Results 71 to 80 of about 60,718 (195)
The Clustering of SDSS Galaxy Groups: Mass and Color Dependence [PDF]
The Astrophysical Journal, 2008 16 pages, 14 figures, Accepted for publication in ApJ. In the new version, we add the bias of the shuffled galaxy sample.
Wang, Y +5 more
openaire +4 more sources
Filaments of galaxies and Voronoi diagrams
Open Astronomy, 2018 The intersections between a spherical shell and the faces of Voronoi polyhedrons are numerically evaluated. The nodes of these intersections are the points that share the same distances from three nuclei.
Zaninetti Lorenzo
doaj +1 more source
NUMERICAL ESTIMATOR FOR LARGE-SCALE COSMIC STRUCTURES
Odessa Astronomical Publications, 2018 Components of large-scale structure (LSS) of Universe includes galaxy clusters , walls , filaments , groups and field galaxies. The question of spatial organization of all these components remains open despite of a number of recently developed methods of
A. V. Tugay, N. G. Pulatova, A. D. Zhoga
doaj +1 more source
Some Properties of Galaxy Structures
Open Astronomy, 2011 We analysed some properties of galaxies structures based on the PF catalog of galaxy structures (Panko & Flin 2006) and the Tully NBG catalog (Tully 1988).
Flin Piotr +4 more
doaj +1 more source
Integrated HI emission in galaxy groups and clusters
, 2017 The integrated HI emission from hierarchical structures such as groups and clusters of galaxies can be detected by FAST at intermediate redshifts. Here we propose to use FAST to study the evolution of the global HI content of clusters and groups over ...
Ai, Mei, Fu, Jian, Zhu, Ming
core +1 more source
A statistical study of the luminosity gap in galaxy groups
, 2010 The luminosity gap between the two brightest members of galaxy groups and clusters is thought to offer a strong test for the models of galaxy formation and evolution.
Ghanbari, Jamshid +4 more
core +1 more source
Gas in Groups and Clusters of Galaxies [PDF]
Astrophysics and Space Science, 2004 Groups and clusters contain a large fraction of hot gas which emits X-ray radiation. This gas yields information on the dynamical state and on the total mass of these systems. X-ray spectra show that heavy elements are present in the gas. As these metals must have been produced in the cluster/group galaxies and later transported into the gas, the ...
openaire +3 more sources
Extended Radio Emission in the Perhipheral Regions of the Shapley Concentration Core
Galaxies, 2017 The Shapley Concentration (SC) is a galaxy supercluster (few tens of degrees) in the Local Universe (<z>∼0.048) which is currently undergoing cluster mergers and group accretion.
Tiziana Venturi +6 more
doaj +1 more source
The Outer Halos of Very Massive Galaxies: BCGs and their DSC in the Magneticum Simulations
Galaxies, 2017 Recent hydrodynamic cosmological simulations cover volumes up to Gpc 3 and resolve halos across a wide range of masses and environments, from massive galaxy clusters down to normal galaxies, while following a large variety of physical processes ...
Rhea-Silvia Remus +2 more
doaj +1 more source
Evolution of the Physical Properties of the Most Massive Galaxies in Clusters and Their Protohalos
The Astrophysical JournalWe investigated the evolution of the physical properties of the brightest galaxies in clusters and their protohalos from z = 4 to z = 0. Galaxy clusters and groups are identified using a halo-based group finder applied to the COSMOS2020 galaxy catalog ...
Qingyang Li +9 more
doaj +1 more source