Results 101 to 110 of about 87,085 (268)

ULTRAVIOLET MORPHOLOGY AND UNOBSCURED UV STAR FORMATION RATES OF CLASH BRIGHTEST CLUSTER GALAXIES [PDF]

open access: yes, 2015
Brightest cluster galaxies (BCGs) are usually quiescent, but many exhibit star formation. Here we exploit the opportunity provided by rest-frame UV imaging of galaxy clusters in the Cluster Lensing and Supernovae with Hubble (CLASH) Multi-Cycle Treasury ...
M. Donahue   +9 more
semanticscholar   +1 more source

A Catalog of 1.58 Million Clusters of Galaxies Identified from the DESI Legacy Imaging Surveys

open access: yesThe Astrophysical Journal Supplement Series
Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of the stellar mass distribution of galaxies within redshift slices around ...
Z. L. Wen, J. L. Han
doaj   +1 more source

The Young and the Wild: What Happens to Protoclusters Forming at Redshift z ≈ 4?

open access: yesThe Astrophysical Journal, 2023
Using one of the largest volumes of the hydrodynamical cosmological simulation suit Magneticum, we study the evolution of protoclusters identified at redshift ≈ 4, with properties similar to the well-observed protocluster SPT2349-56.
Rhea-Silvia Remus   +2 more
doaj   +1 more source

High radio-frequency properties and variability of brightest cluster galaxies [PDF]

open access: yes, 2015
We consider the high radio-frequency (15–353 GHz) properties and variability of 35 brightest cluster galaxies (BCGs). These are the most core-dominated sources drawn from a parent sample of more than 700 X-ray selected clusters, thus allowing us to ...
M. Hogan   +22 more
semanticscholar   +1 more source

Turbulent heating in galaxy clusters brightest in X-rays [PDF]

open access: yesNature, 2014
published in ...
Aurora Simionescu   +13 more
openaire   +10 more sources

About the linearity of the color-magnitude relation of early-type galaxies in the Virgo cluster [PDF]

open access: yes, 2013
We revisit the color-magnitude relation (CMR) of the Virgo cluster early-type galaxies in order to explore its alleged non-linearity. To this aim, we reanalyze the relation already published from data obtained within the ACS Virgo Cluster Survey of the ...
Castelli, Analia V. Smith   +3 more
core   +3 more sources

The Evolution of AGN Activity in Brightest Cluster Galaxies

open access: yesThe Astronomical Journal, 2022
Abstract We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev–Zel’dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-IR color and redshift ...
Taweewat Somboonpanyakul   +81 more
openaire   +9 more sources

High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275

open access: yesThe Astrophysical Journal
We  present new high-spectral-resolution observations ( R = λ /Δ λ = 7000) of the filamentary nebula surrounding NGC 1275, the central galaxy of the Perseus cluster.
Benjamin Vigneron   +20 more
doaj   +1 more source

Accuracy of the Photometric Redshifts of Brightest Cluster Galaxies Identified in the CFHTLS-W1

open access: yesJournal of Advanced Research in Natural and Applied Sciences
We determine the accuracy of photometric redshifts for the brightest cluster galaxies (BCGs) identified in the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS).
Sinan Aliş
doaj   +1 more source

Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327

open access: yesThe Astrophysical Journal, 2023
Exploiting the fundamentally achromatic nature of gravitational lensing, we present a lens model for the massive galaxy cluster SMACS J0723.3−7323 (SMACS J0723; z = 0.388) that significantly improves upon earlier work.
Guillaume Mahler   +14 more
doaj   +1 more source

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