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
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 Effect of Age on the Grouping of Open Clusters: II—Are There Old Binary Clusters?
Universe, 2022 In the present study, we continue testing the Primordial Group hypothesis (Casado 2022), which postulates that only sufficiently young open clusters can be binary or multiple, and old clusters are essentially single.
Juan Casado
doaj +1 more source
The galaxy luminosity function in groups and clusters: the faint-end upturn and the connection to the field luminosity function [PDF]
, 2015 We characterize the luminosity functions of galaxies residing in $z\sim0$ groups and clusters over the broadest ranges of luminosity and mass reachable by the Sloan Digital Sky Survey.
Ting-Wen Lan, B. M'enard, H. Mo
semanticscholar +1 more source
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
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
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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
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
THE EFFECT OF ENVIRONMENT ON THE FORMATION OF Hα FILAMENTS AND COOL CORES IN GALAXY GROUPS AND CLUSTERS [PDF]
, 2011 We present the results of a combined X-ray and Hα study of 10 galaxy groups and 17 galaxy clusters using the Chandra X-ray Observatory and the Maryland Magellan Tunable Filter.
M. McDonald, S. Veilleux, R. Mushotzky
semanticscholar +1 more source
The eROSITA Final Equatorial-Depth Survey (eFEDS): The catalog of galaxy clusters and groups [PDF]
Astronomy & Astrophysics, 2021 The eROSITA Final Equatorial-Depth Survey has been carried out during the PV phase of the SRG/eROSITA telescope and completed in November 2019. This survey is designed to provide the first eROSITA-selected sample of galaxy clusters and groups and to test
A. Liu +33 more
semanticscholar +1 more source