Results 61 to 70 of about 59,378 (245)
The shapes of brightest cluster galaxies
The Astrophysical Journal, 1993 The mean isophotal axis ratios are computed for a complete sample of 119 brightest cluster galaxies (BCGs) in Abell clusters. The cumulative distribution function F(q) of axis ratios for the BCGs differs from F(q) for a sample of ordinary elliptical galaxies at only the P=0.14 probability level, as measured by a Kolmogorov Smirnov test.
Tod R. Lauer +2 more
openaire +2 more sources
Stellar populations in brightest cluster galaxies [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe present the results of an investigation of a large sample of brightest cluster galaxies (BCGs), their kinematic and stellar population properties and the relationships between these and the properties of the host clusters. We have obtained high signal-to-noise, long-slit spectra of 49 BCGs in the nearby Universe with the Gemini and WHT ...
Loubser, S +3 more
openaire +1 more source
Radial gradients in initial mass function sensitive absorption features in the Coma brightest cluster galaxies [PDF]
, 2016 Using the Oxford ShortWavelength Integral Field specTrograph, we trace radial variations of initial mass function (IMF)-sensitive absorption features of three galaxies in the Coma cluster.
S. Zieleniewski +4 more
semanticscholar +1 more source
THE EVOLUTION OF BRIGHTEST CLUSTER GALAXIES IN A HIERARCHICAL UNIVERSE [PDF]
The Astrophysical Journal, 2012 We investigate the evolution of Brightest Cluster Galaxies (BCGs) from redshift z~1.6 to z~0. We use the semi-analytic model of Croton et al. (2006) with a new spectro-photometric model based on the Maraston (2005) stellar populations and a new recipe for the dust extinction. We compare the model predictions of the K-band luminosity evolution and the J-
Tonini, Chiara +4 more
openaire +5 more sources
STAR FORMATION IN INTERMEDIATE REDSHIFT 0.2 < z < 0.7 BRIGHTEST CLUSTER GALAXIES [PDF]
, 2016 We present a multi-wavelength photometric and spectroscopic study of 42 Brightest Cluster Galaxies (BCGs) in two samples of galaxy clusters chosen for a gravitational lensing study. The study’s initial sample combines 25 BCGs from the Cluster Lensing and
K. Cooke +5 more
semanticscholar +1 more source
How special are brightest group and cluster galaxies? [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Abstract We use the Sloan Digital Sky Survey (SDSS) to construct a sample of 625 brightest group and cluster galaxies (BCGs) together with control samples of non-BCGs matched in stellar mass, redshift and colour. We investigate how the systematic properties of BCGs depend on stellar mass and on their privileged location near the cluster ...
von der Linden, Anja +3 more
openaire +4 more sources
Investigating the M GCS–M h Relation in the Most Massive Galaxies
The Astrophysical Journal, 2023 The relation between the total mass contained in the globular clusters of a galaxy and the mass of its dark-matter halo has been found observationally to be nearly linear over five decades of mass.
Veronika Dornan, William E. Harris
doaj +1 more source
Where does the gas fueling star formation in brightest cluster galaxies originate [PDF]
, 2016 Aims. We investigate the relationship between X-ray cooling and star formation in brightest cluster galaxies (BCGs). Methods. We present an X-ray spectral analysis of the inner regions, 10 40 kpc, of six nearby cool core clusters (z < 0:35) observed with
S. Molendi +8 more
semanticscholar +1 more source
Coevolution of brightest cluster galaxies and intracluster light using CLASH [PDF]
, 2015 We examine the stellar mass assembly in galaxy cluster cores using data from the Cluster Lensing And Supernova survey with Hubble (CLASH). We measure the growth of brightest cluster galaxy (BCG) stellar mass, the fraction of the total cluster light which
Claire Burke, M. Hilton, C. Collins
semanticscholar +1 more source
Exploring the progenitors of brightest cluster galaxies at z ∼ 2 [PDF]
, 2016 We present a new method for tracing the evolution of brightest cluster galaxies (BCGs) from z ∼ 2 to z ∼ 0. We conclude on the basis of semi-analytical models that the best method to select BCG progenitors at z ∼ 2 is a hybrid environmental density and ...
Dongyao Zhao +7 more
semanticscholar +1 more source