Results 41 to 50 of about 2,402,391 (371)
ON THE DETERMINATION OF GALAXY STRUCTURE ELLIPTICITY
Odessa Astronomical Publications, 2007 We discuss factors influencing the determination of the observed shape of galaxy clusters when the covariance ellipse method is involved. The analysis of 377 Abell clusters show that at greater distances from the cluster center the ellipticity is rather ...
M. Biernacka +3 more
doaj +1 more source
Deep Synoptic Array Science: Two Fast Radio Burst Sources in Massive Galaxy Clusters
The Astrophysical Journal Letters, 2023 The hot gas that constitutes the intracluster medium (ICM) has been studied at X-ray and millimeter/submillimeter wavelengths (Sunyaev–Zel’dovich effect) for decades.
Liam Connor +24 more
doaj +1 more source
Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]
, 2000 The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
Adabi M. G. +16 more
core +4 more sources
Cosmology with Clusters of Galaxies [PDF]
Particle Physics and the Universe, 2000 I show that three independent methods utilizing clusters of galaxies - cluster dynamics and mass-to-light ratio, baryon fraction in clusters, and cluster evolution - all indicate the same robust result: the mass-density of the universe is low, Omega ~ 0.2, and the mass approximately traces light on large scales.
openaire +6 more sources
Galaxy Dynamics in Clusters [PDF]
The Astrophysical Journal, 1996 30 pages, self-unpacking (via uufiles) postscript file without figures. Eighteen figures (and slick color version of figure 3) and entire paper available at ftp://oahu.physics.lsa.umich.edu/groups/astro/fews Total size of paper with figures is ~9.0 Mb uncompressed. Submitted to Ap.J.
Carlos S. Frenk +6 more
openaire +4 more sources
DISCOVERY OF A GALAXY CLUSTER WITH A VIOLENTLY STARBURSTING CORE AT z = 2.506 [PDF]
, 2016 We report the discovery of a remarkable concentration of massive galaxies with extended X-ray emission at zspec = 2.506, which contains 11 massive (M* ≳ 1011 M⊙) galaxies in the central 80 kpc region (11.6σ overdensity).
Tao Wang +19 more
semanticscholar +1 more source
THE UBIQUITY OF COEVAL STARBURSTS IN MASSIVE GALAXY CLUSTER PROGENITORS [PDF]
, 2016 The universe’s largest galaxy clusters likely built the majority of their massive >1011 M galaxies in simultaneous, short-lived bursts of activity well before virialization.
C. Casey
semanticscholar +1 more source
The Way to Quench: Galaxy evolution in Abell 2142 [PDF]
, 2023 We show how the star formation activity of galaxies is progressively inhibited from the outer region to the center of the massive cluster A2142. From an extended spectroscopic redshift survey of 2239 galaxies covering a circular area of radius $\sim 11$~Mpc from the cluster center, we extract a sample of 333 galaxies with known stellar mass, star ...
arxiv +1 more source
The Galaxy Cluster Merger Catalog: An Online Repository of Mock Observations from Simulated Galaxy Cluster Mergers [PDF]
, 2016 We present the “Galaxy Cluster Merger Catalog.” This catalog provides an extensive suite of mock observations and related data for N-body and hydrodynamical simulations of galaxy cluster mergers and clusters from cosmological simulations.
J. Zuhone +4 more
semanticscholar +1 more source
Unidentified line in x-ray spectra of the Andromeda galaxy and Perseus galaxy cluster. [PDF]
Physical Review Letters, 2014 We report a weak line at 3.52±0.02 keV in x-ray spectra of the Andromeda galaxy and the Perseus galaxy cluster observed by the metal-oxide-silicon (MOS) and p-n (PN) CCD cameras of the XMM-Newton telescope.
A. Boyarsky +3 more
semanticscholar +1 more source