Results 21 to 30 of about 2,697,066 (301)
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
Iron as a tracer in galaxy clusters and groups [PDF]
The Astrophysical Journal, 1997 Available X-ray data are collected and organized concerning the iron and gas content of galaxy clusters and groups, together with the optical luminosity, mass and iron abundance of cluster galaxies.
Allen S. W. +22 more
core +6 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
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
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
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
Kinematics of the diffuse intragroup and intracluster light in groups and clusters of galaxies in the local universe within 100 Mpc distance [PDF]
Frontiers in Astronomy and Space Sciences, 2022 Nearly all intragroup (IGL) and intracluster light (ICL) comes from stars that are not bound to any single galaxy but were formed in galaxies and later unbound from them.
Magda Arnaboldi, Ortwin Gerhard
doaj +2 more sources
Density profiles of galaxy groups and clusters from SDSS galaxy-galaxy weak lensing [PDF]
, 2006 We present results of a measurement of the shape of the density profile of galaxy groups and clusters traced by 43 335 Luminous Red Galaxies (LRGs) with spectroscopic redshifts from the Sloan Digital Sky Survey (SDSS). The galaxies are selected such that
Rachel Mandelbaum +5 more
openalex +3 more sources
The colours of satellite galaxies in groups and clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the ram pressure stripping of their hot gaseous atmospheres as the satellites orbit within their parent halo. We incorporate a model of the stripping process based
Andreea S. Font +8 more
openalex +7 more sources
Evidence for AGN Feedback in Galaxy Clusters and Groups [PDF]
Advances in Astronomy, 2012 The current generation of flagship X-ray missions, Chandra and XMM-Newton, has changed our understanding of the so-called “cool-core” galaxy clusters and groups.
Myriam Gitti +2 more
doaj +3 more sources