scholarly journals Peculiar motions of galaxy clusters in the regions of super clusters of galaxies

2021 ◽  
pp. 105-110
Author(s):  
F. G. KOPYLOVA ◽  
A .I. KOPYLOV
Keyword(s):  
Galaxy Clusters ◽  
Clusters Of Galaxies ◽  
Early Type ◽  
Groups Of Galaxies ◽  
Peculiar Velocities ◽  
Data Release

We present results of the study of peculiar motions of 57 clusters and groups of galaxies in the regions of the Corona Borealis (CrB), Bootes (Boo), Z 5029/A 1424, A 1190, A 1750/A 1809 superclusters of galaxies and 20 galaxy clusters located beyond massive structures (0.05 z 0.10). Using the SDSS Data Release 8 data, a sample of early-type galaxies was compiled in the systems under study, their Fundamental Planes (FP) were built and relative distances and peculiar velocities were determined.

scholarly journals Superclustering and Motion of Galaxy Clusters*

1988 ◽  
Vol 130 ◽  
pp. 229-238
Author(s):  
Neta A. Bahcall
Keyword(s):  
Dark Matter ◽  
Spatial Distribution ◽  
Shell Model ◽  
Galaxy Clusters ◽  
Large Scale ◽  
Clusters Of Galaxies ◽  
Large Scale Structures ◽  
Peculiar Velocities ◽  
Scale Structures ◽  
Shell Intersections

The evidence for the existence of very large scale structures, ∼ 100h−1 Mpc in size, as derived from the spatial distribution of clusters of galaxies is summarized. A “shell model” of galaxy clustering is described in which clusters of galaxies are located at shell intersections; the model yields results consistent with cluster observations. Detection of a ∼ 2000 km s−1 elongation in the redshift direction in the distribution of the clusters is also described. Possible causes of the effect are peculiar velocities of clusters on scales of 10–100h−1 Mpc and geometrical elongation of superclusters. If the effect is entirely due to the peculiar velocities of clusters, then superclusters have masses of order 1016,5M⊙ and may contain a larger amount of dark matter than previously anticipated.

scholarly journals Peculiar velocities of supernovae Ia in clusters of galaxies

2021 ◽  
Author(s):  
E. A. Balakina ◽  
◽  
M. V. Pruzhinskaya ◽  
◽  
Keyword(s):  
Gravitational Field ◽  
Galaxy Clusters ◽  
Cosmological Parameters ◽  
Hubble Constant ◽  
Clusters Of Galaxies ◽  
Host Galaxies ◽  
Hubble Diagram ◽  
Peculiar Velocities ◽  
A Value ◽  
Accuracy Of Measurements

Observations of supernovae Ia make it possible to estimate the values of cosmological parameters using the Hubble diagram. First of all, such observations give us a value of the Hubble constant, which is one of the most important cosmological parameters. Improving the accuracy of measurements of this parameter is a priority for modern cosmological analysis. Therefore, it is necessary to take into account the influence of the peculiar velocities of supernovae Ia on the measurement of the redshift, which is used in constructing the Hubble diagram. We study the contribution of peculiar velocities due to the motion of host galaxies in the gravitational field of galaxy clusters for a cosmological sample of supernovae Pantheon.

scholarly journals Environmental Effects in Galaxy Clusters: Infalling Groups in Abell 85 and 1367

2010 ◽  
Vol 6 (S277) ◽  
pp. 296-299
Author(s):  
H. Bravo-Alfaro ◽  
T. C. Scott ◽  
E. Brinks ◽  
L. Cortese ◽  
P. Granados ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Environmental Effects ◽  
Compact Groups ◽  
Late Type ◽  
Gravitational Effects ◽  
Groups Of Galaxies ◽  
Preliminary Results ◽  
Nir Imaging ◽  
Gaseous Component ◽  
Global Cluster

AbstractWe are carrying out a multifrequency survey of late type galaxies in nearby clusters with the aim to investigate the effects exerted by both the very local and the global cluster environments. We report new VLA-HI images of galaxies in Abell 1367 and study the evolution of their gaseous component. In Abell 85 we perform a deep NIR imaging survey of the brightest spirals projected up to 1.0 Abell radius with the aim of unveiling possible gravitational effects on their stellar disks. Here we show preliminary results of these projects, mainly focused on infalling compact groups of galaxies moving towards their respective cluster centers.

scholarly journals Correlation between v sin i and the Peculiar Velocities of Be Stars

2004 ◽  
Vol 215 ◽  
pp. 85-86
Author(s):  
J. Zorec ◽  
J. Chauville ◽  
R. Levenhagen ◽  
N. V. Leister ◽  
D. Ballereau
Keyword(s):  
Be Stars ◽  
Early Type ◽  
Peculiar Velocities

Rough indications that v sin i is correlated with peculiar velocities exist only in the range of early-type Be Stars. Further corrections of space velocities of Be Stars for systematic movements of stellar groups to which they belong, as well as identifications of coeval stars have to be performed in order to decide whether the high rotation of some of them could be the consequence of gravitational encounters.

scholarly journals Groups of galaxies in the SDSS Data Release 5

2008 ◽  
Vol 479 (3) ◽  
pp. 927-937 ◽  
Author(s):  
E. Tago ◽  
J. Einasto ◽  
E. Saar ◽  
E. Tempel ◽  
M. Einasto ◽  
...  
Keyword(s):  
Groups Of Galaxies ◽  
Data Release

scholarly journals Large-Scale Structure in the Universe: Spatial Distribution and Peculiar Velocities

1987 ◽  
Vol 124 ◽  
pp. 335-348
Author(s):  
Neta A. Bahcall
Keyword(s):  
Dark Matter ◽  
Spatial Distribution ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Clusters Of Galaxies ◽  
Large Scale Structures ◽  
Peculiar Velocities ◽  
Scale Structures ◽  
The Universe

The evidence for the existence of very large scale structures, ∼ 100h−1Mpc in size, as derived from the spatial distribution of clusters of galaxies is summarized. Detection of a ∼ 2000 kms−1 elongation in the redshift direction in the distribution of the clusters is also described. Possible causes of the effect are peculiar velocities of clusters on scales of 10–100h−1Mpc and geometrical elongation of superclusters. If the effect is entirely due to the peculiar velocities of clusters, then superclusters have masses of order 1016.5M⊙ and may contain a larger amount of dark matter than previously anticipated.

scholarly journals The peculiar motions of early-type galaxies in two distant regions -- VII. Peculiar velocities and bulk motions

2001 ◽  
Vol 321 (2) ◽  
pp. 277-305 ◽  
Author(s):  
M. Colless ◽  
R. P. Saglia ◽  
D. Burstein ◽  
R. L. Davies ◽  
R. K. McMahan ◽  
...  
Keyword(s):  
Early Type ◽  
Peculiar Velocities

scholarly journals Clusters of Galaxies

1980 ◽  
Vol 5 ◽  
pp. 699-714 ◽  
Author(s):  
Neta A. Bahcall
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Clusters Of Galaxies ◽  
Groups Of Galaxies ◽  
Formation And Evolution ◽  
The Rich ◽  
The Many ◽  
The Universe

AbstractClusters and groups of galaxies contain the majority of galaxies in the universe. The rich clusters, while less numerous than the many poor groups, are the densest and largest systems known, and can be easily recognized and studied even at relatively large distances. Their study is important for understanding the formation and evolution of clusters and galaxies, and for a determination of the large-scale structure in the universe.

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