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Title: | The VIMOS Public Extragalactic Redshift Survey. Reconstruction of the redshift-space galaxy density field | Authors: | Granett, B. R. Branchini, E. Guzzo, L. ABBAS, Ummi Adami, C. Arnouts, S. Bel, J. BOLZONELLA, MICOL BOTTINI, DARIO CAPPI, Alberto Coupon, J. CUCCIATI, Olga Davidzon, I. DE LUCIA, GABRIELLA de la Torre, S. Fritz, A. FRANZETTI, PAOLO FUMANA, Marco GARILLI, BIANCA MARIA ROSA Ilbert, O. IOVINO, Angela Krywult, J. Le Brun, V. Le Fèvre, O. Maccagni, D. Małek, K. Marulli, F. McCracken, H. J. POLLETTA, MARIA DEL CARMEN Pollo, A. SCODEGGIO, MARCO Tasca, L. A. M. Tojeiro, R. VERGANI, DANIELA ZANICHELLI, Alessandra Burden, A. Di Porto, C. Marchetti, A. Marinoni, C. Mellier, Y. Moutard, T. Moscardini, L. Nichol, R. C. Peacock, J. A. Percival, W. J. Zamorani, G. |
Issue Date: | 2015 | Journal: | ASTRONOMY & ASTROPHYSICS | Number: | 583 | First Page: | A61 | Abstract: | 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 fσ<SUB>8</SUB> = 0.38 with 18% uncertainty at redshift 0.7. <P />Appendices are available in electronic form at <A href="http://www.aanda.org/10.1051/0004-6361/201526330/olm">http://www.aanda.org | Acknowledgments: | This work is based on observations collected at the European Southern Observatory, Cerro Paranal, Chile, using the Very Large Telescope under programs 182.A-0886 and partly 070.A-9007. Also based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences de l’Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. The VIPERS web site is http://www.vipers.inaf.it/ . We acknowledge the crucial contribution of the ESO staff for the management of service observations. In particular, we are deeply grateful to M. Hilker for his constant help and support of this program. Italian participation to VIPERS has been funded by INAF through PRIN 2008 and 2010 programs. L.G., and B.R.G. acknowledge support of the European Research Council through the Darklight ERC Advanced Research Grant (# 291521). A.P., K.M., and J.K. have been supported by the National Science Centre (grants UMO-2012/07/B/ST9/04425 and UMO-2013/09/D/ST9/04030), the Polish-Swiss Astro Project (co-financed by a grant from Switzerland, through the Swiss Contribution to the enlarged European Union), and the European Associated Laboratory Astrophysics Poland-France HECOLS. K.M. was supported by the Strategic Young Researcher Overseas Visits Program for Accelerating Brain Circulation (# R2405). O.L.F. acknowledges support of the European Research Council through the EARLY ERC Advanced Research Grant (# 268107). G.D.L. acknowledges financial support from the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement # 202781. W.J.P. and R.T. acknowledge financial support from the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement # 202686. W.J.P. is also grateful for support from the UK Science and Technology Facilities Council through the grant ST/I001204/1. E.B., F.M. and L.M. acknowledge the support from grants ASI-INAF I/023/12/0 and PRIN MIUR 2010-2011. L.M. also acknowledges financial support from PRIN INAF 2012. Y.M. acknowledges support from CNRS/INSU (Institut National des Sciences de l’Univers) and the Programme National Galaxies et Cosmologie (PNCG). C.M. is grateful for support from specific project funding of the Institut Universitaire de France and the LABEX OCEVU. | URI: | http://hdl.handle.net/20.500.12386/23231 | URL: | https://www.aanda.org/articles/aa/abs/2015/11/aa26330-15/aa26330-15.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201526330 | Bibcode ADS: | 2015A&A...583A..61G | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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