Results 131 to 140 of about 1,986 (217)

Evolution of the Brightest Cluster Galaxies [PDF]

, 2016
In this thesis, I explore the evolution of the brightest cluster galaxies (BCGs) over the last 10 billion years through detailed studies of both local BCGs from SDSS and their high-z progenitors from CANDELS UDS.\ud \ud First, I study a large sample of local BCGs and link their morphologies to their structural properties.
openaire   +1 more source

Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics

The Astrophysical Journal Supplement Series
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging.
Kyle Finner, M. James Jee, Hyejeon Cho, Kim HyeongHan, Wonki Lee, Reinout J. van Weeren, David Wittman, Mijin Yoon   +7 more
doaj   +1 more source

Warm and Cold Molecular Gas in the Cluster Center of MACS 1931−26 with JWST and ALMA

The Astrophysical Journal
We perform one of the first spatially resolved studies of warm (>100 K) and cold (10–100 K) molecular gas in the circumgalactic medium (CGM), focusing on the brightest cluster galaxy (BCG) of a cool-core galaxy cluster, MACS 1931−26, at z = 0.35.
L. Ghodsi, L. Kuhn, A. W. S. Man, P. Andreani, C. De Breuck, A. Togi, K. Dasyra, M. Lehnert, I. García-Bernete, D. Donevski, T. G. Bisbas, Y. Miyamoto   +11 more
doaj   +1 more source

Star Formation, Nebulae, and Active Galactic Nuclei in CLASH Brightest Cluster Galaxies. I. Dependence on Core Entropy of Intracluster Medium

The Astrophysical Journal
We set the stage for reassessing how star formation, emission-line nebulae, and active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs) depend on the thermodynamics of the intracluster medium (ICM).
Arsen Levitskiy, Jeremy Lim, Youichi Ohyama, Juno Li, Megan Donahue   +4 more
doaj   +1 more source

A distinct radial acceleration relation across the brightest cluster galaxies and galaxy clusters

Astronomy & Astrophysics
Recent studies reveal a radial acceleration relation (RAR) in galaxies, which illustrates a tight empirical correlation connecting the observational acceleration and the baryonic acceleration with a characteristic acceleration scale. However, a distinct RAR has been revealed on brightest cluster galaxy (BCG) cluster scales with a seventeen-times-larger
Yong Tian, Chung-Ming Ko, Pengfei Li, Stacy McGaugh, Shemile L. Poblete   +4 more
openaire   +2 more sources

Selecting Clusters and Protoclusters via Stellar Mass Density. II. Application to HSC-SSP Observations

The Astrophysical Journal
We present a selection of candidates of clusters and protoclusters of galaxies identified in the photometric data of the HSC-SSP Wide Public Data Release 3 (PDR3), spanning the redshift range 0.1 ≤ z ≤ 2. The selection method, detailed in Vicentin et al.,
Marcelo C. Vicentin, Laerte Sodré Jr., Michael A. Strauss, Erik V. R. de Lima, Pablo Araya-Araya   +4 more
doaj   +1 more source

The Stellar Mass Function for Nine Massive Galaxy Clusters in the Local Universe

The Astrophysical Journal
We measure galaxy stellar mass functions (SMFs) for nine of the most massive galaxy clusters in the local Universe (0.07 
Jong-In Park, Jubee Sohn, Margaret J. Geller, Ken J. Rines, Antonaldo Diaferio   +4 more
doaj   +1 more source

Probing the effect of the protocluster environment on galaxy morphology at z = 2.23

Astronomy & Astrophysics
Context. As galaxies evolve in dense cluster and protocluster environments, they interact and quench their star formation. This gradually transforms the dominant galaxy population from star-forming galaxies to quiescent red galaxies.
Golden-Marx E., Cai Z., Shi D., Wang X., Lemaux B. C., Vulcani B., Häußler B., Renard P., Shen L., Giddings F.   +9 more
doaj   +1 more source

Molecular gas and dust in the highly magnified z ∼2.8 galaxy behind the Bullet Cluster [PDF]

, 2012
Context. The gravitational magnification provided by massive galaxy clusters makes it possible to probe the physical conditions in distant galaxies that are of lower luminosity than those in blank fields and likely more representative of the bulk of the ...
WILLIAM FRANK WALL, Edgar Castillo Domínguez, Omar López Cruz, Héctor Javier Ibarra Medel   +3 more
core  

Euclid: Early Release Observations – Dwarf galaxies in the Perseus galaxy cluster [Dataset] [PDF]

F. R. Marleau et al.As part of the Euclid ERO series of papers, we have used Euclid imaging of the Perseus cluster to demonstrate the capabilities of the telescope for dwarf galaxy science. The depth, spatial resolution, and FoV have allowed us to detect
Fosalba, Pablo, Marleau, Francine, Serrano, Santiago   +2 more
core   +1 more source