Results 131 to 140 of about 12,793,373 (294)
The Astrophysical Journal Supplement SeriesWe used the Condor Array Telescope to obtain deep imaging observations through the luminance broadband and He ii 468.6 nm, [O iii ] 500.7 nm, He i 587.5 nm, H α , [N ii ] 658.4 nm, and [S ii ] 671.6 nm narrowband filters of an extended region comprising ...
Kenneth M. Lanzetta +5 more
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The cosmological constant derived via galaxy groups and clusters
European Physical Journal C: Particles and Fields, 2019 The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$ Λ enters the weak-field General Relativity following from Newton theorem on the ...
V. G. Gurzadyan, A. Stepanian
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A volume-limited sample of X-ray galaxy groups and clusters – I. Radial entropy and cooling time profiles [PDF]
, 2013 We present the first results of our study of a sample of 101 X-ray galaxy groups and clusters, which is volume-limited in each of three X-ray luminosity bins. The aim of this work is to study the properties of the innermost ICM in the cores of our groups
E. Panagoulia, A. Fabian, J. Sanders
semanticscholar +1 more source
The Astrophysical JournalWe present deep, wideband multifrequency radio observations (144 MHz−8 GHz) of the remarkable galaxy group NGC 741, which yield crucial insights into the interaction between the infalling head-tail radio galaxy (NGC 742) and the main group.
K. Rajpurohit +19 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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EVOLUTION IN THE H i GAS CONTENT OF GALAXY GROUPS: PRE-PROCESSING AND MASS ASSEMBLY IN THE CURRENT EPOCH [PDF]
, 2013 We present an analysis of the neutral hydrogen (H i) content and distribution of galaxies in groups as a function of their parent dark matter halo mass. The Arecibo Legacy Fast ALFA survey α.40 data release allows us, for the first time, to study the H i
K. Hess, E. Wilcots
semanticscholar +1 more source
GalaxiesThis review examines the relationship between black hole activity and kinematic gas–star misalignment in brightest group galaxies (BGGs) with different merger rates.
Mojtaba Raouf +2 more
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Correlation Function of Galaxy Groups
, 2000 We use the Updated Zwicky Catalog of galaxies (Falco et al. 1999) to generate a catalog of groups, by means of a friend-of-friend algorithm. The correlation length of the total sample is well fitted with a power law $ \xi(r)=(r/r_0)^\gamma $ with ...
Barrow J. D. +7 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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Evolution of the Physical Properties of the Most Massive Galaxies in Clusters and Their Protohalos
The Astrophysical JournalWe investigated the evolution of the physical properties of the brightest galaxies in clusters and their protohalos from z = 4 to z = 0. Galaxy clusters and groups are identified using a halo-based group finder applied to the COSMOS2020 galaxy catalog ...
Qingyang Li +9 more
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