Results 61 to 70 of about 2,697,066 (301)

The Effect of Age on the Grouping of Open Clusters: II—Are There Old Binary Clusters?

open access: yesUniverse, 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

LoTSS jellyfish galaxies: II. Ram pressure stripping in groups versus clusters [PDF]

open access: yesA&A 652, A153 (2021), 2021
Numerous examples of ram pressure stripping in galaxy clusters are present in literature; however, substantially less work has been focused on ram pressure stripping in lower mass groups. In this work we use the LOFAR Two-metre Sky Survey (LoTSS) to search for jellyfish galaxies in ~500 SDSS groups (z<0.05), making this the most comprehensive search ...
arxiv   +1 more source

The 2dF Galaxy Redshift Survey: the clustering of galaxy groups [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
16 pages.
Terry J. Bridges   +31 more
openaire   +8 more sources

THE ROLE OF POOR GALAXY CLUSTERS FOR STUDYING SUPERCLUSTER STRUCTURE

open access: yesOdessa Astronomical Publications, 2008
The distribution of galaxy clusters is analyzed in regions of 6 galaxy superclusters with both measured and estimated redshifts. The positions of ACO and APM galaxy clusters in the regions are compared with the positions of galaxy clusters and groups ...
E. A. Panko
doaj   +1 more source

Quenched galaxies in clusters of galaxies and their outskirts [PDF]

open access: yespublished in the Astrophysical Bulletin, 2020, 75, 4, 424-432, 2021
Based on the SDSS data, the properties of galaxies with quenched star formation (QGs) within the "splashback"-radius of galaxy clusters $R_{\rm sp}$ and beyond it have been studied. We used a sample of 40 groups and galaxy clusters and a sample of field galaxies at $0.02
arxiv   +1 more source

The galaxy luminosity function in groups and clusters: the faint-end upturn and the connection to the field luminosity function [PDF]

open access: yes, 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 motions of clusters and group of galaxies

open access: yesThe Astrophysical Journal, 1994
25p plaintex submitted to The Astrophysical ...
Mirt Gramann   +3 more
openaire   +4 more sources

The Three Hundred project: Galaxy groups do not survive cluster infall [PDF]

open access: yes, 2022
Galaxy clusters grow by accreting galaxies as individual objects, or as members of a galaxy group. These groups can strongly impact galaxy evolution, stripping the gas from galaxies, and enhancing the rate of galaxy mergers. However, it is not clear how the dynamics and structure of groups are affected when they interact with a large cluster, or ...
arxiv   +1 more source

Investigating the Relation between Galaxy Properties and the Gaussianity of the Velocity Distribution of Groups and Clusters [PDF]

open access: yes, 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 in Groups and Clusters of Galaxies [PDF]

open access: yesAstrophysics 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

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