":"U23TE2XZVOI2MQFE","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_8","alias_value":"U23TE2XZ","created_at":"2026-05-18T12:28:02.375192+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/U23TE2XZVOI2MQFENPI55NGOIY","json":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY.json","graph_json":"https://pith.science/api/pith-number/U23TE2XZVOI2MQFENPI55NGOIY/graph.json","events_json":"https://pith.science/api/pith-number/U23TE2XZVOI2MQFENPI55NGOIY/events.json","paper":"https://pith.science/paper/U23TE2XZ"},"agent_actions":{"view_html":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY","download_json":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY.json","view_paper":"https://pith.science/paper/U23TE2XZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1301.4227&json=true","fetch_graph":"https://pith.science/api/pith-number/U23TE2XZVOI2MQFENPI55NGOIY/graph.json","fetch_events":"https://pith.science/api/pith-number/U23TE2XZVOI2MQFENPI55NGOIY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY/action/storage_attestation","attest_author":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY/action/author_attestation","sign_citation":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY/action/citation_signature","submit_replication":"https://pith.science/pith/U23TE2XZVOI2MQFENPI55NGOIY/action/replication_record"}},"created_at":"2026-05-18T01:52:06.087180+00:00","updated_at":"2026-05-18T01:52:06.087180+00:00"}