{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:W4MXEVDCNS6AD6336I2KPOCLR7","short_pith_number":"pith:W4MXEVDC","schema_version":"1.0","canonical_sha256":"b7197254626cbc01fb7bf234a7b84b8ff0ee3178a763bb10c49d1c80b609ba14","source":{"kind":"arxiv","id":"2304.08898","version":1},"attestation_state":"computed","paper":{"title":"Galaxy pairs in The Three Hundred simulations II: studying bound ones and identifying them via machine learning","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander Knebe, Ana Contreras-Santos, Frazer Pearce, Gustavo Yepes, Marco De Petris, Meghan Gray, Roan Haggar, Weiguang Cui","submitted_at":"2023-04-18T10:58:25Z","abstract_excerpt":"Using the data set of The Three Hundred project, i.e. 324 hydrodynamical resimulations of cluster-sized haloes and the regions of radius 15 $h^{-1}$Mpc around them, we study galaxy pairs in high-density environments. By projecting the galaxies' 3D coordinates onto a 2D plane, we apply observational techniques to find galaxy pairs. Based on a previous theoretical study on galaxy groups in the same simulations, we are able to classify the observed pairs into \"true\" or \"false\", depending on whether they are gravitationally bound or not. We find that the fraction of true pairs (purity) crucially d"},"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":"2304.08898","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-04-18T10:58:25Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0821717a92cf5503a37b9449d83973e760fde1e47658048235c1132b3356e118","abstract_canon_sha256":"40762d3abf8360fc5f066ee4af8d44647b2bd8615c06fbdc0071c0ef2419816a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:02:14.949797Z","signature_b64":"Kqvm93Z1SbjLctH6JaW6ibXm80Cps72wh0wUaGhrf7o96ZeqJj9mojvlhAUgPNru1xjxHMEYSJaYr1CjYXr1DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7197254626cbc01fb7bf234a7b84b8ff0ee3178a763bb10c49d1c80b609ba14","last_reissued_at":"2026-07-05T06:02:14.949474Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:02:14.949474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Galaxy pairs in The Three Hundred simulations II: studying bound ones and identifying them via machine learning","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander Knebe, Ana Contreras-Santos, Frazer Pearce, Gustavo Yepes, Marco De Petris, Meghan Gray, Roan Haggar, Weiguang Cui","submitted_at":"2023-04-18T10:58:25Z","abstract_excerpt":"Using the data set of The Three Hundred project, i.e. 324 hydrodynamical resimulations of cluster-sized haloes and the regions of radius 15 $h^{-1}$Mpc around them, we study galaxy pairs in high-density environments. By projecting the galaxies' 3D coordinates onto a 2D plane, we apply observational techniques to find galaxy pairs. Based on a previous theoretical study on galaxy groups in the same simulations, we are able to classify the observed pairs into \"true\" or \"false\", depending on whether they are gravitationally bound or not. We find that the fraction of true pairs (purity) crucially d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.08898","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/2304.08898/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":"2304.08898","created_at":"2026-07-05T06:02:14.949522+00:00"},{"alias_kind":"arxiv_version","alias_value":"2304.08898v1","created_at":"2026-07-05T06:02:14.949522+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.08898","created_at":"2026-07-05T06:02:14.949522+00:00"},{"alias_kind":"pith_short_12","alias_value":"W4MXEVDCNS6A","created_at":"2026-07-05T06:02:14.949522+00:00"},{"alias_kind":"pith_short_16","alias_value":"W4MXEVDCNS6AD633","created_at":"2026-07-05T06:02:14.949522+00:00"},{"alias_kind":"pith_short_8","alias_value":"W4MXEVDC","created_at":"2026-07-05T06:02:14.949522+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/W4MXEVDCNS6AD6336I2KPOCLR7","json":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7.json","graph_json":"https://pith.science/api/pith-number/W4MXEVDCNS6AD6336I2KPOCLR7/graph.json","events_json":"https://pith.science/api/pith-number/W4MXEVDCNS6AD6336I2KPOCLR7/events.json","paper":"https://pith.science/paper/W4MXEVDC"},"agent_actions":{"view_html":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7","download_json":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7.json","view_paper":"https://pith.science/paper/W4MXEVDC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2304.08898&json=true","fetch_graph":"https://pith.science/api/pith-number/W4MXEVDCNS6AD6336I2KPOCLR7/graph.json","fetch_events":"https://pith.science/api/pith-number/W4MXEVDCNS6AD6336I2KPOCLR7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7/action/storage_attestation","attest_author":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7/action/author_attestation","sign_citation":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7/action/citation_signature","submit_replication":"https://pith.science/pith/W4MXEVDCNS6AD6336I2KPOCLR7/action/replication_record"}},"created_at":"2026-07-05T06:02:14.949522+00:00","updated_at":"2026-07-05T06:02:14.949522+00:00"}