The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time

Susan Wilson; Matt Hilton; Philip J. Rooney; Caroline Caldwell; Scott T. Kay; Chris A. Collins; Ian G. Mccarthy; A. Kathy Romer; Alberto Bermeo; Rebecca Bernstein; Luiz Da Costa; Daniel Gifford; Devon Hollowood; Ben Hoyle; Tesla Jeltema; Andrew R. Liddle; Marcio A. G Maia; Robert G. Mann; Julian A. Mayers; Nicola Mehrtens; Christopher J. Miller; Robert C. Nichol; Ricardo Ogando; Martin Sahlén; Benjamin Stahl; John P. Stott; Peter A. Thomas; Pedro T. P. Viana; Harry Wilcox

doi:10.1093/mnras/stw1947

The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time

Susan Wilson, Matt Hilton, Philip J. Rooney, Caroline Caldwell, Scott T. Kay, Chris A. Collins, Ian G. Mccarthy, A. Kathy Romer, Alberto Bermeo, Rebecca Bernstein, Luiz Da Costa, Daniel Gifford, Devon Hollowood, Ben Hoyle, Tesla Jeltema, Andrew R. Liddle, Marcio A. G Maia, Robert G. Mann, Julian A. Mayers, Nicola MehrtensChristopher J. Miller, Robert C. Nichol, Ricardo Ogando, Martin Sahlén, Benjamin Stahl, John P. Stott, Peter A. Thomas, Pedro T. P. Viana, Harry Wilcox

Institute of Cosmology & Gravitation

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Abstract

We measure the evolution of the velocity dispersion–temperature (σv–TX) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (σv ∝ T0.86±0.14E(z)−0.37±0.33). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling.

Original language	English
Pages (from-to)	413-428
Number of pages	16
Journal	Monthly Notices of the Royal Astronomical Society
Volume	463
Issue number	1
Early online date	4 Aug 2016
DOIs	https://doi.org/10.1093/mnras/stw1947
Publication status	Published - 21 Nov 2016

Keywords

galaxies: clusters: general
galaxies: clusters: intracluster medium
galaxies: distances and redshifts
cosmology: miscellaneous
X-rays: galaxies: clusters
RCUK
STFC
ST/L000652/1
ST/L000768/1

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stw1947
This article has been accepted for publication in MNRAS © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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Wilson, S., Hilton, M., Rooney, P. J., Caldwell, C., Kay, S. T., Collins, C. A., Mccarthy, I. G., Romer, A. K., Bermeo, A., Bernstein, R., Da Costa, L., Gifford, D., Hollowood, D., Hoyle, B., Jeltema, T., Liddle, A. R., Maia, M. A. G., Mann, R. G., Mayers, J. A., ... Wilcox, H. (2016). The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time. Monthly Notices of the Royal Astronomical Society, 463(1), 413-428. https://doi.org/10.1093/mnras/stw1947

@article{663500c455e04bd396f2571923db5202,

title = "The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time",

abstract = "We measure the evolution of the velocity dispersion–temperature (σv–TX) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (σv ∝ T0.86±0.14E(z)−0.37±0.33). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling.",

keywords = "galaxies: clusters: general, galaxies: clusters: intracluster medium, galaxies: distances and redshifts, cosmology: miscellaneous, X-rays: galaxies: clusters, RCUK, STFC, ST/L000652/1, ST/L000768/1",

author = "Susan Wilson and Matt Hilton and Rooney, {Philip J.} and Caroline Caldwell and Kay, {Scott T.} and Collins, {Chris A.} and Mccarthy, {Ian G.} and Romer, {A. Kathy} and Alberto Bermeo and Rebecca Bernstein and {Da Costa}, Luiz and Daniel Gifford and Devon Hollowood and Ben Hoyle and Tesla Jeltema and Liddle, {Andrew R.} and Maia, {Marcio A. G} and Mann, {Robert G.} and Mayers, {Julian A.} and Nicola Mehrtens and Miller, {Christopher J.} and Nichol, {Robert C.} and Ricardo Ogando and Martin Sahl{\'e}n and Benjamin Stahl and Stott, {John P.} and Thomas, {Peter A.} and Viana, {Pedro T. P.} and Harry Wilcox",

year = "2016",

month = nov,

day = "21",

doi = "10.1093/mnras/stw1947",

language = "English",

volume = "463",

pages = "413--428",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

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Wilson, S, Hilton, M, Rooney, PJ, Caldwell, C, Kay, ST, Collins, CA, Mccarthy, IG, Romer, AK, Bermeo, A, Bernstein, R, Da Costa, L, Gifford, D, Hollowood, D, Hoyle, B, Jeltema, T, Liddle, AR, Maia, MAG, Mann, RG, Mayers, JA, Mehrtens, N, Miller, CJ, Nichol, RC, Ogando, R, Sahlén, M, Stahl, B, Stott, JP, Thomas, PA, Viana, PTP & Wilcox, H 2016, 'The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time', Monthly Notices of the Royal Astronomical Society, vol. 463, no. 1, pp. 413-428. https://doi.org/10.1093/mnras/stw1947

TY - JOUR

T1 - The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time

AU - Wilson, Susan

AU - Hilton, Matt

AU - Rooney, Philip J.

AU - Caldwell, Caroline

AU - Kay, Scott T.

AU - Collins, Chris A.

AU - Mccarthy, Ian G.

AU - Romer, A. Kathy

AU - Bermeo, Alberto

AU - Bernstein, Rebecca

AU - Da Costa, Luiz

AU - Gifford, Daniel

AU - Hollowood, Devon

AU - Hoyle, Ben

AU - Jeltema, Tesla

AU - Liddle, Andrew R.

AU - Maia, Marcio A. G

AU - Mann, Robert G.

AU - Mayers, Julian A.

AU - Mehrtens, Nicola

AU - Miller, Christopher J.

AU - Nichol, Robert C.

AU - Ogando, Ricardo

AU - Sahlén, Martin

AU - Stahl, Benjamin

AU - Stott, John P.

AU - Thomas, Peter A.

AU - Viana, Pedro T. P.

AU - Wilcox, Harry

PY - 2016/11/21

Y1 - 2016/11/21

N2 - We measure the evolution of the velocity dispersion–temperature (σv–TX) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (σv ∝ T0.86±0.14E(z)−0.37±0.33). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling.

AB - We measure the evolution of the velocity dispersion–temperature (σv–TX) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (σv ∝ T0.86±0.14E(z)−0.37±0.33). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling.

KW - galaxies: clusters: general

KW - galaxies: clusters: intracluster medium

KW - galaxies: distances and redshifts

KW - cosmology: miscellaneous

KW - X-rays: galaxies: clusters

KW - RCUK

KW - STFC

KW - ST/L000652/1

KW - ST/L000768/1

U2 - 10.1093/mnras/stw1947

DO - 10.1093/mnras/stw1947

M3 - Article

SN - 0035-8711

VL - 463

SP - 413

EP - 428

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

The XMM Cluster Survey: evolution of the velocity dispersion–temperature relation over half a Hubble time

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Keywords

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