Results 111 to 120 of about 12,793,373 (294)
Galaxy groups in the 2dF Galaxy Redshift Survey: a compactness analysis of groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 A comprehensive study on compactness has been carried out on the 2dF Galaxy Group Catalogue constructed by Merch n & Zandivarez. The compactness indexes defined in this work take into account different geometrical constraints in order to explore a wide range of possibilities.
C. J. Ragone +4 more
openaire +4 more sources
Intracluster medium cooling, AGN feedback, and brightest cluster galaxy properties of galaxy groups - Five properties where groups differ from clusters [PDF]
, 2014 Aims. We aim to investigate cool-core and non-cool-core properties of galaxy groups through X-ray data and compare them to the AGN radio output to understand the network of intracluster medium (ICM) cooling and feedback by supermassive black holes.
V. Bharadwaj +5 more
semanticscholar +1 more source
Metallicity structure in X-ray bright galaxy groups
, 2006 Using Chandra X-ray data of a sample of 15 X-ray bright galaxy groups, we present preliminary results of a coherent study of the radial distribution of metal abundances in the hot gas in groups.
A. Finoguenov +6 more
core +1 more source
The Luminosity Function in Groups of Galaxies [PDF]
EAS Publications Series, 2011 4 pages, 4 figures.
openaire +3 more sources
Supernovae in isolated galaxies, in pairs and in groups of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 In order to investigate the influence of the environment on the supernova (SN) production we have performed a statistical investigation of the SNe discovered in isolated galaxies, in pairs and in groups of galaxies. 22 SNe in 18 isolated galaxies, 48 SNe in 40 galaxies members of 37 pairs and 211 SNe in 170 galaxies members of 116 groups have been ...
A. R. Petrosian +4 more
openaire +4 more sources
maggie: Models and Algorithms for Galaxy Groups, Interlopers and Environment [PDF]
, 2014 Redshift distortions make it notoriously difficult to recover real-space galaxy groups from redshift space data. We make use of the previously measured universal distribution of halo interlopers in projected phase space, which we combine with our ...
M. Duarte, G. Mamon
semanticscholar +1 more source
Properties of intra-group stars and galaxies in galaxy groups: ‘normal’ versus ‘fossil’ groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Cosmological LCDM simulations of 12 M_vir~10^14 Msun galaxy groups have been performed, invoking star formation, chemical evolution with non-instantaneous recycling, metallicity dependent radiative cooling, strong star-burst driven galactic super-winds and effects of a meta-galactic UV field. At z=0, intra-group light (IGL) fractions are found to be 12-
openaire +4 more sources
The properties of fossil groups of galaxies [PDF]
Astronomische Nachrichten, 2009 AbstractNumerical simulations as well as optical and X‐ray observations over the last few years have shown that poor groups of galaxies can evolve to what is called a fossil group. Dynamical friction as the driving process leads to the coalescence of individual galaxies in ordinary poor groups leaving behind nothing more than a central, massive ...
Paul Eigenthaler, Werner W. Zeilinger
openaire +4 more sources
Mass-segregation trends in SDSS galaxy groups. [PDF]
, 2014 It has been shown that galaxy properties depend strongly on their host environment. In order to understand the relevant physical processes driving galaxy evolution it is important to study the observed properties of galaxies in different environments ...
I. Roberts +3 more
semanticscholar +1 more source
The Astrophysical JournalWe present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D.
Ewan O’Sullivan +7 more
doaj +1 more source