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Title: Discovery of a massive supercluster system at z ~ 0.47

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 × 10 17 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.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [2] ;  [1] ;  [4] ;  [1] ;  [2]
  1. Inst. de Astrofísica de Canarias, Tenerife (Spain); Univ. de La Laguna, Tenerife (Spain). Dept. Astrofísica
  2. Tartu Observatory, Tõravere (Estonia)
  3. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy
  4. ICG-Univ. of Portsmouth, Portsmouth (United Kingdom)
Publication Date:
Grant/Contract Number:
SC0010331
Type:
Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 588; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Research Org:
Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); Spanish Ministry of Economy and Competitiveness (MINECO); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; large-scale structure of Universe
OSTI Identifier:
1469358

Lietzen, H., Tempel, E., Liivamägi, L. J., Montero-Dorta, A., Einasto, M., Streblyanska, A., Maraston, C., Rubiño-Martín, J. A., and Saar, E.. Discovery of a massive supercluster system at z ~ 0.47. United States: N. p., Web. doi:10.1051/0004-6361/201628261.
Lietzen, H., Tempel, E., Liivamägi, L. J., Montero-Dorta, A., Einasto, M., Streblyanska, A., Maraston, C., Rubiño-Martín, J. A., & Saar, E.. Discovery of a massive supercluster system at z ~ 0.47. United States. doi:10.1051/0004-6361/201628261.
Lietzen, H., Tempel, E., Liivamägi, L. J., Montero-Dorta, A., Einasto, M., Streblyanska, A., Maraston, C., Rubiño-Martín, J. A., and Saar, E.. 2016. "Discovery of a massive supercluster system at z ~ 0.47". United States. doi:10.1051/0004-6361/201628261. https://www.osti.gov/servlets/purl/1469358.
@article{osti_1469358,
title = {Discovery of a massive supercluster system at z ~ 0.47},
author = {Lietzen, H. and Tempel, E. and Liivamägi, L. J. and Montero-Dorta, A. and Einasto, M. and Streblyanska, A. and Maraston, C. and Rubiño-Martín, J. A. and Saar, E.},
abstractNote = {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.},
doi = {10.1051/0004-6361/201628261},
journal = {Astronomy and Astrophysics},
number = ,
volume = 588,
place = {United States},
year = {2016},
month = {3}
}