SIMBAD references

2016MNRAS.463..413W - Mon. Not. R. Astron. Soc., 463, 413-428 (2016/November-3)

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

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., MEHRTENS N., MILLER C.J., NICHOL R.C., OGANDO R., SAHLEN M., STAHL B., STOTT J.P., THOMAS P.A., VIANA P.T.P. and WILCOX H.

Abstract (from CDS):

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 ∝.to 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.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: intracluster medium - galaxies: distances and redshifts - cosmology: miscellaneous - X-rays: galaxies: clusters - X-rays: galaxies: clusters

Nomenclature: Table 2: [WHR2016] JHHMMSS.ss+DDMMSS.s N=37.

Simbad objects: 72

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