Results 1 to 10 of about 32,930 (270)

The Shape of the Chameleon Fifth-Force on the Mass Components of Galaxy Clusters

Universe
In 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, Valentina Amatori, Alexandre M. Pombo, Sandeep Haridasu   +3 more
doaj   +1 more source

Detection of a Star Forming Galaxy in the Center of a Low-Mass Galaxy Cluster

, 2018
Brightest Cluster Galaxies (BCGs) residing in the centers of galaxy clusters are typically quenched giant ellipticals. A recent study hinted that star-forming galaxies with large disks, so-called superluminous spirals and lenticulars, are the BCGs of a ...
Andrade-Santos, Felipe, Bogdan, Akos, Forman, William R., Jones, Christine, Kovacs, Orsolya E., Kraft, Ralph P., Lovisari, Lorenzo   +6 more
core   +1 more source

The descendents of Lyman Break Galaxies in galaxy clusters: spatial distribution and orbital properties [PDF]

, 2000
We combine semi-analytical methods with a ultra-high resolution simulation of a galaxy cluster (of mass 2.3 10^14h-1Msolar, and 4 10^6 particles within its virial radius) formed in a standard CDM universe to study the spatial distribution and orbital ...
Adami C., B. Moore, Biviano A., Bower R. G., Cole S., F. Governato, Fontana A., G. Lake, J. Stadel, Kauffmann G., Lacey C., Madau P., Mellier Y., S. Ghigna, T. Quinn, Tormen G.   +15 more
core   +2 more sources

Minor Mergers Are Not Enough: The Importance of Major Mergers during Brightest Cluster Galaxy Assembly

The Astrophysical Journal Supplement Series, 2023
We investigate the roles of major and minor mergers during brightest cluster galaxy (BCG) assembly using surface brightness profiles, line indices, and fundamental plane relations.
Matthias Kluge, Ralf Bender
doaj   +1 more source

A Submillimeter Selected Quasar in the Field of Abell 478

, 2000
We report the discovery of a z=2.83 quasar in the field of the cooling flow galaxy cluster Abell 478. This quasar was first detected in a submm survey of star forming galaxies at high redshifts, as the brightest source.
Jaffe, W., Knudsen, K. K., van der Werf, P. P.   +2 more
core   +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

The dynamical status of ZwCl 2341.1+0000: a very elongated galaxy structure with a complex radio emission

, 2013
We study the dynamical status of the galaxy system ZwCl 2341.1+0000, a filamentary multi-Mpc galaxy structure associated with a complex diffuse radio emission.
Barrena, R., Boschin, W., Girardi, M.
core   +1 more source

A Candidate Brightest Proto-Cluster Galaxy at z = 3.03

, 2008
We report the discovery of a very bright (m_R = 22.2) Lyman break galaxy at z = 3.03 that appears to be a massive system in a late stage of merging. Deep imaging reveals multiple peaks in the brightness profile with angular separations of ~0.''8 (~25 h ...
Adelberger, Arthur M. Wolfe, Berrier, Conroy, Cooke, Elizabeth J. Barton, Ferguson, Gardner, James S. Bullock, Jeff Cooke, Klypin, Kolatt, Kyle R. Stewart, Lemson, Miley, Pettini, Pettini, Ryan, Sawicki, Shapley, Shapley, Steidel, Steidel, Steidel, Steidel, Stern, Stewart, Wechsler, Zirm   +28 more
core   +2 more sources

A GMBCG Galaxy Cluster Catalog of 55,424 Rich Clusters from SDSS DR7

, 2010
We present a large catalog of optically selected galaxy clusters from the application of a new Gaussian Mixture Brightest Cluster Galaxy (GMBCG) algorithm to SDSS Data Release 7 data.
Abazajian, Abell, Adami, Annis, August Evrard, Barger, Barrientos, Bartelmann, Benjamin P. Koester, Berlind, Bernstein, Blakeslee, Blakeslee, Blanton, Bower, Burenin, Böhringer, Couch, David E. Johnston, David Gerdes, Dong, Eduardo Rozo, Efstathiou, Eisenhardt, Eisenstein, Eli S. Rykoff, Erin Sheldon, Gal, Gal, Gal, Gerdes, Gladders, Gladders, Gladders, Gladders, Gladders, Goto, Hansen, Hao, Hao, Hao, Hao, James Annis, Jiangang Hao, Johnston, Kepner, Kim, Koester, Koester, Li, Lopes, López-Cruz, Majumdar, Matthew Becker, Mei, Michael Busha, Miller, Mullis, Navarro, Oukbir, Oyaizu, Papovich, Perlmutter, Postman, Ramella, Riess, Risa H. Wechsler, Rozo, Rozo, Rozo, Rozo, Rykoff, Seth R. Siegel, Sheldon, Silverman, Spergel, Spergel, The Dark Energy Survey Collaboration., Timothy A. McKay, Wen, Yang, York   +81 more
core   +2 more sources

Luminous Red Galaxies in Clusters: Central Occupation, Spatial Distributions, and Mis-centering [PDF]

, 2015
Luminous Red Galaxies (LRG) from the Sloan Digital Sky Survey are considered among the best understood samples of galaxies, and they are employed in a broad range of cosmological studies.
Hikage, Chiaki, Hoshino, Hanako, Lackner, Claire, Leauthaud, Alexie, Mandelbaum, Rachel, More, Anupreeta, More, Surhud, Rozo, Eduardo, Rykoff, Eli, Saito, Shun, Vulcani, Benedetta   +10 more
core   +2 more sources