The VIMOS Public Extragalactic Redshift Survey (VIPERS). An unbiased estimate of the growth rate of structure at ⟨z⟩ = 0.85 using the clustering of luminous blue galaxies
- Mohammad, F.G.
- Granett, B.R.
- Guzzo, L.
- Bel, J.
- Branchini, E.
- de La Torre, S.
- Moscardini, L.
- Peacock, J.A.
- Bolzonella, M.
- Garilli, B.
- Scodeggio, M.
- Abbas, U.
- Adami, C.
- Bottini, D.
- Cappi, A.
- Cucciati, O.
- Davidzon, I.
- Franzetti, P.
- Fritz, A.
- Iovino, A.
- Krywult, J.
- Le Brun, V.
- Le Fèvre, O.
- Maccagni, D.
- Małek, K.
- Marulli, F.
- Polletta, M.
- Pollo, A.
- Tasca, L.A. M.
- Tojeiro, R.
- Vergani, D.
- Zanichelli, A.
- Arnouts, S.
- Coupon, J.
- de Lucia, G.
- Ilbert, O.
- Moutard, T.
DOIAbstract
International audienceWe used the VIMOS Public Extragalactic Redshift Survey (VIPERS) final data release (PDR-2) to investigate the performance of colour-selected populations of galaxies as tracers of linear large-scale motions. We empirically selected volume-limited samples of blue and red galaxies as to minimise the systematic error on the estimate of the growth rate of structure fσ8 from the anisotropy of the two-point correlation function. To this end, rather than rigidly splitting the sample into two colour classes we defined the red or blue fractional contribution of each object through a weight based on the (U − V ) colour distribution. Using mock surveys that are designed to reproduce the observed properties of VIPERS galaxies, we f...
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