Results 121 to 130 of about 1,023,991 (216)
High-redshift Merger-induced Bar-like Galaxies in IllustrisTNG
The Astrophysical Journal LettersRecent discoveries made with JWST observations include a significant number of barred galaxies at high redshift. Their origin remains unclear, and their presence seems difficult to reproduce in cosmological simulations of galaxy formation and evolution ...
Ewa L. Łokas
doaj +1 more source
PEARLS: Globular Clusters and Ultracompact Dwarfs in the El Gordo Galaxies at z = 0.87
The Astrophysical JournalJWST/NIRCam 0.9 to 2.0 μ m images reveal a population of point sources around the major galaxies in the El Gordo cluster at redshift z = 0.87. Their distribution in the color–magnitude diagrams shows a narrow sequence well separated from field-galaxy ...
William E. Harris +13 more
doaj +1 more source
The Astrophysical JournalWe 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 +4 more
doaj +1 more source
Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters
, 2020 We explore connections between brightest cluster galaxies (BCGs) and their host clusters. We first construct a HeCS-omnibus cluster sample including 227 galaxy clusters within 0.02.<.z.<.0.30; the total number of spectroscopic members from MMT ...
Rines, Kenneth J. +3 more
core +1 more source
Environmental Imprints on the Assembly of the Cool Gas around Bright Cluster Galaxies
The Astrophysical Journal LettersGalaxy clusters represent extreme cosmic laboratories where environmental processes dramatically reshape their constituent galaxies, yet their effect on the gaseous halos of central galaxies remains poorly constrained.
Runyu Zhu +16 more
doaj +1 more source
GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES. III. BEYOND BIMODALITY
, 2017 We present new deep photometry of the rich globular cluster (GC) systems around the Brightest Cluster Galaxies UGC 9799 (Abell 2052) and UGC 10143 (Abell 2147), obtained with the Hubble Space Telescope (HST) ACS and WFC3 cameras.
Harris, William E. +6 more
core +1 more source
Clusters, brightest cluster galaxies and galaxy alignments
, 2014 This thesis develops two main topics related to the study of the large-scale structure of the Universe. The first one is the intrinsic alignment of galaxies.
Chisari, Nora Elisa
core
The formation of brightest cluster galaxies: the case of ABELL 407
, 2015 This article begins with a general introduction to galaxy formation and evolution and ends with a discussion of the long-term spectroscopic study: The Role of Close Companions in the Formation of Brightest Cluster Galaxies and Intracluster Light.
Edwards, Louise O.V.
core +1 more source
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
COSMIC: A Galaxy Cluster–Finding Algorithm Using Machine Learning
The Astrophysical Journal Supplement SeriesBuilding a comprehensive catalog of galaxy clusters is a fundamental task for studies on structure formation and galaxy evolution. In this paper, we present Cluster Optical Search using Machine Intelligence in Catalogs (COSMIC), an algorithm utilizing ...
Da-Chuan Tian +3 more
doaj +1 more source