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Discovery of a massive supercluster system at z ~ 0.47

Journal Article · · Astronomy and Astrophysics
 [1];  [2];  [2];  [3];  [2];  [4];  [5];  [4];  [2]
  1. Inst. de Astrofísica de Canarias, Tenerife (Spain); Univ. de La Laguna, Tenerife (Spain). Dept. Astrofísica; Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain
  2. Tartu Observatory, Tõravere (Estonia)
  3. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy
  4. Inst. de Astrofísica de Canarias, Tenerife (Spain); Univ. de La Laguna, Tenerife (Spain). Dept. Astrofísica
  5. ICG-Univ. of Portsmouth, Portsmouth (United Kingdom)
+ Show Author Affiliations
Aims. Superclusters are the largest relatively isolated systems in the cosmic web. Using the SDSS BOSS survey, we search for the largest superclusters in the redshift range 0.43 < z < 0.71. Methods. We generate a luminosity-density field smoothed over 8 h-1 Mpc to detect the large-scale over-density regions. Each individual over-density region is defined as single supercluster in the survey. Here, we define the superclusters so that they are comparable to the superclusters found in the SDSS main survey. Results. We find a system that we call the BOSS Great Wall (BGW), which consists of two walls with diameters 186 and 173 h-1 Mpc and two other major superclusters with diameters of 64 and 91 h-1 Mpc. As a whole, this system consists of 830 galaxies with the mean redshift 0.47. We estimate the total mass to be approximately 2 × 1017 h-1 M⊙.The morphology of the superclusters in the BGW system is similar to the morphology of the superclusters in the Sloan Great Wall region. Conclusions. The BGW is one of the most extended and massive systems of superclusters found so far in the Universe.
Research Organization:
Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Organization:
National Science Foundation (NSF); Spanish Ministry of Economy and Competitiveness (MINECO); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
SC0010331
OSTI ID:
1469358
Journal Information:
Astronomy and Astrophysics, Journal Name: Astronomy and Astrophysics Vol. 588; ISSN 0004-6361
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (11)

Spatial Distribution of Gamma-Ray Burst Sources journal November 2017
The progeny of a cosmic titan: a massive multi-component proto-supercluster in formation at z = 2.45 in VUDS journal November 2018
Supercluster A2142 and collapse in action: infalling and merging groups and galaxy transformations journal December 2018
The whole picture of the large-scale structure of the CL1604 supercluster at z ∼ 0.9 journal September 2019
The Excess Density of Field Galaxies near z ~ 0.56 around the Gamma-Ray Burst GRB021004 Position journal April 2018
Saraswati: An Extremely Massive ∼200 Megaparsec Scale Supercluster journal July 2017
Saraswati: An Extremely Massive ~ 200 Megaparsec Scale Supercluster text January 2017
Spatial Distribution of Gamma-Ray Burst Sources text January 2018
The progeny of a Cosmic Titan: a massive multi-component proto-supercluster in formation at z=2.45 in VUDS text January 2018
Supercluster A2142 and collapse in action - infalling and merging groups and galaxy transformations text January 2018
The whole picture of the large-scale structure of the CL1604 supercluster at z$\sim$0.9 text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
large-scale structure of Universe