{"paper":{"title":"Substructure Analysis of Selected Low Richness 2dFGRS Clusters of Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Bruce Peterson, Carlos Frenk, Carlton Baugh, Carole Jackson, Chris Collins, Darren Madgwick, David S. Davis, Edward Hawkins, Gavin Dalton, George Efstathiou, Ian Lewis, Ivan Baldry, John A. Peacock, Joss Bland-Hawthorn, Karl Glazebrook, Keith Taylor, Matthew Colless, Michael M. Vick, Nicholas Cross, Ofer Lahav, Peder Norberg, Richard Ellis, Roberto De Propris, Russell Cannon, Shaun Cole, Simon Driver, Steve Maddox, Stuart Lumsden, Terry Bridges, Warrick Couch, William S. Burgett, Will Percival, Will Sutherland","submitted_at":"2004-05-03T12:54:26Z","abstract_excerpt":"Complementary one-, two-, and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy Redshift Survey. The sample of 25 clusters used in this study includes 16 clusters not previously investigated for substructure. Substructure is detected at or greater than the 99% CL level in at least one test for 21 of the 25 clusters studied here. From the results, it appears that low richness clusters commonly contain subclusters participating in mergers. About half of the clusters have two or more components with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0405021","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"}