Results 1 to 10 of about 2,663,862 (204)

Inferring the Mass Content of Galaxy Clusters with Satellite Kinematics and Jeans Anisotropic Modeling

open access: yesThe Astrophysical Journal
Satellite galaxies can be used to indicate the dynamic mass of galaxy groups and clusters. In this study, we apply the axisymmetric Jeans Anisotropic Multi-Gaussian Expansion ( JAM ) modeling to satellite galaxies in 28 galaxy clusters selected from the ...
Rui Shi   +9 more
doaj   +1 more source

Exploiting Machine Learning and Disequilibrium in Galaxy Clusters to Obtain a Mass Profile

open access: yesThe Astrophysical Journal Letters
We use 3D k -means clustering to characterize galaxy substructure in the A2146 cluster of galaxies ( z = 0.2343). This method objectively characterizes the cluster’s substructure using projected position and velocity data for 67 galaxies within a 2.305 ...
Mark J. Henriksen, Prajwal Panda
doaj   +1 more source

Formation Channels of Diffuse Lights in Groups and Clusters over Time

open access: yesThe Astrophysical Journal
We explore the formation of the intragroup light and intracluster light, representing diffuse lights within groups and clusters, from the point that z = 1.5.
Kyungwon Chun   +4 more
doaj   +1 more source

Are the Galaxies with Indefinitely Flat Circular Velocities Located Inside Large Dark Matter Haloes?

open access: yesUniverse
A recent study using weak gravitational lensing revealed that the rotation curves of some isolated galaxies are found at a very large distance from their galactic centres. This may provide strong evidence supporting Modified Newtonian Dynamics (MOND) and
Man Ho Chan   +2 more
doaj   +1 more source

The Complex Structure of the Abell 548–Abell 3367 Region

open access: yesAstronomy
Archival XMM and ROSAT X-Ray data are used to investigate the structure of the Abell 548–Abell 3367 region. Based on previous optical studies, this is a region likely to be rich in structure, although studies are in disagreement regarding the connection ...
Mark J. Henriksen, Layla Ahmed
doaj   +1 more source

The effect of non-gravitational gas heating in groups and clusters of galaxies [PDF]

open access: bronze, 2002
S. Borgani   +7 more
openalex   +1 more source

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