A Definitive Optical Detection of a Supercluster at z ≈ 0.91

  title={A Definitive Optical Detection of a Supercluster at z ≈ 0.91},
  author={Lori M. Lubin and Robert J. Brunner and Mark Robert Metzger and Marc Postman and John Beverly Oke},
  journal={The Astrophysical Journal},
We present the results from a multiband optical imaging program that has definitively confirmed the existence of a supercluster at z ≈ 0.91. Two massive clusters of galaxies, Cl 1604+4304 at z = 0.897 and Cl 1604+4321 at z = 0.924, were originally observed in the high-redshift cluster survey of Oke, Postman, & Lubin. They are separated by 4300 km s-1 in radial velocity and 17' on the plane of the sky. Their physical and redshift proximity suggested a promising supercluster candidate. Deep BRi… 

Figures from this paper

Discovery of a large‐scale clumpy structure around the Lynx supercluster at z∼ 1.27
We report the discovery of a probable large-scale structure composed of many galaxy clumps around the known twin clusters at z = 1.26 and 1.27 in the Lynx region. Our analysis is based on deep,
An excess of submillimetre sources towards z∼ 1 clusters
Deep submillimetre (submm) observations using SCUBA are presented of the central regions of four high-redshift clusters which have been extensively studied optically: CL0023 + 0423 (z = 0.84), J0848
The progeny of a cosmic titan: a massive multi-component proto-supercluster in formation at z = 2.45 in VUDS
We unveil the complex shape of a proto-supercluster at z ∼ 2.45 in the COSMOS field exploiting the synergy of both spectroscopic and photometric redshifts. Thanks to the spectroscopic redshifts of
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis
We present the results of the dynamical analysis of the rich, hot, and X-ray very luminous galaxy cluster A2219, containing a powerful diffuse radio-halo. Our analysis is based on new redshift data
Discovery of a Supercluster Candidate at z ∼ 1.1
We report a promising candidate for a distant supercluster at z $\sim 1.1$ in the Dark Energy Survey Science Verification data. We examine smoothed semi-3D galaxy density maps in various photo-z
The velocity field of the Lyra complex
Context. The formation of cosmic structures culminates with the assembly of galaxy clusters, a process that is quite different from cluster to cluster. Aims. We present the study of the structure and
Red-sequence cluster finding in the Millennium Simulation
We investigate halo mass selection properties of red-sequence cluster finders using galaxy populations of the Millennium Simulation (MS). A clear red sequence exists for MS galaxies in massive haloes
The build-up of the colour–magnitude relation as a function of environment
We discuss the environmental dependence of galaxy evolution based on deep panoramic imaging of two distant clusters, RX J0152.7-1357 at z = 0.83 and CL0016+ 1609 at z = 0.55, taken with the Subaru
Quasar environments at 0.5 < z < 0.8
Over the past few years, we have been collecting data with the Nordic Optical Telescope (NOT) on the galaxy environments around active galactic nuclei (AGN). Here we present some results from a
Alignment of brightest cluster galaxies with their host clusters
We examine the alignment between brightest cluster galaxies (BCGs) and their host clusters in a sample of 7031 clusters with 0.08 0.65 mag brighter than the mean of the second- and third-ranked


The Dynamics of the Corona Borealis Supercluster
The dynamics of the Corona Borealis (Cor Bor) supercluster was studied on a sample of 1555 galaxies in the vicinity of the six Abell clusters (A2061, A2065, A2067, A2079, A2089, and A2092) which
A Study of Nine High-Redshift Clusters of Galaxies. II. Photometry, Spectra, and Ages of Clusters 0023+0423 and 1604+4304
We present an extensive photometric and spectroscopic study of two high-redshift clusters of galaxies based on data obtained from the Keck 10 m telescopes and the Hubble Space Telescope. The clusters
A Study of Nine High-Redshift Clusters of Galaxies. I. The Survey
We present a description of the observations and data reduction procedures for an extensive spectroscopic and multiband photometric study of nine high-redshift, optically selected cluster candidates.
The Homogeneity of Spheroidal Populations in Distant Clusters
The small scatter observed for the (U-V) colors of spheroidal galaxies in nearby clusters of galaxies provides a powerful constraint on the history of star formation in dense environments. However,
A Study of Nine High-Redshift Clusters of Galaxies. III. Hubble Space Telescope Morphology of Clusters 0023+0423 and 1604+4304*
We present a detailed morphological analysis of the galaxy populations in the first two clusters to be completed in an extensive observational study of nine high-redshift clusters of galaxies. These
The Norris Survey of the Corona Borealis Supercluster
We present a study of the structure and dynamics of the Corona Borealis supercluster (z ≈ 0.07) based on the redshifts of 528 galaxies in the supercluster. The galaxy distribution within Corona
The Evolution of Early-Type Galaxies in Distant Clusters*
We present results from an optical-infrared photometric study of early-type (E+S0) galaxies in 19 galaxy clusters out to z = 0.9. The galaxy sample is selected on the basis of morphologies determined
On the Virgo supercluster and the mean mass density of the universe.
Recent measurements of the anisotropy of the microwave background radiation of the local Hubble flow suggest that the local group of galaxies has a motion of 300--500 km s/sup -1/ directed toward
The colour-magnitude relation as a constraint on the formation of rich cluster galaxies
The colours and magnitudes of early-type galaxies in galaxy clusters are strongly correlated. The existence of such a correlation has been used to infer that early-type galaxies must be old passively
The Local Supercluster kinematic properties (the Local Group infall toward the Virgo Cluster and galaxy density distribution about the Virgo Cluster) in various cosmological models are examined