Results 1 to 10 of about 2,697,066 (301)
Pre-Processing and Post-Processing in Group-Cluster Mergers [PDF]
, 2013 Galaxies in clusters are more likely to be of early type and to have lower star formation rates than galaxies in the field. Recent observations and simulations suggest that cluster galaxies may be `pre-processed' by group or filament environments and that galaxies that fall into a cluster as part of a larger group can stay coherent within the cluster ...
arxiv +1 more source
Shell-like structures in our cosmic neighbourhood
, 2016 Signatures of the processes in the early Universe are imprinted in the cosmic web. Some of them may define shell-like structures characterised by typical scales.
Arnalte-Mur, P. +8 more
core +1 more source
Infant Galaxy Clusters at Low Redshifts? [PDF]
, 2003 The population and population composition of galaxies in galaxy clusters at present reflect the mass of the clusters and the mass growth of the galaxies in the past. We investigate them for six clusters. We show that galaxies in massive clusters stopped growing at redshifts of ~4. Moreover, we find that some small galaxy clusters (groups) have too many
arxiv +1 more source
Group-cluster merging and the formation of starburst galaxies [PDF]
Astrophys.J.510:L15-L19,1999, 1998 A significant fraction of clusters of galaxies are observed to have substructure, which implies that merging between clusters and subclusters is a rather common physical process of cluster formation. It still remains unclear how cluster merging affects the evolution of cluster member galaxies.
arxiv +1 more source
Cluster detection from surface-brightness fluctuations in SDSS data [PDF]
, 2001 Galaxy clusters can be detected as surface brightness enhancements in smoothed optical surveys. This method does not require individual galaxies to be identifiable, and enables clusters to be detected out to surprisingly high redshifts, as recently ...
Aragón-Salamanca +24 more
core +2 more sources
Entropy amplification from energy feedback in simulated galaxy groups and clusters [PDF]
, 2005 We use hydrodynamical simulations of galaxy clusters and groups to study the effect of pre–heating on the entropy structure of the intra–cluster medium (ICM).
S. Borgani +6 more
semanticscholar +1 more source
Gas-rich, Field Ultra-diffuse Galaxies Host Few Gobular Clusters
The Astrophysical Journal Letters, 2022 We present Hubble Space Telescope imaging of 14 gas-rich, low-surface-brightness galaxies in the field at distances of 25–36 Mpc, with mean effective radii and g -band central surface brightnesses of 1.9 kpc and 24.2 mag arcsec ^−2 .
Michael G. Jones +9 more
doaj +1 more source
The Environment of ``E+A'' Galaxies [PDF]
, 1995 The violent star formation history of ``E+A'' galaxies and their detection almost exclusively in distant clusters is frequently used to link them to the ``Butcher-Oemler effect'' and to argue that cluster environment influences galaxy evolution.
Hashimoto, Y. +7 more
core +2 more sources
Galaxy evolution near groups and clusters: ejected satellites and the spatial extent of environmental quenching [PDF]
, 2013 Galaxies that are several virial radii beyond groups/clusters show preferentially quiescent star formation rates (SFR). Using a galaxy group/cluster catalogue from the Sloan Digital Sky Survey, together with a cosmologicalN-body simulation, we examine ...
A. Wetzel +3 more
semanticscholar +1 more source
The Properties of Poor Groups of Galaxies: I. Spectroscopic Survey and Results [PDF]
Astrophys.J. 496 (1998) 39, 1997 We use multi-fiber spectroscopy of 12 nearby, poor groups of galaxies to address whether the groups are bound systems or chance projections of galaxies along the line-of-sight, why the members of each group have not already merged to form a single galaxy, despite the groups' high galaxy densities, short crossing times, and likely environments for ...
arxiv +1 more source