The 2dF Galaxy Redshift Survey: the blue galaxy fraction and implications for the Butcher-Oemler effect

The 2dF galaxy redshift survey: The blue galaxy fraction and implications for the Butcher-Oemler effect حسب De Propris, R, Colless, M, Peacock, J, Couch, W, Driver, S, Balogh, M, Baldry, I, Baugh, C, Bland-Hawthorn, J, Bridges, T, Cannon, R, Cole, S, Collins, C, Cross, N, Dalton, G, Efstathiou, G, Ellis, R, Frenk, C, Glazebrook, K, Hawkins, E, Jackson, C, Lahav, O, Lewis, I, Lumsden, S, Maddox, S