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The 2dF Galaxy Redshift Survey: spherical harmonics analysis of fluctuations in the final catalogue

Percival, Will J. ; Burkey, Daniel ; Heavens, Alan ; Taylor, Andy ; Cole, Shaun ; Peacock, John A. ; Baugh, Carlton M. ; Bland‐Hawthorn, Joss ; Bridges, Terry ; Cannon, Russell ; Colless, Matthew ; Collins, Chris ; Couch, Warrick ; Dalton, Gavin ; De Propris, Roberto ; Driver, Simon P. ; Efstathiou, George ; Ellis, Richard S. ; Frenk, Carlos S. ; Glazebrook, Karl ; Jackson, Carole ; Lahav, Ofer ; Lewis, Ian ; Lumsden, Stuart ; Maddox, Steve ; Norberg, Peder ; Peterson, Bruce A. ; Sutherland, Will ; Taylor, Keith

In: Monthly Notices of the Royal Astronomical Society, 2004, vol. 353, no. 4, p. 1201-1218

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    Titre
    • The 2dF Galaxy Redshift Survey: spherical harmonics analysis of fluctuations in the final catalogue
    Auteur
    • Percival, Will J.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Burkey, Daniel. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Heavens, Alan. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Taylor, Andy. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Cole, Shaun. Department of Physics, University of Durham, South Road, Durham DH1 3LE
    • Peacock, John A.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Baugh, Carlton M.. Department of Physics, University of Durham, South Road, Durham DH1 3LE
    • Bland‐Hawthorn, Joss. Anglo‐Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
    • Bridges, Terry. Anglo‐Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
    • Cannon, Russell. Anglo‐Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
    • Colless, Matthew. Anglo‐Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
    • Collins, Chris. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead L14 1LD
    • Couch, Warrick. Department of Astrophysics, University of New South Wales, Sydney, NSW 2052, Australia
    • Dalton, Gavin. Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH
    • De Propris, Roberto. Research School of Astronomy & Astrophysics, The Australian National University, Weston Creek, ACT 2611, Australia
    • Driver, Simon P.. Research School of Astronomy & Astrophysics, The Australian National University, Weston Creek, ACT 2611, Australia
    • Efstathiou, George. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA
    • Ellis, Richard S.. Department of Astronomy, Caltech, Pasadena, CA 91125, USA
    • Frenk, Carlos S.. Department of Physics, University of Durham, South Road, Durham DH1 3LE
    • Glazebrook, Karl. Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD 21218‐2686, USA
    • Jackson, Carole. CSIRO Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia
    • Lahav, Ofer. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA
    • Lewis, Ian. Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH
    • Lumsden, Stuart. Department of Physics, University of Leeds, Woodhouse Lane, Leeds LS2 9JT
    • Maddox, Steve. School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD
    • Norberg, Peder. ETHZ Institut für Astronomie, HPF G3.1, ETH Hönggerberg, CH‐8093 Zürich, Switzerland
    • Peterson, Bruce A.. Research School of Astronomy & Astrophysics, The Australian National University, Weston Creek, ACT 2611, Australia
    • Sutherland, Will. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA
    • Taylor, Keith. Department of Astronomy, Caltech, Pasadena, CA 91125, USA
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 2004, vol. 353, no. 4, p. 1201-1218. Blackwell Science Ltd
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:304695
    Summary
    We present the result of a decomposition of the 2dF Galaxy Redshift Survey (2dFGRS) galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies are expected to directly follow the bulk motion of the density field on large scales, so the absolute amplitude of the observed large‐scale redshift‐space distortions caused by this motion is expected to be independent of galaxy properties. By splitting the overdensity field into radial and angular components, we linearly model the observed distortion and obtain the cosmological constraint Ω0.6mσ8= 0.46 ± 0.06. The amplitude of the linear redshift‐space distortions relative to the galaxy overdensity field is dependent on galaxy properties and, for L* galaxies at redshift z= 0, we measure β(L*, 0) = 0.58 ± 0.08, and the amplitude of the overdensity fluctuations b(L*, 0)σ8= 0.79 ± 0.03, marginalizing over the power spectrum shape parameters. Assuming a fixed power spectrum shape consistent with the full Fourier analysis produces very similar parameter constraints