Results 51 to 60 of about 67,335 (316)
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 +4 more sources
Investigating the Relation between Galaxy Properties and the Gaussianity of the Velocity Distribution of Groups and Clusters [PDF]
, 2017 We investigate the dependence of stellar population properties of galaxies on group dynamical stage for a subsample of the Yang catalog. We classify groups according to their galaxy velocity distribution into Gaussian (G) and Non-Gaussian (NG). Using two
R. Carvalho +5 more
semanticscholar +1 more source
The similarity of the stellar mass fractions of galaxy groups and clusters [PDF]
, 2013 We employ a large sample of 20171 optically-selected groups and clusters at 0.15 < z < 0.4 in the SDSS to investigate how the stacked stellar mass fraction varies across a wide range of total mass, $M_{500}$.
J. M. Budzynski +3 more
semanticscholar +1 more source
Dynamical segregation of galaxies into groups and clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We have performed a systematic analysis of the dynamics of different galaxy populations in galaxy groups from the 2dFGRS. For this purpose we have combined all the groups into a single system, where velocities v and radius r are expressed adimensionally.
Ariel G. Sánchez +2 more
openaire +3 more sources
THE PECULIARITIES IN O-TYPE GALAXY CLUSTERS
Odessa Astronomical Publications, 2017 We present the results of analysis of 2D distribution of galaxies in galaxy cluster fields. The Catalogue of Galaxy Clusters and Groups PF (Panko & Flin) was used as input observational data set.
E. A. Panko, S. I. Emelyanov
doaj +1 more source
Gas expulsion by quasar-driven winds as a solution to the overcooling problem in galaxy groups and clusters [PDF]
, 2010 Galaxy groups are not scaled down versions of massive galaxy clusters - the hot gas in groups (known as the intragroup medium, IGrM for short) is, on average, less dense than the intracluster medium, implying that one or more non-gravitational processes (
I. McCarthy +6 more
semanticscholar +1 more source
THE CRITERIA FOR MORPHOLOGICAL CLASSIFICATION OF PF GALAXY CLUSTERS
Odessa Astronomical Publications, 2013 The morphological types of galaxy clusters resulting from their out ward appearance is physically related to the clusters and their member galaxies. Presented here is an adopted system of morphological types of galaxy clusters based on the Zwicky, Boutz ...
E. A. Panko
doaj +1 more source
Exploring diffuse radio emission in galaxy clusters and groups with uGMRT and SKA [PDF]
Journal of astrophysics and astronomy, 2022 Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic particles in the large scale structure of the Universe.
S. Paul +15 more
semanticscholar +1 more source
DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS
Odessa Astronomical Publications, 2018 The results of the detailed analysis of the 2D distribution of galaxies in 28 rich galaxy clusters with significant concentration to the cluster center are present.
E. Panko, A. Sirginava, A. Stepaniuk
doaj +1 more source
AEGIS: Chandra Observation of DEEP2 Galaxy Groups and Clusters [PDF]
, 2006 We present a 200 ksec Chandra observation of seven spectroscopically selected, high redshift (0.75 < z < 1.03) galaxy groups and clusters discovered by the DEEP2 Galaxy Redshift Survey in the Extended Groth Strip (EGS). X-ray emission at the locations of
Alison L. Coil +13 more
core +2 more sources