SIMBAD references

2008MNRAS.383..102A - Mon. Not. R. Astron. Soc., 383, 102-112 (2008/January-1)

Scaling relations of the colour-detected cluster RzCS 052 at z = 1.016 and some other high-redshift clusters.


Abstract (from CDS):

We report on the discovery of the z = 1.016 cluster RzCS 052 using a modified red-sequence method, follow up spectroscopy and X-ray imaging. This cluster has a velocity dispersion of 710±150km/s, a virial mass of 4.0x1014M(based on 21 spectroscopically confirmed members) and an X-ray luminosity of (0.68±0.47)x1044 erg/s in the [1-4] keV band. This optically selected cluster appears to be of richness class 3 and to follow the known LXv relation for high-redshift X-ray selected clusters. Using these data, we find that the halo occupation number for this cluster is only marginally consistent with what was expected assuming a self-similar evolution of cluster scaling relations, suggesting perhaps a break of them at z ∼ 1. We also rule out a strong galaxy merging activity between z = 1 and today. Finally, we present a Bayesian approach to measuring cluster velocity dispersions and X-ray luminosities in the presence of a background: we critically reanalyse recent claims for X-ray underluminous clusters using these techniques and find that the clusters can be accommodated within the existing LXvrelation.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): methods: statistical - galaxies: clusters: general - galaxies: clusters: individual: RzCS 052 - galaxies: evolution - dark matter - X-rays: galaxies: clusters

Nomenclature: Table 1: [ADP2008] N=21. Text: RzCS NNN (No. 052).

CDS comments: RzCS 058 not identified.

Simbad objects: 35

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