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The 2dF Galaxy Redshift Survey: correlation with the ROSAT-ESO flux-limited X-ray galaxy cluster survey

Hilton, Matt and Collins, Chris and de Propris, Roberto and Baldry, Ivan K. and Baugh, Carlton M. and Bland-Hawthorn, Joss and Bridges, Terry and Cannon, Russell and Cole, Shaun and Colless, Matthew and Couch, Warrick J. and Dalton, Gavin B. and Driver, Simon P. and Efstathiou, George and Ellis, Richard S. and Frenk, Carlos S. and Glazebrook, Karl and Jackson, Carole A. and Lahav, Ofer and Lewis, Ian and Lumsden, Stuart and Maddox, Steve J. and Madgwick, Darren and Norberg, Peder and Peacock, John A. and Peterson, Bruce A. and Sutherland, Will and Taylor, Keith (2005) The 2dF Galaxy Redshift Survey: correlation with the ROSAT-ESO flux-limited X-ray galaxy cluster survey. Monthly Notices of the Royal Astronomical Society, 363 (2). pp. 661-674. ISSN 0035-8711. doi:10.1111/j.1365-2966.2005.09470.x.

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The ROSAT-European Southern Observatory (ESO) flux-limited X-ray (REFLEX) galaxy cluster survey and the Two-degree Field Galaxy Redshift Survey (2dFGRS), respectively, comprise the largest, homogeneous X-ray selected cluster catalogue and completed galaxy redshift survey. In this work, we combine these two outstanding data sets in order to study the effect of the large-scale cluster environment, as traced by X-ray luminosity, on the properties of the cluster member galaxies. We measure the Lₓ−σᵣ relation from the correlated data set and find it to be consistent with recent results found in the literature. Using a sample of 19 clusters with Lₓ ≥ 0.36 × 10⁴⁴ erg s⁻¹ in the 0.1–2.4 keV band, and 49 clusters with lower X-ray luminosity, we find that the fraction of early spectral type (η=−1.4), passively evolving galaxies is significantly higher in the high-Lₓ sample within R₂₀₀. We extend the investigation to include composite bⱼ cluster luminosity functions, and find that the characteristic magnitude of the Schechter-function fit to the early-type luminosity function is fainter for the high-Lₓ sample compared to the low-Lₓ sample (ΔM*= 0.58 ± 0.14). This seems to be driven by a deficit of such galaxies with Mbⱼ∼−21. In contrast, we find no significant differences between the luminosity functions of star-forming, late-type galaxies. We believe these results are consistent with a scenario in which the high-Lₓ clusters are more dynamically evolved systems than the low-Lₓ clusters.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Baugh, Carlton M.0000-0002-9935-9755
Bland-Hawthorn, Joss0000-0001-7516-4016
Colless, Matthew0000-0001-9552-8075
Ellis, Richard S.0000-0001-7782-7071
Norberg, Peder0000-0002-5875-0440
Alternate Title:The 2dF Galaxy Redshift Survey: correlation with the ROSAT-ESO Flux Limited X-ray (REFLEX) galaxy cluster survey
Additional Information:© 2005 RAS. Accepted 2005 July 27. Received 2005 July 26; in original form 2005 June 21. We thank everyone involved in the success of both the 2dFGRS and the REFLEX cluster survey, without which of course this work would not have been possible. Thanks to Phil James for some useful suggestions that improved the clarity of this paper. Thanks also to the referee, Hans Böhringher, who provided useful feedback, which improved this manuscript. MH acknowledges the support of a studentship from Liverpool John Moores University.
Funding AgencyGrant Number
Liverpool John Moores UniversityUNSPECIFIED
Subject Keywords:galaxies: evolution, galaxies: luminosity function, mass function, cosmology: observations, X-rays: galaxies: clusters
Issue or Number:2
Record Number:CaltechAUTHORS:20200713-181756654
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Official Citation:Matt Hilton, Chris Collins, Roberto de Propris, Ivan K. Baldry, Carlton M. Baugh, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Shaun Cole, Matthew Colless, Warrick J. Couch, Gavin B. Dalton, Simon P. Driver, George Efstathiou, Richard S. Ellis, Carlos S. Frenk, Karl Glazebrook, Carole A. Jackson, Ofer Lahav, Ian Lewis, Stuart Lumsden, Steve J. Maddox, Darren Madgwick, Peder Norberg, John A. Peacock, Bruce A. Peterson, Will Sutherland, Keith Taylor, The 2dF Galaxy Redshift Survey: correlation with the ROSAT-ESO flux-limited X-ray galaxy cluster survey, Monthly Notices of the Royal Astronomical Society, Volume 363, Issue 2, October 2005, Pages 661–674,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104371
Deposited By: Rebecca Minjarez
Deposited On:16 Jul 2020 16:11
Last Modified:16 Nov 2021 18:31

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