A uniformly selected catalogue of distant galaxy clusters

Couch, Warrick J.; Ellis, Richard S.; Malin, D. F.; MacLaren, Iain

doi:10.1093/mnras/249.4.606

Cited by 78 publications

(70 citation statements)

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“…Optical plate material deeper than the POSS was successfully employed to search for more distant clusters with purely visual techniques (Kristian et al 1978, Couch et al 1991, Gunn et al 1986). By using red-sensitive plates, Gunn and collaborators were able to find clusters out to z ≃ 0.9.…”

Section: Optically-based Cluster Surveysmentioning

confidence: 99%

The Evolution of X-Ray Clusters of Galaxies

Rosati

Borgani

Norman

2002

Annu. Rev. Astron. Astrophys.

448

467

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Considerable progress has been made over the last decade in the study of the evolutionary trends of the population of galaxy clusters in the Universe. In this review we focus on observations in the X-ray band. X-ray surveys with the ROSAT satellite, supplemented by follow-up studies with ASCA and Beppo-SAX, have allowed an assessment of the evolution of the space density of clusters out to z ≈ 1, and the evolution of the physical properties of the intra-cluster medium out to z ≈ 0.5. With the advent of Chandra and Newton-XMM, and their unprecedented sensitivity and angular resolution, these studies have been extended beyond redshift unity and have revealed the complexity of the thermodynamical structure of clusters. The properties of the intra-cluster gas are significantly affected by non-gravitational processes including star formation and Active Galactic Nucleus (AGN) activity. Convincing evidence has emerged for modest evolution of both the bulk of the X-ray cluster population and their thermodynamical properties since redshift unity. Such an observational scenario is consistent with hierarchical models of structure formation in a flat low density universe with Ωm ≃ 0.3 and σ8 ≃ 0.7 − 0.8 for the normalization of the power spectrum. Basic methodologies for construction of X-ray-selected cluster samples are reviewed and implications of cluster evolution for cosmological models are discussed.

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Section: Optically-based Cluster Surveysmentioning

confidence: 99%

The Evolution of X-Ray Clusters of Galaxies

Rosati

Borgani

Norman

2002

Annu. Rev. Astron. Astrophys.

448

467

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“…Castander et al (1994) used ROSAT to observe cluster candidates in the redshift range 0.7−0.9 from the 3.5 square degree subsample of the Gunn et al (1986) optical cluster catalog and found surprisingly weak X-ray emission. Bower et al (1994) undertook ROSAT X-ray observations of optically selected clusters from the Couch et al (1991) 46 deg 2 catalog. Bower et al (1994) selected a random subset of the full catalog in the redshift range 0.15−0.66.…”

Section: Introductionmentioning

confidence: 99%

RASS-SDSS galaxy cluster survey

Popesso¹,

Biviano

Böhringer

et al. 2006

A&A

118

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Aims. In this paper we consider a large sample of optically selected clusters, in order to elucidate the physical reasons for the existence of X-ray underluminous clusters. Methods. For this purpose we analyzed the correlations of the X-ray and optical properties of a sample of 137 spectroscopically confirmed Abell clusters in the SDSS database. We searched for the X-ray counterpart of each cluster in the ROSAT All Sky Survey. We find that 40% of our clusters have a marginal X-ray detection or remain undetected in X-rays. These clusters appear too X-ray faint on average for their mass as determined by velocity dispersion; i.e. they do not follow the scaling relation between X-ray luminosity and virial mass traced by the other clusters. On the other hand, they do follow the general scaling relation between optical luminosity and virial mass. We refer to these clusters as the X-ray-underluminous Abell clusters (AXU clusters, for short) and designate as "normal" the X-ray detected Abell systems. We separately examined the distributions and properties of the galaxy populations of the normal and the AXU clusters. Results. The AXU clusters are characterized by leptokurtic (more centrally concentrated than a Gaussian) velocity distribution of their member galaxies in the outskirts (1.5 < r/r 200 ≤ 3.5), as expected for the systems in accretion. In addition, the AXU clusters have a higher fraction of blue galaxies in the external region and show a marginally significant paucity of galaxies at the center. Our results seem to support the interpretation that the AXU clusters are systems in formation undergoing a phase of mass accretion. Their low X-ray luminosity should be due to the still accreting intracluster gas or to an ongoing merging process.

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“…Published work in this Ðeld relies on the examination of the same D12 clusters, drawn primarily from two optical surveys. Both of these surveys (Gunn, Hoessel, & Oke 1986, hereafter GHO ;Couch et al 1991) selected objects on the basis of an overdensity of resolved objects. GHOÏs e †orts yielded eight clusters with z º 0.55, while Couch et al (1991) yielded three.…”

Section: Introductionmentioning

confidence: 99%

Cluster Galaxy Evolution from a New Sample of Galaxy Clusters at 0.3 <z< 0.9

Nelson

Gonzalez

Zaritsky

et al. 2001

ApJ

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We analyze photometry and spectroscopy of a sample of 63 clusters at 0.3 ¹ z ¹ 0.9 drawn from the Las Campanas Distant Cluster Survey to empirically constrain models of cluster galaxy evolution. SpeciÐcally, (1) by combining I-band photometry of 44 of our clusters with that of 19 clusters from the literature, we parameterize the redshift dependence of in the observed frame as We suggest that M I * these observations can be explained with a model in which luminous early-type galaxies (or more precisely, the progenitors of current-day luminous early-type galaxies) form the bulk of their stellar populations at high redshifts and in which many of these galaxies, if not all, accrete mass either in the (Z5) form of evolved stellar populations or gas that causes only a short-term episode of star formation at lower redshifts (1.5 \ z \ 2). Our data are too crude to reach conclusions regarding the evolutionary state of any particular cluster or to investigate whether the morphological evolution of galaxies matches the simple scenario that we discuss, but the statistical nature of this study suggests that the observed evolutionary trends are universal in massive clusters.

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A uniformly selected catalogue of distant galaxy clusters

Cited by 78 publications

References 0 publications

The Evolution of X-Ray Clusters of Galaxies

The Evolution of X-Ray Clusters of Galaxies

RASS-SDSS galaxy cluster survey

Cluster Galaxy Evolution from a New Sample of Galaxy Clusters at 0.3 <z< 0.9

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