Results 41 to 50 of about 59,378 (245)

LINEAR SUBSTRUCTURES IN GALAXY CLUSTERS

open access: yesOdessa Astronomical Publications, 2019
We propose detailed scheme that is describing the morphology of linear substructures in galaxy clusters. Our base morphological scheme di- vides galaxy clusters using numerical criteria according the parameters: concentration to the cluster center, the ...
E. Panko   +3 more
doaj   +1 more source

The Origin of the Brightest Cluster Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1998
Most clusters and groups of galaxies contain a giant elliptical galaxy in their centres which far outshines and outweighs normal ellipticals. The origin of these brightest cluster galaxies is intimately related to the collapse and formation of the cluster. Using an N-body simulation of a cluster of galaxies in a hierarchical cosmological model, we show
openaire   +4 more sources

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

open access: yesOdessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source

Diversity in the stellar velocity dispersion profiles of a large sample of brightest cluster galaxies z ≤ 0.3 [PDF]

open access: yes, 2018
We analyse spatially-resolved deep optical spectroscopy of Brightest Cluster Galaxies (BCGs) located in 32 massive clusters with redshifts of 0.05 $\leq z \leq$ 0.30, to investigate their velocity dispersion profiles.
S. I. Loubser   +3 more
semanticscholar   +1 more source

Cluster Selection and the Evolution of Brightest Cluster Galaxies

open access: yesThe Astrophysical Journal, 2000
Accepted for publication in ApJL. 4 pages including 4 figures, uses emulateapj.sty (included)
Chris A. Collins   +6 more
openaire   +4 more sources

The Initial Mass Function and Other Stellar Properties Across the Core of the Hydra I Cluster

open access: yesThe Astrophysical Journal, 2023
The Hydra I cluster offers an excellent opportunity to study and compare the relic old stellar populations in the core of its two brightest galaxies. In addition, the differing kinematics of the two galaxies allows a test of the local validity of general
Ilaria Lonoce   +2 more
doaj   +1 more source

THE DETERMINATION OF THE MORPHOLOGICAL TYPES OF GALAXY CLUSTERS USING CLUSTER CARTOGRAPHY

open access: yesOdessa Astronomical Publications, 2016
We discuss the possibility of using the Cluster Cartography set for the determined the morphological types of galaxy clusters. The applied morphological scheme was proposed by Panko (2013).
E. A. Panko, S. I. Emelyanov
doaj   +1 more source

The ROSAT Brightest Cluster Sample — III. Optical spectra of the central cluster galaxies [PDF]

open access: yes, 1999
We present new spectra of dominant galaxies in X-ray selected clusters of galaxies, which combine with our previously published spectra to form a sample of 256 dominant galaxies in 215 clusters.
C. Crawford   +9 more
semanticscholar   +1 more source

GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES. III. BEYOND BIMODALITY [PDF]

open access: yes, 2016
We present new deep photometry of the rich globular cluster (GC) systems around the Brightest Cluster Galaxies UGC 9799 (Abell 2052) and UGC 10143 (Abell 2147), obtained with the Hubble Space Telescope (HST) ACS and WFC3 cameras.
W. Harris   +6 more
semanticscholar   +1 more source

DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS

open access: yesOdessa 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

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