Results 21 to 30 of about 5,809 (203)
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
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ON THE BARYON FRACTIONS IN CLUSTERS AND GROUPS OF GALAXIES [PDF]
The Astrophysical Journal, 2010 We present the baryon fractions of 2MASS groups and clusters as a function of cluster richness using total and gas masses measured from stacked ROSAT X-ray data and stellar masses estimated from the infrared galaxy catalogs. We detect X-ray emission even in the outskirts of clusters, beyond r_200 for richness classes with X-ray temperatures above 1 keV.
Dai, Xinyu +3 more
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ФОРМЫ ТРЕХКОМПОНЕНТНЫХ СВЕРХСКОПЛЕНИЙ ГАЛАКТИК
Odessa Astronomical Publications, 2011 We analyzed the shapes of galaxy superclusters, contains only 3 galaxy clusters. The superclusters were found using PF Catalogue Galaxy Clusters and Groups covering 5000 square degrees as input data.
Е. А. Панько
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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
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THE GALAXY CONTENT OF SDSS CLUSTERS AND GROUPS [PDF]
The Astrophysical Journal, 2009 Imaging data from the Sloan Digital Sky Survey are used to characterize the population of galaxies in groups and clusters detected with the MaxBCG algorithm. We investigate the dependence of Brightest Cluster Galaxy (BCG) luminosity, and the distributions of satellite galaxy luminosity and satellite color, on cluster properties over the redshift range ...
Hansen, Sarah M. +3 more
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Evidence for AGN Feedback in Galaxy Clusters and Groups
Advances in Astronomy, 2012 The current generation of flagship X-ray missions, Chandra and XMM-Newton, has changed our understanding of the so-called “cool-core” galaxy clusters and groups.
Myriam Gitti +2 more
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AGN Feedback in Groups and Clusters of Galaxies
, 2022 AGN feedback stands for the dramatic impact that a SMBH can make on its environment. It has become an essential element of models that describe the formation and evolution of baryons in massive virialized halos. The baryons' radiative losses in the cores of these halos might lead to massive cooling and vigorous star formation on the order of 10-1000 ...
Hlavacek-Larrondo, J. +2 more
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Galaxy structures — groups, clusters and superclusters [PDF]
International Journal of Geometric Methods in Modern Physics, 2014 We provide a brief summary of the history of galaxy structure studies. We also introduce several large-scale redshift surveys and summarize the most commonly used methods to identify the groups and clusters of galaxies. We present several catalogs of galaxy groups. These catalogs can be used to study the galaxy groups in different environments.
Sepp, Tiit, Gramann, Mirt
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Galaxy clusters and groups in the ALHAMBRA survey [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We present a catalogue of 348 galaxy clusters and groups with $0 ...
Ascaso, B. +37 more
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How special are brightest group and cluster galaxies? [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Abstract We use the Sloan Digital Sky Survey (SDSS) to construct a sample of 625 brightest group and cluster galaxies (BCGs) together with control samples of non-BCGs matched in stellar mass, redshift and colour. We investigate how the systematic properties of BCGs depend on stellar mass and on their privileged location near the cluster ...
von der Linden, Anja +3 more
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