The power spectrum from the angular distribution of galaxies in the CFHTLS-Wide fields at redshift ~0.7
MetadataShow full item record
We measure the real-space galaxy power spectrum on large scales at redshifts 0.5–1.2 using optical colour selected samples from the Canada–France–Hawaii Telescope Legacy Survey. With the redshift distributions measured with a preliminary ∼14 000 spectroscopic redshifts from the VIMOS Public Extragalactic Redshift Survey (VIPERS), we deproject the angular distribution and directly estimate the three-dimensional power spectrum. We use a maximum likelihood estimator that is optimal for a Gaussian random field giving well-defined window functions and error estimates. This measurement presents an initial look at the large-scale structure field probed by the VIPERS. We measure the galaxy bias of the VIPERS-like sample to be bg= 1.38 ± 0.05 (σ8= 0.8) on scales k < 0.2 h Mpc−1 averaged over 0.5 < z < 1.2. We further investigate three photometric redshift slices, and marginalizing over the bias factors while keeping other Λ cold dark matter parameters fixed, we find the matter density Ωm= 0.30 ± 0.06.
Granett , B R , Guzzo , L , Coupon , J , Arnouts , S , Hudelot , P , Ilbert , O , McCracken , H J , Mellier , Y , Adami , C , Bel , J , Bolzonella , M , Bottini , D , Cappi , A , Cucciati , O , de la Torre , S , Franzetti , P , Fritz , A , Garilli , B , Iovino , A , Krywult , J , Le Brun , V , Le Fevre , O , Maccagni , D , Malek , K , Marulli , F , Meneux , B , Paioro , L , Polletta , M , Pollo , A , Scodeggio , M , Schlagenhaufer , H , Tasca , L , Tojeiro , R , Vergani , D & Zanichelli , A 2012 , ' The power spectrum from the angular distribution of galaxies in the CFHTLS-Wide fields at redshift ~0.7 ' , Monthly Notices of the Royal Astronomical Society , vol. 421 , no. 1 , pp. 251-261 . https://doi.org/10.1111/j.1365-2966.2011.20297.x
Monthly Notices of the Royal Astronomical Society
© 2012 The Authors, Monthly Notices of the Royal Astronomical Society © 2012 RAS. This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://doi.org/10.1111/j.1365-2966.2011.20297.x
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.