{"paper":{"title":"The 2dF Galaxy Redshift Survey: the luminosity function of cluster galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Peterson, C. Baugh, C. Collins, C. Jackson, C. S. Frenk, D. S. Madgwick, E. Hawkins, G. B. Dalton, G. Efstathiou, I. Baldry, I. Lewis, J. Bland-Hawthorn, J. Peacock, K. Glazebrook, K. Taylor, M. Colless, N. Cross, O. Lahav, P. Norberg, R. Cannon, Roberto De Propris, R. S. Ellis, S. Cole, S. Driver, S. Lumsden, S. Maddox, T. Bridges, W. Couch, W. Percival, W. Sutherland","submitted_at":"2002-12-30T01:24:33Z","abstract_excerpt":"We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range $-22.5<M_{b_{\\rm J}}<-15$, and is well-fitted by a Schechter function with ${M_{b_{\\rm J}}}^{*}=-20.07\\pm0.07$ and $\\alpha=-1.28\\pm0.03$ ($H_0$=100 km s$^{-1}$ Mpc$^{-1}$, $\\Omega_M$=0.3, $\\Omega_\\Lambda$=0.7). It differs significantly from the field LF of \\cite{mad02}, having a characteristic magnitude that is approximately 0.3 mag brighter and a faint-end slope that is approximately 0.1 steeper. There is no evidence for variations in the LF across "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0212562","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"}