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The 2dF Galaxy Redshift Survey: the dependence of galaxy clustering on luminosity and spectral type

Norberg, P. and Baugh, C. M. and Hawkins, E. and Maddox, S. and Madgwick, D. and Lahav, O. and Cole, S. and Frenk, C. S. and Baldry, I. and Bland-Hawthorn, J. and Bridges, T. and Cannon, R. and Colless, M. and Collins, C. and Couch, W. and Dalton, G. and De Propris, R. and Driver, S. P. and Efstathiou, G. and Ellis, R. S. and Glazebrook, K. and Jackson, C. and Lewis, I. and Lumsden, S. and Peacock, J. A. and Peterson, B. A. and Sutherland, W. and Taylor, K. (2002) The 2dF Galaxy Redshift Survey: the dependence of galaxy clustering on luminosity and spectral type. Monthly Notices of the Royal Astronomical Society, 332 (4). pp. 827-838. ISSN 0035-8711. doi:10.1046/j.1365-8711.2002.05348.x.

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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 owing 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 < (σ/h⁻¹ Mpc) < 15, with a marginally steeper slope for early types than late types. Both early and late types have approximately the same dependence of clustering strength on luminosity, with the clustering amplitude increasing by a factor of ∼2.5 between L* and 4L*. At all luminosities, however, the correlation function amplitude for the early types is ∼50 per cent higher than that of the late types. These results support the view that luminosity, and not type, is the dominant factor in determining how the clustering strength of the whole galaxy population varies with luminosity.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Norberg, P.0000-0002-5875-0440
Bland-Hawthorn, J.0000-0001-7516-4016
Colless, M.0000-0001-9552-8075
Ellis, R. S.0000-0001-7782-7071
Additional Information:© 2002 RAS. Accepted 2002 January 17. Received 2002 January 9; in original form 2001 December 3. The 2dFGRS is being carried out using the 2-degree field facility on the 3.9-m Anglo-Australian Telescope (AAT). We thank all those involved in the smooth running and continued success of the 2dF and the AAT. We thank the referee, Dr J. Loveday, for producing a speedy and helpful report. PN is supported by the Swiss National Science Foundation and an ORS award, and CMB acknowledges the receipt of a Royal Society University Research Fellowship. This work was supported in part by a PPARC rolling grant at Durham.
Funding AgencyGrant Number
Swiss National Science Foundation (SNSF)UNSPECIFIED
Cambridge Overseas TrustUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Subject Keywords:methods: numerical, methods: statistical, galaxies: formation, large-scale structure of Universe
Issue or Number:4
Record Number:CaltechAUTHORS:20200601-103013064
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Official Citation:Peder Norberg, Carlton M. Baugh, Ed Hawkins, Steve Maddox, Darren Madgwick, Ofer Lahav, Shaun Cole, Carlos S. Frenk, Ivan Baldry, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Matthew Colless, Chris Collins, Warrick Couch, Gavin Dalton, Roberto De Propris, Simon P. Driver, George Efstathiou, Richard S. Ellis, Karl Glazebrook, Carole Jackson, Ian Lewis, Stuart Lumsden, John A. Peacock, Bruce A. Peterson, Will Sutherland, Keith Taylor, The 2dF Galaxy Redshift Survey: the dependence of galaxy clustering on luminosity and spectral type, Monthly Notices of the Royal Astronomical Society, Volume 332, Issue 4, June 2002, Pages 827–838,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103586
Deposited By: George Porter
Deposited On:01 Jun 2020 20:59
Last Modified:16 Nov 2021 18:23

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