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The 2dF Galaxy Redshift Survey: the dependence of galaxy clustering on luminosity and spectral type
Journal article published in 2002 by
Peder Norberg,
Cm M. Baugh,
Ed Hawkins,
Steve Maddox 
,
Darren Madgwick,
Ofer Lahav,
Shaun Cole ,
Cs S. Frenk,
Ivan Baldry,
Joss Bland-Hawthorn,
Terry Bridges,
Russell Cannon,
Matthew Colless ,
Chris Collins,
Warrick Couch
and other authors.
,
Darren Madgwick,
Ofer Lahav,
Shaun Cole ,
Cs S. Frenk,
Ivan Baldry,
Joss Bland-Hawthorn,
Terry Bridges,
Russell Cannon,
Matthew Colless ,
Chris Collins,
Warrick Couch
and other authors.
Abstract
We investigate the dependence of galaxy clustering on luminosity and spectral type using the 2dF Galaxy Redshift Survey (2dFGRS). Spectral types are assigned using the principal component analysis of Madgwick et al. We divide the sample into two broad spectral classes: galaxies with strong emission lines (`late-types'), and more quiescent galaxies (`early-types'). We measure the clustering in real space, free from any distortion of the clustering pattern due to peculiar velocities, for a series of volume-limited samples. The projected correlation functions of both spectral types are well described by a power law for transverse separations in the range 2