Results 181 to 190 of about 89,941 (303)

The Manhattan Suite: Accelerated Galaxy Evolution in the Early Universe

open access: yesThe Astrophysical Journal
Observational advances have allowed the detection of galaxies, protoclusters, and galaxy clusters at higher and higher redshifts, opening a new view into extreme galaxy evolution.
Douglas Rennehan
doaj   +1 more source

Fundamental parameters of brightest cluster galaxies

open access: yesThe Astrophysical Journal, 1991
Photometry and spectroscopy of a sample of the brightest cluster galaxies (BCGs) are presented, and the relationships between scale length, surface brightness, velocity dispersion, and line strength are determined and compared with the relations determined for lower luminosity ellipticals (LLEs).
John G. Hoessel, W. R. Oegerle
openaire   +2 more sources

A New Dissociative Galaxy Cluster Merger: RM J150822.0+575515.2

open access: yesThe Astrophysical Journal
Galaxy cluster mergers that exhibit clear dissociation between their dark matter, intracluster gas, and stellar components are great laboratories for probing dark matter properties.
Rodrigo Stancioli   +3 more
doaj   +1 more source

A High-Caliber View of the Bullet Cluster through JWST Strong and Weak Lensing Analyses

open access: yesThe Astrophysical Journal Letters
The Bullet Cluster (1E 0657-56) is a key astrophysical laboratory for studying dark matter, galaxy cluster mergers, and shock propagation in extreme environments.
Sangjun Cha   +7 more
doaj   +1 more source

Evolution of Massive Red Galaxies in Clusters from z = 1.0 to z = 0.3

open access: yesThe Astronomical Journal
A critical issue in studying the evolution of galaxy clusters is to find ways that enable meaningful comparisons of clusters observed at different redshifts, as well as in various stages of their growth.
Yen-Ting Lin   +4 more
doaj   +1 more source

Deep Chandra Observations of A2495: A Possible Sloshing-regulated Feedback Cycle in a Triple-offset Galaxy Cluster

open access: yesThe Astrophysical Journal
We present the analysis of new, deep Chandra observations (130 ks) of the galaxy cluster A2495. This object is known for the presence of a triple offset between the peaks of the intracluster medium (ICM), the brightest cluster galaxy (BCG), and the warm ...
L. Rosignoli   +8 more
doaj   +1 more source

COOL-LAMPS. VII. Quantifying Strong-lens Scaling Relations with 177 Cluster-scale Strong Gravitational Lenses in DECaLS

open access: yesThe Astrophysical Journal
We estimate the Einstein-radius-enclosed total mass for 177 cluster-scale strong gravitational lenses identified by the ChicagO Optically selected Lenses Located At the Margins of Public Surveys (COOL-LAMPS) collaboration with lens redshifts ranging from
Simon D. Mork   +30 more
doaj   +1 more source

Line emission in the brightest cluster galaxies of the NOAO Fundamental Plane and Sloan Digital Sky Surveys [PDF]

open access: hybrid, 2007
Louise O. V. Edwards   +3 more
openalex   +1 more source

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