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Large-Scale Structure from 2dFGRS

Published online by Cambridge University Press:  23 September 2016

J. A. Peacock
J. A. Peacock*
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK

Abstract

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The 2dF Galaxy Redshift Survey is now complete, and the full data are public. 2dFGRS was the first survey to observe more than 100,000 redshifts, making possible precise measurements of many aspects of galaxy clustering, which can be studied as a function of galaxy spectral type, and also of broad-band colour. Early-type galaxies are more strongly clustered than late types, with a relative bias of b = 1.25 ± 0.09 on large scales. For both types, luminosity dependence of clustering is detected at high significance, and is well described by a relative bias of b/b* = 0.85 + 0.15(L/L*). This is consistent with the observation that L* in rich clusters is brighter than the global value by 0.28 ± 0.08 mag. Redshift-space distortions from large-scale infall velocities measure the distortion parameter β = Ω0.6m/b = 0.49 ± 0.09. The power spectrum is measured to ≲ 10% accuracy for k > 0.02 h Mpc--1, and is well fitted by a CDM model with Ωmh = 0.18 ± 0.02 and a baryon fraction of 0.17 ± 0.06. The 2dFGRS plays an essential role in breaking model degeneracies inherent in CMB data; a joint analysis with WMAP results requires Ωm = 0.25 ± 15% and h = 0.73 ± 5%, assuming scalar fluctuations.

Type
Session II: Formation of Large-Scale Structure 75
Information
Symposium - International Astronomical Union , Volume 216: Maps of the Cosmos , 2005 , pp. 77 - 94
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

Ballinger, W. E., Peacock, J. A., & Heavens, A. F. 1996, MNRAS, 282, 877 Google Scholar
Benoist, C., Maurogordato, S., da Costa, L. N., Cappi, A., & Schaeffer, R. 1996, ApJ, 472, 452 Google Scholar
Benson, A. J., Cole, S., Frenk, C. S., Baugh, C. M., & Lacey, C. G. 2000, MNRAS, 311, 793 Google Scholar
Bond, J. R., Efstathiou, G., & Tegmark, M. 1997, MNRAS, 291, L33 Google Scholar
Burles, S., Nollett, K. M., & Turner, M. S. 2001, ApJ, 552, L1 Google Scholar
Cole, S., Hatton, S., Weinberg, D. H., & Frenk, C. S. 1998, MNRAS, 300, 945 Google Scholar
Cole, S., & Kaiser, N. 1989, MNRAS, 237, 1127 Google Scholar
Colless, M., et al. 2001, MNRAS, 328, 1039 Google Scholar
Colless, M., et al. 2003, astro-ph/0306581 Google Scholar
Cooray, A., & Sheth, R. 2002, Physics Reports, 372, 1 CrossRefGoogle Scholar
Davis, M., & Geller, M. J. 1976, ApJ, 208, 13 Google Scholar
Davis, M., & Peebles, P. J. E. 1983, ApJ, 267, 465 Google Scholar
De Propris, R., et al. 2003, MNRAS, 342, 725 Google Scholar
Efstathiou, G., & Bond, J. R. 1999, MNRAS, 304, 75 CrossRefGoogle Scholar
Efstathiou, G., et al. 2002, MNRAS, 330, L29 Google Scholar
Elgaroy, O., et al. 2002, Phys. Rev. Lett, 89, 061301 Google Scholar
Evrard, A. 1997, MNRAS, 292, 289 Google Scholar
Folkes, S. J., et al. 1999, MNRAS, 308, 459 Google Scholar
Feldman, H. A., Kaiser, N., & Peacock, J. A. 1994, ApJ, 426, 23 CrossRefGoogle Scholar
Freedman, W. L., et al. 2001, ApJ, 553, 47 Google Scholar
Hambly, N. C., Irwin, M. J., MacGillivray, H. T. 2001, MNRAS 326, 1295 Google Scholar
Hawkins, E. J., et al. 2003, MNRAS, 346, 78 Google Scholar
Kaiser, N. 1987, MNRAS, 227, 1 Google Scholar
Kauffmann, G., Nusser, A., & Steinmetz, M. 1997, MNRAS, 286, 795 Google Scholar
Knop, R. A. et al. 2003, ApJ, 598, 102 Google Scholar
Lahav, O., et al. 2002, MNRAS, 333, 961 CrossRefGoogle Scholar
Lewis, I. J., et al. 2002, MNRAS, 333, 279 Google Scholar
Loeb, A., & Barkana, R. 2001, ARAA, 39, 19 Google Scholar
Loveday, J., Maddox, S. J., Efstathiou, G., & Peterson, B. A. 1995, ApJ, 442, 457 CrossRefGoogle Scholar
Maddox, S. J., Efstathiou, G., & Sutherland, W. J. 1990c, MNRAS, 246, 433 Google Scholar
Maddox, S. J., Efstathiou, G., Sutherland, W. J., & Loveday, J. 1990a, MNRAS, 242, 43P.Google Scholar
Maddox, S. J., Sutherland, W. J., Efstathiou, G., & Loveday, J. 1990b, MNRAS, 243, 692 Google Scholar
Madgwick, D., et al. 2002, MNRAS, 333, 133 Google Scholar
Madgwick, D., et al. 2003, MNRAS, 344, 847 Google Scholar
Mo, H. J., & White, S. D. M. 1996, MNRAS, 282, 347 Google Scholar
Mould, J. R., et al. 2000, ApJ, 529, 786 Google Scholar
Norberg, P., et al. 2001, MNRAS, 328, 64 Google Scholar
Norberg, P., et al. 2002, MNRAS, 332, 827 Google Scholar
Peacock, J. A., & Smith, R. E. 2000, MNRAS, 318, 1144 Google Scholar
Peacock, J. A., et al. 2001, Nature, 410, 169 Google Scholar
Percival, W. J., et al. 2001, MNRAS, 327, 1297 CrossRefGoogle Scholar
Percival, W. J., et al. 2002, MNRAS, 337, 1068 Google Scholar
Percival, W. J., Verde, L., & Peacock, J. A. 2004, MNRAS, 347, 645 Google Scholar
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525 Google Scholar
Seljak, U. 2000, MNRAS, 318, 203 Google Scholar
Spergel, D. N., et al. 2003, ApJS, 148, 175 Google Scholar
Stoughton, C. L., et al. 2002, AJ, 123, 485 Google Scholar
Tonry, J. L., et al. 2003, ApJ, 594, 1 Google Scholar
Verde, L., et al. 2002, MNRAS, 335, 432 Google Scholar
Vilenkin, A. 2003, in STScI Symp. Ser. Vol. 15, The Dark Matter Universe: Matter, Energy and Gravity, ed. Livio, M. (Cambridge: Cambridge University Press), 173, hep-th/0106083 Google Scholar
Zaldarriaga, M., Spergel, D., & Seljak, U. 1997, ApJ, 488, 1 Google Scholar