Results 1 to 10 of about 2,742,154 (316)
The radial structure of galaxy groups and clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 Simple self-consistent models of galaxy groups and clusters are tested against the re-sults of high-resolutionadiabatic gasdynamicalsimulations.
Y. Ascasíbar +3 more
semanticscholar +10 more sources
The cosmological constant derived via galaxy groups and clusters [PDF]
European Physical Journal C: Particles and Fields, 2019 The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$ Λ enters the weak-field General Relativity following from Newton theorem on the ...
V. G. Gurzadyan, A. Stepanian
doaj +4 more sources
Individual and Group Galaxies in CNOC1 clusters [PDF]
Astrophys.J.698:83-98,2009, 2009 Using wide-field $BVR_cI$ imaging for a sample of 16 intermediate redshift ($0.17 < z < 0.55$) galaxy clusters from the Canadian Network for Observational Cosmology (CNOC1) Survey, we investigate the dependence of cluster galaxy populations and their evolution on environment.
I. H. Li, H. K. C. Yee, E. Ellingson
arxiv +7 more sources
Galaxy and Mass Assembly (GAMA): the clustering of galaxy groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 We explore the clustering of galaxy groups in the Galaxy and Mass Assembly (GAMA) survey to investigate the dependence of group bias and profile on separation scale and group mass. Due to the inherent uncertainty in estimating the group selection function, and hence the group auto-correlation function, we instead measure the projected galaxy--group ...
S D Riggs +6 more
arxiv +6 more sources
The DEEP2 Galaxy Redshift Survey: Clustering of Groups and Group Galaxies at z~1 [PDF]
Astrophys.J.638:668-685,2006, 2005 We study the clustering properties of groups and of galaxies in groups in the DEEP2 Galaxy Redshift Survey dataset at z~1. Four clustering measures are presented: 1) the group correlation function for 460 groups with estimated velocity dispersions of sigma>200 km/s, 2) the galaxy correlation for the full galaxy sample, using a flux-limited sample of ...
Alison L. Coil +9 more
arxiv +3 more sources
Scaling Properties of Galaxy Groups [PDF]
Universe, 2021 Galaxy groups and poor clusters are more common than rich clusters, and host the largest fraction of matter content in the Universe. Hence, their studies are key to understand the gravitational and thermal evolution of the bulk of the cosmic matter ...
Lorenzo Lovisari +3 more
doaj +2 more sources
Diffuse Baryons in Groups and Clusters of Galaxies [PDF]
The Astrophysical Journal, 1998 To predict the X-ray observables associated to the diffuse baryons in clusters of galaxies, we develop a new physical approach to model such a hot intra-cluster plasma. Such approach is based on punctuated equilibria. and comprises the following blocks: Monte Carlo ``merging histories'' of dark matter potential wells; the central hydrostatic ...
A. Cavaliere, N. Menci, P. Tozzi
openalex +5 more sources
Dark Matter in Groups and Clusters of Galaxies [PDF]
International Astronomical Union Colloquium, 2000 AbstractWe compare the characteristics of stellar populations with those of dark halos. Dark matter around galaxies, and in groups, clusters and voids is discussed. Modern data suggest that the overall density of matter in the Universe is ΩM = 0.3 ± 0.1, about 80 % of this matter is nonbaryonic dark matter, and about 20 % is baryonic, mostly in the ...
J. Einasto, M. Einasto
openalex +4 more sources
Star Clusters in Local Group Galaxies [PDF]
2000, "Massive Stellar Clusters", ASP Conf. Ser. Vol. 211, eds. A.
Lancon & C. Boily (Provo:ASP), 262-269, 1999 In about 40% of the Local Group galaxies star clusters have been detected so far, but the census is still incomplete. The properties of these clusters are briefly reviewed, and the impact of galaxy environment on the evolution and survival of star clusters is discussed.
E. K. Grebel
arxiv +3 more sources
The faint light in groups and clusters of galaxies [PDF]
Nature Astronomy, 2022 The diffuse light that spreads through groups and clusters of galaxies is made of free-floating stars not bound to any galaxy. This is known as the intracluster light (ICL) and holds important clues for understanding the evolution of these large ...
M. Montes
semanticscholar +3 more sources