Issue |
A&A
Volume 583, November 2015
|
|
---|---|---|
Article Number | A61 | |
Number of page(s) | 16 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361/201526330 | |
Published online | 28 October 2015 |
The VIMOS Public Extragalactic Redshift Survey
Reconstruction of the redshift-space galaxy density field⋆
1
INAF–Osservatorio Astronomico di Brera,
via Brera 28, 20122 Milano, via E. Bianchi
46, 23807
Merate,
Italy
2
Dipartimento di Matematica e Fisica, Università degli Studi Roma
Tre, via della Vasca Navale
84, 00146
Roma,
Italy
3
INFN, Sezione di Roma Tre, via della Vasca Navale 84, 00146
Roma,
Italy
4
INAF–Osservatorio Astronomico di Roma,
via Frascati 33, 00040
Monte Porzio Catone (RM),
Italy
5
Dipartimento di Fisica, Università di
Milano-Bicocca, Piazza della Scienza
3, 20126
Milano,
Italy
6
INAF–Osservatorio Astronomico di Torino,
10025
Pino Torinese,
Italy
7
Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique
de Marseille) UMR 7326, 13388
Marseille,
France
8
Canada-France-Hawaii Telescope, 65–1238 Mamalahoa Highway, Kamuela, HI
96743,
USA
9
INAF–Osservatorio Astronomico di Bologna, via Ranzani
1, 40127
Bologna,
Italy
10
INAF–Istituto di Astrofisica Spaziale e Fisica Cosmica
Milano, via Bassini
15, 20133
Milano,
Italy
11
Laboratoire Lagrange, UMR 7293, Université de Nice Sophia
Antipolis, CNRS, Observatoire de la Côte d’Azur, 06300
Nice,
France
12
Astronomical Observatory of the University of
Geneva, ch. d’Ecogia
16, 1290
Versoix,
Switzerland
13
Dipartimento di Fisica e Astronomia–Alma Mater Studiorum
Università di Bologna, viale Berti
Pichat 6/2, 40127
Bologna,
Italy
14
INAF–Osservatorio Astronomico di Trieste,
via G. B. Tiepolo 11,
34143
Trieste,
Italy
15
Institute of Physics, Jan Kochanowski University,
ul. Swietokrzyska 15,
25-406
Kielce,
Poland
16
National Centre for Nuclear Research, ul. Hoza 69,
00-681
Warszawa,
Poland
17
INFN, Sezione di Bologna, viale Berti Pichat 6/2,
40127
Bologna,
Italy
18
Institute d’Astrophysique de Paris, UMR 7095 CNRS, Université
Pierre et Marie Curie, 98 bis
boulevard Arago, 75014
Paris,
France
19
Astronomical Observatory of the Jagiellonian
University, Orla
171, 30-001
Cracow,
Poland
20
School of Physics and Astronomy, University of St.
Andrews, North
Haugh, St Andrews
KY16 9SS,
UK
21
INAF–Istituto di Astrofisica Spaziale e Fisica Cosmica
Bologna, via Gobetti
101, 40129
Bologna,
Italy
22
INAF–Istituto di Radioastronomia, via Gobetti 101, 40129
Bologna,
Italy
23
Institute of Cosmology and Gravitation, Dennis Sciama Building,
University of Portsmouth, Burnaby
Road, Portsmouth,
PO1 3FX, UK
24
Centre de Physique Théorique, UMR 6207 CNRS-Université de
Provence, Case 907,
13288
Marseille,
France
25
SUPA, Institute for Astronomy, University of Edinburgh, Royal
Observatory, Blackford
Hill, Edinburgh
EH9 3HJ,
UK
Received: 16 April 2015
Accepted: 19 June 2015
Aims. Using the VIMOS Public Extragalactic Redshift Survey (VIPERS) we aim to jointly estimate the keyparameters that describe the galaxy density field and its spatial correlations in redshift space.
Methods. We use the Bayesian formalism to jointly reconstruct the redshift-space galaxy density field, power spectrum, galaxy bias and galaxy luminosity function given the observations and survey selection function. The high-dimensional posterior distribution is explored using the Wiener filter within a Gibbs sampler. We validate the analysis using simulated catalogues and apply it to VIPERS data taking into consideration the inhomogeneous selection function.
Results. We present joint constraints on the anisotropic power spectrum, and the bias and number density of red and blue galaxy classes in luminosity and redshift bins as well as the measurement covariances of these quantities. We find that the inferred galaxy bias and number density parameters are strongly correlated although they are only weakly correlated with the galaxy power spectrum. The power spectrum and redshift-space distortion parameters are in agreement with previous VIPERS results with the value of the growth rate fσ8 = 0.38 with 18% uncertainty at redshift 0.7.
Key words: large-scale structure of Universe / cosmology: observations / galaxies: statistics / cosmological parameters / methods: statistical / methods: data analysis
Appendices are available in electronic form at http://www.aanda.org
© ESO, 2015
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