Large groups in the Chile-UK quasar survey
Abstract
The Chile-UK quasar survey, a new-generation 140 deg^2 UVX survey to B = 20, is now \sim 25 per cent complete. The catalogue currently contains 319 quasars and 93 emission line galaxies. Using the minimal-spanning tree method, we have independently confirmed the \sim 200 h^-1 Mpc group of quasars at z \simeq 1.3 discovered by Clowes & Campusano (1991). We have discovered a new \sim 150 h^-1 Mpc group of 13 quasars at median z \simeq 1.51. The null hypothesis of a uniform, random distribution is rejected at a level of significance of 0.003 for both groups.
Keywords
Cite
@article{arxiv.astro-ph/9710281,
title = {Large groups in the Chile-UK quasar survey},
author = {Peter R. Newman and Roger G. Clowes and Luis E. Campusano and Matthew J. Graham},
journal= {arXiv preprint arXiv:astro-ph/9710281},
year = {2007}
}
Comments
2 pages including 2 figures, Latex, sprocl.sty and psfig.sty included. To appear in proceedings of the 12th Potsdam Cosmology Workshop 1997. Larger versions of the figures are available from [email protected]