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The 2dF Galaxy Redshift Survey: the blue galaxy fraction and implications for the Butcher-Oemler effect

De Propris, Roberto and Colless, Matthew and Peacock, John A. and Couch, Warrick J. and Driver, Simon P. and Balogh, Michael L. and Baldry, Ivan K. and Baugh, Carlton M. and Bland-Hawthorn, Joss and Bridges, Terry and Cannon, Russell and Cole, Shaun and Collins, Chris and Cross, Nicholas and Dalton, Gavin and Efstathiou, George and Ellis, Richard S. and Frenk, Carlos S. and Glazebrook, Karl and Hawkins, Edward and Jackson, Carole and Lahav, Ofer and Lewis, Ian and Lumsden, Stuart and Maddox, Steve and Madgwick, Darren and Norberg, Peder and Percival, Will and Peterson, Bruce A. and Sutherland, Will and Taylor, Keith (2004) The 2dF Galaxy Redshift Survey: the blue galaxy fraction and implications for the Butcher-Oemler effect. Monthly Notices of the Royal Astronomical Society, 351 (1). pp. 125-132. ISSN 0035-8711. doi:10.1111/j.1365-2966.2004.07756.x.

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We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit adopted, cluster-centric radius and, more generally, local galaxy density, but it does not depend on cluster properties. Changes in the blue fraction are due to variations in the relative proportions of red and blue galaxies but the star formation rate for these two galaxy groups remains unchanged. Our results are most consistent with a model where the star formation rate declines rapidly and the blue galaxies tend to be dwarfs and do not favour mechanisms where the Butcher–Oemler effect is caused by processes specific to the cluster environment.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Baugh, Carlton M.0000-0002-9935-9755
Bland-Hawthorn, Joss0000-0001-7516-4016
Ellis, Richard S.0000-0001-7782-7071
Norberg, Peder0000-0002-5875-0440
Additional Information:© 2004 RAS. Accepted 2004 February 20. Received 2004 February 19; in original form 2004 January 20. We are indebted to the staff at the Anglo-Australian Observatory for their tireless effort and assistance in supporting 2dF during the course of the survey. We are also grateful to the Australian and UK time assignment committees for their continued support for this project. The work of WJC is supported by a grant from the Australian Research Council. MLB acknowledges a Particle Physics and Astronomy Research Council (PPARC) fellowship PPA/P/S/2001/00298. We wish to thank the referee, Tomotsugu Goto, for a useful report, which greatly improved the clarity of this paper.
Funding AgencyGrant Number
Australian Research CouncilUNSPECIFIED
Particle Physics and Research Council (PPARC)PPA/P/S/2001/00298
Subject Keywords:galaxies: clusters: general, galaxies: evolution, galaxies: formation
Issue or Number:1
Record Number:CaltechAUTHORS:20200720-124522705
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Official Citation:Roberto De Propris, Matthew Colless, John A. Peacock, Warrick J. Couch, Simon P. Driver, Michael L. Balogh, Ivan K. Baldry, Carlton M. Baugh, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Shaun Cole, Chris Collins, Nicholas Cross, Gavin Dalton, George Efstathiou, Richard S. Ellis, Carlos S. Frenk, Karl Glazebrook, Edward Hawkins, Carole Jackson, Ofer Lahav, Ian Lewis, Stuart Lumsden, Steve Maddox, Darren Madgwick, Peder Norberg, Will Percival, Bruce A. Peterson, Will Sutherland, Keith Taylor, (the 2dFGRS Team), The 2dF Galaxy Redshift Survey: the blue galaxy fraction and implications for the Butcher—Oemler effect, Monthly Notices of the Royal Astronomical Society, Volume 351, Issue 1, June 2004, Pages 125–132,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104450
Deposited By: Rebecca Minjarez
Deposited On:21 Jul 2020 15:40
Last Modified:16 Nov 2021 18:31

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