Results 71 to 80 of about 2,250,218 (355)

Constraining galaxy cluster temperatures and redshifts with eROSITA survey data [PDF]

, 2014
Context. The nature of dark energy is imprinted in the large-scale structure of the Universe and thus in the mass and redshift distribution of galaxy clusters.
K. Borm, T. Reiprich, I. Mohammed, L. Lovisari   +3 more
semanticscholar   +1 more source

Constructing a Galaxy Cluster Catalog in IllustrisTNG300 Using the Mulguisin Algorithm

The Astrophysical Journal
We present a new simulated galaxy cluster catalog based on the IllustrisTNG simulation. We use the Mulguisin (MGS) algorithm to identify galaxy overdensities.
Lael Shin, Jubee Sohn, Young Ju, Inkyu Park, Cristiano G. Sabiu   +4 more
doaj   +1 more source

DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS

Odessa Astronomical Publications, 2018
The results of the detailed analysis of the 2D distribution of galaxies in 28 rich galaxy clusters with significant concentration to the cluster center are present.
E. Panko, A. Sirginava, A. Stepaniuk
doaj   +1 more source

Simulating the formation of a proto-cluster at z~2

, 2008
We present results from two high-resolution hydrodynamical simulations of proto-cluster regions at z~2.1. The simulations have been compared to observational results for the socalled Spiderweb galaxy system, the core of a putative proto-cluster region at
Borgani, S., De Lucia, G., Dolag, K., Murante, G., Saro, A., Tornatore, L.   +5 more
core   +1 more source

Characterising superclusters with the galaxy cluster distribution [PDF]

, 2014
G. Chon, et al., “Characterising superclusters with the galaxy cluster distribution”, Astronomy & Astrophysics, Vol. 567, August 2014. This version of record is available at: https://www.aanda.org/articles/aa/abs/2014/07/aa24047-14/aa24047-14.html ...
G. Chon, H. Boehringer, C. Collins, M. Krause   +3 more
semanticscholar   +1 more source

Statistics of Galaxy Clustering [PDF]

, 2006
In this introductory talk we will establish connections between the statistical analysis of galaxy clustering in cosmology and recent work in mainstream spatial statistics. The lecture will review the methods of spatial statistics used by both sets of scholars, having in mind the cross-fertilizing purpose of the meeting series.
Vicent J. Martínez, Enn Saar
openaire   +3 more sources

High‐Density Boron Nitride Nanotube Composites via Surfactant‐Stabilized Lyotropic Liquid Crystals for Enhanced Space Radiation Shielding

Advanced Functional Materials, EarlyView.
High‐density BNNT films, enabling mechanical robustness and high space radiation shielding effectiveness, are fabricated using surfactant‐stabilized BNNT liquid crystal. Simulations indicate that a 50 g cm−2 BNNT film can reduce radiation exposure by 56% compared to zero shielding, potentially doubling the duration of astronaut missions on the lunar ...
Young‐Kyeong Kim, Ik Jae Lim, Hongjin Lim, Yongbi Joo, Jueun Park, Md Monir Hossain, Hyunjin Cho, Nam‐Ho You, Seokhoon Ahn, Hunsu Lee, Sang Seok Lee, Yongho Joo, Se Youn Moon, Hee Il Yoo, Calista Lum, Cheol Park, Siyoung Q. Choi, Se Gyu Jang   +17 more
wiley   +1 more source

COSMIC: A Galaxy Cluster–Finding Algorithm Using Machine Learning

The Astrophysical Journal Supplement Series
Building a comprehensive catalog of galaxy clusters is a fundamental task for studies on structure formation and galaxy evolution. In this paper, we present Cluster Optical Search using Machine Intelligence in Catalogs (COSMIC), an algorithm utilizing ...
Da-Chuan Tian, Yang Yang, Zhong-Lue Wen, Jun-Qing Xia   +3 more
doaj   +1 more source

Infalling groups and galaxy transformations in the cluster A2142

, 2017
We study galaxy populations and search for possible merging substructures in the rich galaxy cluster A2142. Normal mixture modelling revealed in A2142 several infalling galaxy groups and subclusters.
Deshev, Boris, Einasto, Jaan, Einasto, Maret, Gramann, Mirt, Heinämäki, Pekka, Kipper, Rain, Lietzen, Heidi, Park, Changbom, Saar, Enn, Tempel, Elmo   +9 more
core   +1 more source

Witnessing the formation of a brightest cluster galaxy at z>2 [PDF]

, 2006
We present deep observations taken with the HST Advanced Camera for Surveys of the central massive galaxy in a forming cluster at z=2.2. The galaxy hosting the powerful radio source MRC 1138-262 is associated with one of the most extensive merger systems
Bahcall, Blakeslee, Canalizo, Cowie, Croton, De Breuck, Dubinski, Dunlop, Ford, Gao, George K. Miley, Haiman, Haiman, Heckman, Holland C. Ford, Kaiser, Kauffmann, Kurk, Kurk, Miley, Miley, Mullis, Nesvadba, Overzier, Pentericci, Pentericci, Pentericci, Pentericci, Roderik A. Overzier, Springel, Stanford, Straughn, Taniguchi, Taniguchi, Venemans, Venemans, Venemans, Villar-Martı´n, West   +38 more
core   +2 more sources