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We identified Brightest Cluster Members (BCM) on DSS images of 1083 Abell clusters, derived their individual and host cluster redshifts from literature and determined the BCM ellipticity. Half the BCMs move at a speed higher than 37 % of…

Astrophysics · Physics 2015-06-24 H. Andernach , K. Alamo-Martinez , R. Coziol , E. Tago

[Abridged] We present K-band data for the brightest cluster galaxies (BCGs) from the ESO Distant Cluster Survey. These data are combined with photometry from Aragon-Salamanca et al. (1998) and a low-redshift comparison sample from von der…

We have examined the orientations of early-type galaxies in the Coma cluster to see whether the well-established tendency for brightest cluster galaxies to share the same major axis orientation as their host cluster also extends to the rest…

Astrophysics · Physics 2009-11-13 Lisa Torlina , Roberto De Propris , Michael J. West

A novel statistic is proposed to examine the hypothesis that all cluster galaxies are drawn from the same luminosity distribution (LD). In such a "statistical model" of galaxy LD, the brightest cluster galaxies (BCGs) are simply the…

Cosmology and Nongalactic Astrophysics · Physics 2010-06-15 Yen-Ting Lin , Jeremiah P. Ostriker , Christopher J. Miller

Rich and massive clusters of galaxies at intermediate redshift are capable of magnifying and distorting the images of background galaxies. A comparison of different mass estimators among these clusters can provide useful information about…

Astrophysics · Physics 2009-10-30 Xiang-Ping Wu , Tzihong Chiueh , Li-Zhi Fang , Yan-Jie Xue

Using the DIANOGA hydrodynamical zoom-in simulation set of galaxy clusters, we analyze the dynamics traced by stars belonging to the Brightest Cluster Galaxies (BCGs) and their surrounding diffuse component, forming the intracluster light…

Astrophysics of Galaxies · Physics 2021-09-06 I. Marini , S. Borgani , A. Saro , G. L. Granato , C. Ragone-Figueroa , B. Sartoris , K. Dolag , G. Murante , A. Ragagnin , Y. Wang

Using a resimulation technique, we perform high-resolution cosmological simulations of dry mergers in a massive galaxy cluster identified in the Millennium Run. Our initial conditions include well resolved compound galaxy models consisting…

Cosmology and Nongalactic Astrophysics · Physics 2010-05-12 Mateusz Ruszkowski , Volker Springel

We study Brightest Cluster Galaxies (BCGs) in $\sim5000$ galaxy clusters from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. The sample is selected over an area of 830 $\textrm{deg}^2$ and is uniformly distributed in redshift over…

We investigate where brightest cluster galaxies (BCGs) sit on the fundamental plane of black hole (BH) activity, an established relation between the X-ray luminosity, the radio luminosity and the mass of a BH. Our sample mostly consists of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 J. Hlavacek-Larrondo , A. C. Fabian , A. C. Edge , M. T. Hogan

We describe the results of observations of galaxy clusters conducted with ISOCAM on-board the Infrared Space Observatory. Our research is aimed at understanding the processes driving galaxy evolution in dense environments, free from the…

(abridged) The evolution of galaxy clustering from z=0 to z=4.5 is analyzed using the angular correlation function and the photometric redshift distribution of galaxies brighter than I_{AB}\le 28.5 in the HDF North. The reliability of the…

In this study we investigate the formation and evolution mechanisms of the brightest cluster galaxies (BCGs) over cosmic time. At high redshift ($z\sim0.9$), we selected BCGs and most massive cluster galaxies (MMCGs) from the Cl1604…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Begoña Ascaso , Brian C. Lemaux , Lori M. Lubin , Roy R. Gal , Dale D. Kocevski , Nicholas Rumbaugh , Gordon Squires

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…

Astrophysics · Physics 2009-11-11 Habib G. Khosroshahi , Trevor. J. Ponman , Laurence R. Jones

The paper discusses the problem of the orientation of galaxies in groups in the Local Supercluster (LSC). The existence of the preferred orientation of galaxy group is shown. We found that the orientation of galaxy groups in the Local…

Cosmology and Nongalactic Astrophysics · Physics 2011-11-15 Piotr Flin , Wlodzimierz Godlowski

Galaxies and clusters embedded in the large-scale structure of the Universe are observed to align in preferential directions. Galaxy alignment has been established as a potential probe for cosmological information, but the application of…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-02 Casper J. G. Vedder , Nora Elisa Chisari

Slit spectra, covering the rest frame near-ultraviolet and blue wavelength regions, are combined with moderately deep g and R images to investigate radial population gradients in the brightest components of six z=0.2 galaxy clusters…

Astrophysics · Physics 2016-08-30 T. J. Davidge , M. Grinder

We have discovered an X-ray selected galaxy cluster with a spectroscopic redshift of 1.753. The redshift is of the brightest cluster galaxy (BCG), which is coincident with the peak of the X-ray surface brightness. We also have concordant…

We investigate the formation channels of the intracluster light (ICL) and the brightest cluster galaxy (BCG) in clusters at $z=0$. For this, we perform multi-resolution cosmological N-body simulations using the "Galaxy Replacement…

Astrophysics of Galaxies · Physics 2023-02-15 Kyungwon Chun , Jihye Shin , Rory Smith , Jongwan Ko , Jaewon Yoo

Brightest Cluster Galaxies (BCGs) might have been assembled relatively late (z<1) via mergers. By exploiting the high-resolution HST/ACS imaging, we find four BCGs (COSMOS-P 125516, 102810, 036694 and 089357) in major dry merging in 29…

Astrophysics of Galaxies · Physics 2015-06-23 F. S. Liu , F. J. Lei , X. M. Meng , D. F. Jiang
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