TY - JOUR
T1 - Investigating emission-line galaxy surveys with the Sloan Digital Sky Survey infrastructure
AU - Comparat, Johan
AU - Kneib, Jean-Paul
AU - Escoffier, Stephanie
AU - Zoubian, Julien
AU - Ealet, Anne
AU - Lamareille, Fabrice
AU - Mostek, N.
AU - Steele, Oliver
AU - Aubourg, Eric
AU - Bailey, Stephen
AU - Bolton, Adam S.
AU - Brownstein, Joel
AU - Dawson, Kyle
AU - Ge, Jian
AU - Ilbert, Olivier
AU - Leauthaud, Alexie
AU - Maraston, Claudia
AU - Percival, Will
AU - Ross, Nicholas P.
AU - Schimd, Carlo
AU - Schlegel, David J.
AU - Schneider, Donald P.
AU - Thomas, Daniel
AU - Tinker, Jeremy L.
AU - Weaver, Benjamin A.
PY - 2013/1/11
Y1 - 2013/1/11
N2 - The baryon acoustic oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to probe the accelerated expansion of the Universe. The current surveys covering a comoving volume sufficient to unveil the BAO scale are limited to redshift z ≲ 0.7. In this paper, we study several galaxy selection schemes aiming at building an emission-line galaxy (ELG) sample in the redshift range 0.6 < z < 1.7 that would be suitable for future BAO studies using the Baryonic Oscillation Spectroscopic Survey (BOSS) spectrograph on the Sloan Digital Sky Survey (SDSS) telescope. We explore two different colour selections using both the SDSS and the Canada–France–Hawaii Telescope Legacy Survey (CFHT-LS) photometry in the u, g, r and i bands and evaluate their performance selecting luminous ELGs. From about 2000 ELGs, we identified a selection scheme that has a 75 per cent redshift measurement efficiency. This result confirms the feasibility of massive ELG surveys using the BOSS spectrograph on the SDSS telescope for a BAO detection at z ∼ 1, in particular the proposed eBOSS experiment, which plans to use the SDSS telescope to combine the use of the BAO ruler with redshift space distortions using ELGs and quasars in the redshift range 0.6 < z < 2.2.
AB - The baryon acoustic oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to probe the accelerated expansion of the Universe. The current surveys covering a comoving volume sufficient to unveil the BAO scale are limited to redshift z ≲ 0.7. In this paper, we study several galaxy selection schemes aiming at building an emission-line galaxy (ELG) sample in the redshift range 0.6 < z < 1.7 that would be suitable for future BAO studies using the Baryonic Oscillation Spectroscopic Survey (BOSS) spectrograph on the Sloan Digital Sky Survey (SDSS) telescope. We explore two different colour selections using both the SDSS and the Canada–France–Hawaii Telescope Legacy Survey (CFHT-LS) photometry in the u, g, r and i bands and evaluate their performance selecting luminous ELGs. From about 2000 ELGs, we identified a selection scheme that has a 75 per cent redshift measurement efficiency. This result confirms the feasibility of massive ELG surveys using the BOSS spectrograph on the SDSS telescope for a BAO detection at z ∼ 1, in particular the proposed eBOSS experiment, which plans to use the SDSS telescope to combine the use of the BAO ruler with redshift space distortions using ELGs and quasars in the redshift range 0.6 < z < 2.2.
KW - cosmology: observations
KW - large-scale structure of Universe
KW - galaxies: abundances
U2 - 10.1093/mnras/sts127
DO - 10.1093/mnras/sts127
M3 - Article
SN - 0035-8711
VL - 428
SP - 1498
EP - 1517
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -