Results 111 to 120 of about 87,085 (268)
Wide-Angle-Tail (WAT) Radio Sources
Galaxies, 2023 We review the properties of Wide-Angle-Tail (WAT) radio sources. The WAT radio sources are powerful, bent radio sources typically associated with the dominant galaxy in a cluster or group.
Christopher P. O’Dea, Stefi A. Baum
doaj +1 more source
The Shape of the Chameleon Fifth-Force on the Mass Components of Galaxy Clusters
UniverseIn the context of chameleon gravity, we present a semi-analytical solution of the chameleon field profile in an accurately modelled galaxy cluster’s mass components, namely the stellar mass of the Brightest Cluster Galaxy (BCG), the baryonic mass in ...
Lorenzo Pizzuti +3 more
doaj +1 more source
STAR FORMATION ACTIVITY IN CLASH BRIGHTEST CLUSTER GALAXIES [PDF]
, 2015 The CLASH X-ray selected sample of 20 galaxy clusters contains 10 brightest cluster galaxies (BCGs) that exhibit significant (>5σ) extinction-corrected star formation rates (SFRs).
K. Fogarty +4 more
semanticscholar +1 more source
The Central Kinematics and Black Hole Mass of 4C+37.11
The Astrophysical JournalWe report on integral field unit (IFU) measurements of the host of the radio source 4C+37.11. This massive elliptical contains the only resolved double compact nucleus at parsec-scale separation, likely a bound supermassive black hole binary (SMBHB).
Tirth Surti +4 more
doaj +1 more source
A New Galaxy Cluster Merger Capable of Probing Dark Matter: A56
The Astrophysical Journal, 2023 We report the discovery of a binary galaxy cluster merger via a search of the redMaPPer optical cluster catalog, with a projected separation of 535 kpc between the brightest cluster galaxies (BCGs).
David Wittman +5 more
doaj +1 more source
The regulation of star formation in cool-core clusters: imprints on the stellar populations of brightest cluster galaxies [PDF]
, 2015 A fraction of brightest cluster galaxies (BCGs) shows bright emission in the UV and the blue part of the optical spectrum, which has been interpreted as evidence of recent star formation.
S. I. Loubser +6 more
semanticscholar +1 more source
The central elliptical galaxy in fossil groups and formation of BCGs [PDF]
, 2006 We study the dominant central giant elliptical galaxies in ``Fossil groups'' using deep optical (R-band) and near infrared (Ks-band) photometry. These galaxies are as luminous as the brightest cluster galaxies (BCGs), raising immediate interest in their ...
Jones, Laurence R. +2 more
core +3 more sources
The Astrophysical JournalTo investigate the environmental effects on the growth of galaxies, we study the size–mass relation across a broad range of environments with a vast sample of approximately 32 million galaxies at z < 0.5 from the DESI Legacy Imaging Surveys.
Zhaobin Chen +3 more
doaj +1 more source
The Outer Halos of Very Massive Galaxies: BCGs and their DSC in the Magneticum Simulations
Galaxies, 2017 Recent hydrodynamic cosmological simulations cover volumes up to Gpc 3 and resolve halos across a wide range of masses and environments, from massive galaxy clusters down to normal galaxies, while following a large variety of physical processes ...
Rhea-Silvia Remus +2 more
doaj +1 more source
Cross-correlation Weak Lensing of SDSS galaxy Clusters II: Cluster Density Profiles and the Mass--Richness Relation [PDF]
, 2007 We interpret and model the statistical weak lensing measurements around 130,000 groups and clusters of galaxies in the Sloan Digital Sky Survey presented by Sheldon et al. 2007 (Paper I).
Annis, James +9 more
core +3 more sources