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

Authors

  • B. R. Granett,

    Corresponding author
    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Via E. Bianchi 46, 23807 Merate, Italy
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  • L. Guzzo,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Via E. Bianchi 46, 23807 Merate, Italy
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  • J. Coupon,

    1. Astronomical Institute, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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  • S. Arnouts,

    1. Canada–France–Hawaii Telescope, 65-1238 Mamalahoa Highway, Kamuela, HI 96743, USA
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  • P. Hudelot,

    1. Institute d’astrophysic de Paris, UMR7095 CNRS, Universitè Pierre et Marie Curie, 98 bis Boulevard Arago, 75014 Paris, France
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  • O. Ilbert,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
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  • H. J. McCracken,

    1. Institute d’astrophysic de Paris, UMR7095 CNRS, Universitè Pierre et Marie Curie, 98 bis Boulevard Arago, 75014 Paris, France
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  • Y. Mellier,

    1. Institute d’astrophysic de Paris, UMR7095 CNRS, Universitè Pierre et Marie Curie, 98 bis Boulevard Arago, 75014 Paris, France
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  • C. Adami,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
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  • J. Bel,

    1. Centre de Physique Théorique, UMR 6207 CNRS-Université de Provence, Case 907, F-13288 Marseille, France
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  • M. Bolzonella,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
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  • D. Bottini,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • A. Cappi,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
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  • O. Cucciati,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, 34143 Trieste, Italy
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  • S. de la Torre,

    1. SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
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  • P. Franzetti,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • A. Fritz,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • B. Garilli,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
    2. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • A. Iovino,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Via E. Bianchi 46, 23807 Merate, Italy
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  • J. Krywult,

    1. Institute of Physics, Jan Kochanowski University, ul. Swietokrzyska 15, 25-406 Kielce, Poland
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  • V. Le Brun,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
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  • O. Le Fevre,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
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  • D. Maccagni,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • K. Malek,

    1. Center for Theoretical Physics PAS Al. Lotnikow 32/46 02-668 Warsaw, Poland
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  • F. Marulli,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
    2. Dipartimento di Astronomia, Alma Mater Studiorum – Università di Bologna, via Ranzani 1, I-40127 Bologna, Italy
    3. INFN/National Institute for Nuclear Physics, Sezione di Bologna, viale Berti Pichat 6/2, I-40127 Bologna, Italy
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  • B. Meneux,

    1. Max-Planck-Institut für Extraterrestrische Physik, D-84571 Garching b. München, Germany
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  • L. Paioro,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • M. Polletta,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • A. Pollo,

    1. Center for Theoretical Physics PAS Al. Lotnikow 32/46 02-668 Warsaw, Poland
    2. The Andrzej Soltan Institute for Nuclear Studies, ul. Hoza 69, 00-681 Warszawa, Poland
    3. Astronomical Observatory of the Jagiellonian University, Orla 171, 30-001 Cracow, Poland
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  • M. Scodeggio,

    1. Istituto Nazionale di Astrofisica – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, via Bassini 15, 20133 Milano, Italy
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  • H. Schlagenhaufer,

    1. Max-Planck-Institut für Extraterrestrische Physik, D-84571 Garching b. München, Germany
    2. Universitätssternwarte München, Ludwig-Maximillians Universität, Scheinerstr. 1, D-81679 München, Germany
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  • L. Tasca,

    1. Laboratoire d’Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, 38, rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
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  • R. Tojeiro,

    1. Institute of Cosmology and Gravitation, Dennis Sciama Building, University of Portsmouth, Burnaby Road, Portsmouth PO1 3FX
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  • D. Vergani,

    1. Istituto Nazionale di Astrofisica – Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
    2. Istituto Nazionale di Astrofisica, Istituto di Astrofisica Spaziale e Fisica Cosmica Bologna, via Gobetti 101, I-40129 Bologna, Italy
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  • A. Zanichelli

    1. Istituto di Radioastronomia, Istituto Nazionale di Astrofisica, via Gobetti 101, I-40129 Bologna, Italy
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E-mail: ben.granett@brera.inaf.it

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.

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