Results 81 to 90 of about 87,085 (268)

Chandra Observations of A2670 and A2107: A Comet Galaxy and cDs with Large Peculiar Velocities

, 2005
We present an analysis of Chandra observations of the galaxy clusters A2670 and A2107. Their cD galaxies have large peculiar velocities (>200km/s) and thus the clusters appear to be undergoing mergers.
Fujita, Yutaka, Sarazin, Craig L., Sivakoff, Gregory R.   +2 more
core   +1 more source

Galactic cannibalism and CDM density profiles [PDF]

, 2004
Using N-body simulations we show that the process of formation of the brightest cluster galaxy through dissipationless galactic cannibalism can affect the inner cluster dark matter density profile.
Barnes, Bartelmann, Bertin, Binney, Blumenthal, C. Nipoti, de Blok, Dehnen, Dehnen, Dubinski, El-Zant, Gavazzi, Ghigna, Gnedin, Hernquist, Jesseit, Kazantzidis, Kelson, Kochanek, L. Ciotti, Lewis, Londrillo, M. Stiavelli, Ma, Merritt, Mo, Moore, Natarajan, Navarro, Navarro, Nipoti, Nipoti, Nipoti, Ostriker, Power, Ricotti, Rosati, Salucci, Sand, Sand, Simon, Smith, Spergel, Springel, Subramanian, T. Treu, Treu, van den Bosch, Zhang   +48 more
core   +2 more sources

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

Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448

The Astrophysical Journal, 2023
We present a multiwavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope at z = 1.4010 ± 0.0028. The high-redshift cluster shows clear signs of being relaxed
Megan Masterson, Michael McDonald, Behzad Ansarinejad, Matthew Bayliss, Bradford A. Benson, Lindsey E. Bleem, Michael S. Calzadilla, Alastair C. Edge, Benjamin Floyd, Keunho J. Kim, Gourav Khullar, Taweewat Somboonpanyakul   +11 more
doaj   +1 more source

The X-ray coronae of the two brightest galaxies in the Coma cluster [PDF]

, 2014
We use deep Chandra X-ray Observatory observations to examine the coronae of the two brightest cluster galaxies in the Coma cluster of galaxies, NGC 4874 and NGC 4889.
Churazov, E., Fabian, A. C., Sanders, J. S., Simionescu, A., Sun, M., Walker, S. A., Werner, N.   +6 more
core   +2 more sources

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, C. Conselice, A. Arag'on-Salamanca, O. Almaini, W. Hartley, C. Lani, A. Mortlock, L. Old   +7 more
semanticscholar   +1 more source

An Infrared Survey of Brightest Cluster Galaxies. II. Why are Some Brightest Cluster Galaxies Forming Stars? [PDF]

The Astrophysical Journal, 2008
Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters. They found that at least half of these sources have signs of excess infrared emission. Here we discuss the nature of the IR emission and its implications for
O'Dea, C.P., Baum, S.A., Privon, G., Noel-Storr, J., Quillen, A.C., Zufelt, N., Park, J., Edge, A., Russell, H., Fabian, A.C., Donahue, M., Sarazin, C.L., McNamara, B., Bregman, J.N., Egami, E.   +14 more
openaire   +5 more sources

The Emergence of a Brightest Cluster Galaxy in a Protocluster Core at z = 2.24

The Astrophysical Journal
We report the detection of a pair of massive quiescent galaxies likely in the process of merging at the center of the spectroscopically confirmed, extremely massive protocluster BOSS1244 at z = 2.24 ± 0.02.
Dong Dong Shi, Xin Wang, Xian Zhong Zheng, Zheng Cai, Xiaohui Fan, Fuyan Bian, Harry I. Teplitz   +6 more
doaj   +1 more source

The Formation of the Brightest Cluster Galaxy and Intracluster Light in Cosmological N-body Simulations with the Galaxy Replacement Technique

The Astrophysical Journal, 2023
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 technique.” We study ...
Kyungwon Chun, Jihye Shin, Rory Smith, Jongwan Ko, Jaewon Yoo   +4 more
doaj   +1 more source

The Look-back Time Evolution of Far-Ultraviolet Flux from the Brightest Cluster Elliptical Galaxies at z < 0.2 [PDF]

, 2007
We present the GALEX UV photometry of the elliptical galaxies in Abell clusters at moderate redshifts (z < 0.2) for the study of the look-back time evolution of the UV upturn phenomenon. The brightest elliptical galaxies (M_r < -22) in 12 remote clusters
Alessandro Boselli, Alex S. Szalay, Barry F. Madore, Barry Y. Welsh, Bower R. G., Brown D., Bruno Milliard, Chang H. Ree, D. Christopher Martin, David Schiminovich, Deharveng J.-M., Donas J., Faber S. M., Gil de Paz A., Greggio L., Han Z., Jaehyon Rhee, Jean‐Michel Deharveng, Jonghwan Rhee, Jose Donas, Karl Forster, Kauffmann G., Kevin Schawinski, Kodama T., Luciana Bianchi, Mark Seibert, Moehler S., O'Connell R. W., Patrick Morrissey, Peter G. Friedman, R. Michael Rich, Sarzi M., Schawinski K., Soo‐Chang Rey, Sugata Kaviraj, Sukyoung K. Yi, Suk‐Jin Yoon, Susan G. Neff, Tantalo R., Ted K. Wyder, Timothy M. Heckman, Todd Small, Tom A. Barlow, Young‐Jong Sohn, Young‐Wook Lee, Yun‐Kyeong Sheen   +45 more
core   +4 more sources