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The power spectrum from the angular distribution of galaxies in the CFHTLS-Wide fields at redshift ~0.7

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Date
21/03/2012
Author
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.
Keywords
Methods: statistical
Cosmology: observations
Large-scale structure of Universe
QB Astronomy
QC Physics
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Abstract
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.
Citation
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
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
DOI
https://doi.org/10.1111/j.1365-2966.2011.20297.x
ISSN
0035-8711
Type
Journal article
Rights
© 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
Collections
  • Physics & Astronomy Research
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/16242

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