The 2dF Galaxy Redshift Survey as a Cosmological Laboratory

Publications of the Astronomical Society of Australia

Ofer Lahav¹ 

关键词: dark matter;    galaxies: clusters;   

DOI  :  10.1071/AS04052

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

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.

【 授权许可】

Unknown