{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:433W32PDAOGD4L3HFML2P3Z4BR","short_pith_number":"pith:433W32PD","schema_version":"1.0","canonical_sha256":"e6f76de9e3038c3e2f672b17a7ef3c0c693797847a6c4077bd06059b256122e8","source":{"kind":"arxiv","id":"0804.4177","version":1},"attestation_state":"computed","paper":{"title":"Star formation in galaxies falling into clusters along supercluster-scale filaments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Australia), Kevin A. Pimbblet, Michael J. Drinkwater (U. Queensland, Scott C. Porter, Somak Raychaudhury (U. Birmingham, UK)","submitted_at":"2008-04-25T20:05:24Z","abstract_excerpt":"With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely to undergo a sudden enhancement before the galaxy reaches the virial radius of the cluster. From a sample of 52 supercluster-scale filaments of galaxies joining a pair of rich clusters of galaxies within the two-degree Field Redshift Survey region, we find a significant enhancement of star formation, within a narrow range between 2-3 h/70 Mpc of the centre of the cluster into which the galaxy is falling."},"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":"0804.4177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-25T20:05:24Z","cross_cats_sorted":[],"title_canon_sha256":"2f0ce675029a902a07dd9abe0577e81b51447e6853d982dcfbe7edbd99974a09","abstract_canon_sha256":"3dca63d961254ae09ed6ccb7ed816e6dff1d5a16f9d766145fe50b1e78a1151d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:10:31.017387Z","signature_b64":"KvIr34MfsPMc0EsI9eDsmLKxFVInQBU0lACQdVVQ75v6gfaTzJvcKfHXX65XO7cYEj0giKxMBfW/UnuXnAQuBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6f76de9e3038c3e2f672b17a7ef3c0c693797847a6c4077bd06059b256122e8","last_reissued_at":"2026-07-04T17:10:31.017029Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:10:31.017029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Star formation in galaxies falling into clusters along supercluster-scale filaments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Australia), Kevin A. Pimbblet, Michael J. Drinkwater (U. Queensland, Scott C. Porter, Somak Raychaudhury (U. Birmingham, UK)","submitted_at":"2008-04-25T20:05:24Z","abstract_excerpt":"With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely to undergo a sudden enhancement before the galaxy reaches the virial radius of the cluster. From a sample of 52 supercluster-scale filaments of galaxies joining a pair of rich clusters of galaxies within the two-degree Field Redshift Survey region, we find a significant enhancement of star formation, within a narrow range between 2-3 h/70 Mpc of the centre of the cluster into which the galaxy is falling."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.4177","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/0804.4177/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":"0804.4177","created_at":"2026-07-04T17:10:31.017082+00:00"},{"alias_kind":"arxiv_version","alias_value":"0804.4177v1","created_at":"2026-07-04T17:10:31.017082+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0804.4177","created_at":"2026-07-04T17:10:31.017082+00:00"},{"alias_kind":"pith_short_12","alias_value":"433W32PDAOGD","created_at":"2026-07-04T17:10:31.017082+00:00"},{"alias_kind":"pith_short_16","alias_value":"433W32PDAOGD4L3H","created_at":"2026-07-04T17:10:31.017082+00:00"},{"alias_kind":"pith_short_8","alias_value":"433W32PD","created_at":"2026-07-04T17:10:31.017082+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/433W32PDAOGD4L3HFML2P3Z4BR","json":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR.json","graph_json":"https://pith.science/api/pith-number/433W32PDAOGD4L3HFML2P3Z4BR/graph.json","events_json":"https://pith.science/api/pith-number/433W32PDAOGD4L3HFML2P3Z4BR/events.json","paper":"https://pith.science/paper/433W32PD"},"agent_actions":{"view_html":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR","download_json":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR.json","view_paper":"https://pith.science/paper/433W32PD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0804.4177&json=true","fetch_graph":"https://pith.science/api/pith-number/433W32PDAOGD4L3HFML2P3Z4BR/graph.json","fetch_events":"https://pith.science/api/pith-number/433W32PDAOGD4L3HFML2P3Z4BR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR/action/storage_attestation","attest_author":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR/action/author_attestation","sign_citation":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR/action/citation_signature","submit_replication":"https://pith.science/pith/433W32PDAOGD4L3HFML2P3Z4BR/action/replication_record"}},"created_at":"2026-07-04T17:10:31.017082+00:00","updated_at":"2026-07-04T17:10:31.017082+00:00"}