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

J. Comparat (1) , E. Jullo (1) , J.-P. Kneib (1) , C. Schimd (1) , H. Shan , T. Erben , O. Ilbert (1) , J. Brownstein , A. Ealet (2) , S. Escoffier (2) , B. Moraes , N. Mostek , J. A. Newman , M. E. S. Pereira , F. Prada , D. Schlegel , D. P. Schneider , C. H. Brandt

1 LAM - Laboratoire d'Astrophysique de Marseille
2 CPPM - Centre de Physique des Particules de Marseille

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. 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.

Mots clés: galaxies: statistics; cosmology: observations; dark matter; large-scale structure of Universe; galaxies: evolution; galaxies: haloes

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Cosmologie et astrophysique extra-galactique [astro-ph.CO]

J. Comparat, E. Jullo, J.-P. Kneib, C. Schimd, H. Shan, et al.. Stochastic bias of color-selected BAO tracers by joint clustering--weak-lensing analysis. Monthly Notices of the Royal Astronomical Society, 2013, 433, pp.1146-1160. ⟨10.1093/mnras/stt797⟩. ⟨in2p3-00865316⟩