Results 21 to 30 of about 2,267,963 (287)

The Halo Mass–Temperature Relation for Clusters, Groups, and Galaxies

The Astrophysical Journal, 2023
The halo mass–temperature ( M – T ) relation for a sample of 216 galaxy clusters, groups, and individual galaxies observed by the Chandra X-ray Observatory is presented.
Iurii V. Babyk, Brian R. McNamara
doaj   +1 more source

Galaxy Orbits for Galaxy Clusters in Sloan Digital Sky Survey and 2dF Galaxy Redshift Survey [PDF]

, 2007
We present the results of a study for galaxy orbits in galaxy clusters using a spectroscopic sample of galaxies in Sloan Digital Sky Survey (SDSS) and 2dF Galaxy Redshift Survey (2dFGRS).
Adami C., Benatov L., Binney J., Biviano A., Carter D., Cavaliere A., Cole S., den Hartog R., Durret F., Hilton M., Ho Seong Hwang, Hobbs I. S., Katgert P., Myung Gyoon Lee, Natarajan P., Sharples R. M., Solanes J. M., Takahashi S., Tormen G., Uomoto A., Zwicky F.   +20 more
core   +1 more source

Weak lensing by triaxial galaxy clusters [PDF]

, 2011
Weak gravitational lensing studies of galaxy clusters often assume a spherical cluster model to simplify the analysis, but some recent studies have suggested this simplifying assumption may result in large biases in estimated cluster masses and ...
Bartelmann, Battye, Bett, Bridle, Corless, Corless, Evrard, F. Feroz, Feroz, Feroz, Feroz, Fort, Gavazzi, Gavazzi, Hobson, Hoekstra, Hurley-Walker, Jenkins, Jing, Kneib, Liddle, Limousin, M. P. Hobson, Marshall, Massey, Massey, Navarro, Oguri, Oguri, Press, Schramm, Schramm, Seitz, Shaw, Sheth, Trotta, White   +36 more
core   +1 more source

Assembly bias and splashback in galaxy clusters [PDF]

, 2017
We use publicly available data for the Millennium Simulation to explore the implications of the recent detection of assembly bias and splashback signatures in a large sample of galaxy clusters.
Philipp Busch, S. White
semanticscholar   +1 more source

A census of cool-core galaxy clusters in IllustrisTNG [PDF]

Monthly notices of the Royal Astronomical Society, 2017
The thermodynamic structure of hot gas in galaxy clusters is sensitive to astrophysical processes and typically difficult to model with galaxy formation simulations.
D. Barnes, M. Vogelsberger, R. Kannan, F. Marinacci, R. Weinberger, V. Springel, P. Torrey, A. Pillepich, D. Nelson, R. Pakmor, J. Naiman, L. Hernquist, M. McDonald   +12 more
semanticscholar   +1 more source

LINEAR SUBSTRUCTURES IN GALAXY CLUSTERS

Odessa Astronomical Publications, 2019
We propose detailed scheme that is describing the morphology of linear substructures in galaxy clusters. Our base morphological scheme di- vides galaxy clusters using numerical criteria according the parameters: concentration to the cluster center, the ...
E. Panko, V. Korshunov, S. Yemelianov, V. Zabolotnii   +3 more
doaj   +1 more source

DETECTION OF THE SPLASHBACK RADIUS AND HALO ASSEMBLY BIAS OF MASSIVE GALAXY CLUSTERS [PDF]

, 2016
We show that the projected number density profiles of Sloan Digital Sky Survey photometric galaxies around galaxy clusters display strong evidence for the splashback radius, a sharp halo edge corresponding to the location of the first orbital apocenter ...
S. More, H. Miyatake, M. Takada, B. Diemer, A. Kravtsov, N. Dalal, A. More, Ryoma Murata, R. Mandelbaum, E. Rozo, E. Rykoff, M. Oguri, D. Spergel   +12 more
semanticscholar   +1 more source

A Gradual Decline of Star Formation since Cluster Infall: New Kinematic Insights into Environmental Quenching at 0.3 < z < 1.1

The Astrophysical Journal, 2023
The environments where galaxies reside crucially shape their star formation histories. We investigate a large sample of 1626 cluster galaxies located within 105 galaxy clusters spanning a large range in redshift (0.26 < z < 1.13). The galaxy clusters are
Keunho J. Kim, Matthew B. Bayliss, Allison G. Noble, Gourav Khullar, Ethan Cronk, Joshua Roberson, Behzad Ansarinejad, Lindsey E. Bleem, Benjamin Floyd, Sebastian Grandis, Guillaume Mahler, Michael A. McDonald, Christian L. Reichardt, Alexandro Saro, Keren Sharon, Taweewat Somboonpanyakul, Veronica Strazzullo   +16 more
doaj   +1 more source

The Halo Boundary of Galaxy Clusters in the SDSS [PDF]

, 2017
Analytical models and simulations predict a rapid decline in the halo density profile associated with the transition from the “infalling” regime outside the halo to the “collapsed” regime within the halo.
E. Baxter, Chihway L. Chang, B. Jain, S. Adhikari, N. Dalal, A. Kravtsov, S. More, E. Rozo, E. Rykoff, R. Sheth   +9 more
semanticscholar   +1 more source

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
doaj   +1 more source