Results 101 to 110 of about 59,378 (245)

Evolution of the brightest cluster galaxies: the influence of morphology, stellar mass and environment [PDF]

open access: yes, 2015
Using a sample of 425 nearby brightest cluster galaxies (BCGs) from von der Linden et al., we study the relationship between their internal properties (stellar masses, structural parameters and morphologies) and their environment.
Dongyao Zhao   +2 more
semanticscholar   +1 more source

GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES: A NEAR-UNIVERSAL LUMINOSITY FUNCTION? [PDF]

open access: yes, 2014
We present the first results from our Hubble Space Telescope brightest cluster galaxy (BCG) survey of seven central supergiant cluster galaxies and their globular cluster (GC) systems.
W. Harris   +12 more
semanticscholar   +1 more source

The link between morphology and structure of brightest cluster galaxies: automatic identification of cDs [PDF]

open access: yes, 2015
We study a large sample of 625 low-redshift brightest cluster galaxies (BCGs) and link their morphologies to their structural properties. We derive visual morphologies and find that ∼57 per cent of the BCGs are cD galaxies, ∼13 per cent are ellipticals ...
Dongyao Zhao   +2 more
semanticscholar   +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

Stellar formation in Brightest Cluster Galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractWe study the interplay between stellar population of the Brightest Cluster Galaxies (BCG) and cluster global properties. We use X-ray properties from Chandra, ROSAT and ASCA observations and BCGs spectra from SDSS-DR6. Using STARLIGHT we determined the star formation history of the BCGs and look for relations with the intra-cluster gas ...
Gastão B. Lima Neto   +1 more
openaire   +2 more sources

The accretion histories of brightest cluster galaxies from their stellar population gradients [PDF]

open access: yes, 2015
We analyse the spatially-resolved stellar populations of 9 local (z 10 11:3 M ) from the ATLAS 3D survey (median [Z/H] = 0:04 0:07, [Z/H] = 0:19 0:1). However, massive early-type galaxies from ATLAS 3D have consistently old ages (median Age = 12:0 3:8 ...
P. Oliva-Altamirano   +20 more
semanticscholar   +1 more source

The Intracluster Light of Abell 3667: Unveiling an Optical Bridge in LSST Precursor Data

open access: yesThe Astrophysical Journal Letters
Intracluster light (ICL), the diffuse glow of stars stripped from galaxies during a cluster’s formation, is an established tracer of a cluster’s dynamical history. The upcoming Vera C.
Anthony M. Englert   +2 more
doaj   +1 more source

The Outer Halos of Very Massive Galaxies: BCGs and their DSC in the Magneticum Simulations

open access: yesGalaxies, 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

GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES. II. NGC 6166 [PDF]

open access: yes, 2015
We present new deep photometry of the globular cluster system (GCS) around NGC 6166, the central supergiant galaxy in Abell 2199. Hubble Space Telescope data from the Advanced Camera for Surveys and WFC3 cameras in F475W and F814W are used to determine ...
W. Harris   +5 more
semanticscholar   +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

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