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The 2dF Galaxy Redshift Survey as a Cosmological Laboratory

Published online by Cambridge University Press:  05 March 2013

Ofer Lahav
Ofer Lahav*
Affiliation:
Department of Physics and Astronomy, University College London, London WC1E 6BT, UK. Email: lahav@star.ucl.ac.uk
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Abstract

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The 2dF Galaxy Redshift Survey (2dFGRS) of 230 000 redshifts of nearby (z ~ 0.1) galaxies is now complete. It has allowed the 2dFGRS Team and others to estimate fundamental cosmological parameters and to study galaxy intrinsic properties. Here we highlight three recent key results from the survey: (a) an upper limit of about 2 eV on the total mass of the three neutrino flavours, and an intriguing reasonable fitting of the 2dFGRS power spectrum to a Mixed Dark Matter model without a Cosmological Constant but with a low Hubble constant; (b) the bimodality of the galaxy population in both spectral parameterisation and in colour; and (c) the clustering of different galaxy types and evidence for relative stochastic biasing.

Keywords

dark mattergalaxies: clusters
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Special Issue 4: Structure and Dynamics in the Local Universe , 2004 , pp. 404 - 407
Copyright
Copyright © Astronomical Society of Australia 2004

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