{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:IFYRRK7Q7HLW2T5CQT7Q67MUTN","short_pith_number":"pith:IFYRRK7Q","schema_version":"1.0","canonical_sha256":"417118abf0f9d76d4fa284ff0f7d949b480e3fd18bd7b931e4e36710570596b7","source":{"kind":"arxiv","id":"2501.08831","version":1},"attestation_state":"computed","paper":{"title":"The post-gas expulsion coalescence of embedded clusters as an origin of open clusters","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"J. W. Zhou, Pavel Kroupa, Sami Dib","submitted_at":"2025-01-15T14:33:28Z","abstract_excerpt":"The mismatch between the mass function of the Milky Way's embedded clusters (ECs) and that of open clusters (OCs) raises the question of whether each OC originates from a single EC. In this work, we explore a scenario in which OCs form as a result of post-gas expulsion coalescence of ECs within the same parental molecular cloud. We model this process using N-body simulations of ECs undergoing expansion due to gas expulsion. Our initial conditions are based on the observed spatial, kinematic, and mass distributions of ECs in three representative massive star-forming regions (MSFRs). Initially, "},"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":"2501.08831","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-15T14:33:28Z","cross_cats_sorted":[],"title_canon_sha256":"d72848905442b487cd9e4e39d68e85884391faab264e6be18e390df2fd31076b","abstract_canon_sha256":"3481fa6b04a3610d06ca00acde80db2d8afe27934a8c87b4779b078c6c49b8b0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:01:26.840967Z","signature_b64":"3Ia6B0eygM+HrxteXRzEoB5+l2h4RpdfE8kW6CPNoNtdZP3gDOS0DSt3KegcIUYgNr79Btlru2qabLqNjYYzBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"417118abf0f9d76d4fa284ff0f7d949b480e3fd18bd7b931e4e36710570596b7","last_reissued_at":"2026-07-05T10:01:26.840514Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:01:26.840514Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The post-gas expulsion coalescence of embedded clusters as an origin of open clusters","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"J. W. Zhou, Pavel Kroupa, Sami Dib","submitted_at":"2025-01-15T14:33:28Z","abstract_excerpt":"The mismatch between the mass function of the Milky Way's embedded clusters (ECs) and that of open clusters (OCs) raises the question of whether each OC originates from a single EC. In this work, we explore a scenario in which OCs form as a result of post-gas expulsion coalescence of ECs within the same parental molecular cloud. We model this process using N-body simulations of ECs undergoing expansion due to gas expulsion. Our initial conditions are based on the observed spatial, kinematic, and mass distributions of ECs in three representative massive star-forming regions (MSFRs). Initially, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.08831","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.08831/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2501.08831","created_at":"2026-07-05T10:01:26.840572+00:00"},{"alias_kind":"arxiv_version","alias_value":"2501.08831v1","created_at":"2026-07-05T10:01:26.840572+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.08831","created_at":"2026-07-05T10:01:26.840572+00:00"},{"alias_kind":"pith_short_12","alias_value":"IFYRRK7Q7HLW","created_at":"2026-07-05T10:01:26.840572+00:00"},{"alias_kind":"pith_short_16","alias_value":"IFYRRK7Q7HLW2T5C","created_at":"2026-07-05T10:01:26.840572+00:00"},{"alias_kind":"pith_short_8","alias_value":"IFYRRK7Q","created_at":"2026-07-05T10:01:26.840572+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/IFYRRK7Q7HLW2T5CQT7Q67MUTN","json":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN.json","graph_json":"https://pith.science/api/pith-number/IFYRRK7Q7HLW2T5CQT7Q67MUTN/graph.json","events_json":"https://pith.science/api/pith-number/IFYRRK7Q7HLW2T5CQT7Q67MUTN/events.json","paper":"https://pith.science/paper/IFYRRK7Q"},"agent_actions":{"view_html":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN","download_json":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN.json","view_paper":"https://pith.science/paper/IFYRRK7Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2501.08831&json=true","fetch_graph":"https://pith.science/api/pith-number/IFYRRK7Q7HLW2T5CQT7Q67MUTN/graph.json","fetch_events":"https://pith.science/api/pith-number/IFYRRK7Q7HLW2T5CQT7Q67MUTN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN/action/storage_attestation","attest_author":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN/action/author_attestation","sign_citation":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN/action/citation_signature","submit_replication":"https://pith.science/pith/IFYRRK7Q7HLW2T5CQT7Q67MUTN/action/replication_record"}},"created_at":"2026-07-05T10:01:26.840572+00:00","updated_at":"2026-07-05T10:01:26.840572+00:00"}