1302.5655 (Johan Comparat et al.)

Stochastic bias of color-selected BAO tracers by joint clustering--weak-lensing analysis    [PDF]

Johan Comparat, Eric Jullo, Jean-Paul Kneib, Carlo Schimd, HuanYuan Shan, T. Erben, Olivier Ilbert, Joel Brownstein, A. Ealet, S. Escoffier, B. Moraes, N. Mostek, J. A. Newman, M. E. S. Pereira, F. Prada, D. Schlegel, Donald P. Schneider, Carlos H. Brandt

The baryon acoustic oscillation (BAO) feature in the two-point correlation function of galaxies supplies a standard ruler to probe the expansion history of the Universe. The current surveys covering a comoving volume sufficient to unveil the BAO scale are limited to a redshift $z \lesssim 1$. We study here several galaxy selection schemes, aiming at building an emission-line-galaxy (ELG) sample in the redshift range $0.61.5$), but we are limited by current data-sets depth to derive precise values of the galaxy bias. A survey using such tracers of the mass field will guarantee a high significance detection of the BAO.

View original: http://arxiv.org/abs/1302.5655