Results 51 to 60 of about 88,791 (299)

The Evolution of AGN Activity in Brightest Cluster Galaxies

The Astronomical Journal, 2022
Abstract We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev–Zel’dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-IR color and redshift ...
Taweewat Somboonpanyakul, Michael McDonald, Allison Noble, M. Aguena, S. Allam, A. Amon, F. Andrade-Oliveira, David Bacon, Matthew Bayliss, E. Bertin, S. Bhargava, D. Brooks, E. Buckley‐Geer, D. L. Burke, Michael S. Calzadilla, Rebecca Canning, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, P. Doel, Peter Eisenhardt, S. Everett, A. E. Evrard, I. Ferrero, B. Flaugher, Benjamin Floyd, J. García-Bellido, E. Gaztañaga, D. W. Gerdes, Anthony H. Gonzalez, David Gruen, R. A. Gruendl, J. Gschwend, N. Gupta, G. Gutiérrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, B. Hoyle, D. J. James, T. Jeltema, Gourav Khullar, Keun-Ho Kim, Matthias Klein, K. Kuêhn, M. Lima, M. A. G. Maia, J. L. Marshall, Paul Martini, P. Melchior, F. Menanteau, R. Miquel, J. J. Mohr, R. Morgan, R. L. C. Ogando, A. Palmese, F. Paz-Chinchón, A. Pieres, A. A. Plazas Malagón, K. Reil, A. K. Romer, F. Ruppin, E. Sánchez, A. Saro, V. Scarpine, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, Priyanka Singh, M. Smith, M. Soares-Santos, V. Strazzullo, E. Suchyta, M. E. C. Swanson, G. Tarlé, C. To, D. L. Tucker, R. D. Wilkinson   +81 more
openaire   +8 more sources

DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS

Odessa Astronomical Publications, 2018
The results of the detailed analysis of the 2D distribution of galaxies in 28 rich galaxy clusters with significant concentration to the cluster center are present.
E. Panko, A. Sirginava, A. Stepaniuk
doaj   +1 more source

The Initial Mass Function and Other Stellar Properties Across the Core of the Hydra I Cluster

The Astrophysical Journal, 2023
The Hydra I cluster offers an excellent opportunity to study and compare the relic old stellar populations in the core of its two brightest galaxies. In addition, the differing kinematics of the two galaxies allows a test of the local validity of general
Ilaria Lonoce, W. L. Freedman, A. Feldmeier-Krause   +2 more
doaj   +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

GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES. III. BEYOND BIMODALITY [PDF]

, 2016
We present new deep photometry of the rich globular cluster (GC) systems around the Brightest Cluster Galaxies UGC 9799 (Abell 2052) and UGC 10143 (Abell 2147), obtained with the Hubble Space Telescope (HST) ACS and WFC3 cameras.
W. Harris, Stephanie M. Ciccone, G. Eadie, O. Gnedin, D. Geisler, Barry Rothberg, J. Bailin   +6 more
semanticscholar   +1 more source

First Results on the Cluster Galaxy Population from the Subaru Hyper Suprime-Cam Survey. III. Brightest Cluster Galaxies, Stellar Mass Distribution, and Active Galaxies [PDF]

, 2017
The unprecedented depth and area surveyed by the Subaru Strategic Program with the Hyper Suprime-Cam (HSC-SSP) have enabled us to construct and publish the largest distant cluster sample out to to date.
Yen-Ting Lin, B. Hsieh, Sheng-Chieh Lin, M. Oguri, Kai-Feng Chen, Masayuki Tanaka, I. Chiu, Song Huang, T. Kodama, A. Leauthaud, S. More, A. Nishizawa, K. Bundy, Lihwai Lin, S. Miyazaki   +14 more
semanticscholar   +1 more source

MAJOR CLUSTER MERGERS AND THE LOCATION OF THE BRIGHTEST CLUSTER GALAXY [PDF]

The Astrophysical Journal, 2014
Using a large N-body cosmological simulation combined with a subgrid treatment of galaxy formation, we study the formation and evolution of the galaxy and cluster population in a comoving volume (100 Mpc)^3 in a LCDM universe. At z = 0, our computational volume contains 1788 clusters with mass M_cl > 1.1x10^12 Msun, including 18 massive clusters ...
Hugo Martel, Fidèle Robichaud, Paramita Barai   +2 more
openaire   +2 more sources

Red but not dead: unveiling the star-forming far-infrared spectral energy distribution of SpARCS brightest cluster galaxies at 0 < z < 1.8 [PDF]

, 2017
We present the results of a Spitzer/Herschel infrared photometric analysis of the largest (716) and the highest-redshift (z = 1.8) sample of brightest cluster galaxies (BCGs), those from the Spitzer Adaptation of the Red-Sequence Cluster Survey Given the
N. Bonaventura, T. Webb, A. Muzzin, A. Noble, C. Lidman, G. Wilson, H. Yee, J. Geach, Y. Hezaveh, D. Shupe, J. Surace   +10 more
semanticscholar   +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

Early assembly of the most massive galaxies [PDF]

, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins, John P. Stott, Matt Hilton, Scott T. Kay, S. Adam Stanford, Michael Davidson, Mark Hosmer, Ben Hoyle, Andrew Liddle, Ed Lloyd-Davies, Robert G. Mann, Nicola Mehrtens, Christopher J. Miller, Robert C. Nichol, A. Kathy Romer, Martin Sahlén, Pedro T. P. Viana, Michael J. West, V Springel, M Kampakoglou, PG van Dokkum, G De Lucia, RG Bower, A Vale, A Sandage, TR Lauer, CA Collins, DJ Burke, MN Bremer, SA Stanford, P Rosati, R Demarco, CR Mullis, AK Romer, M Hilton, JP Stott, IM Whiley, T Yamada, OJ Eggen, RB Larson, J Binney, A Dekel, DA Wake, C Almeida, Y-T Lin, G Bruzual, G Chabrier   +46 more
core   +1 more source