Results 51 to 60 of about 91,719 (307)

SALT spectroscopic observations of galaxy clusters detected by ACT and a type II quasar hosted by a brightest cluster galaxy [PDF]

Monthly notices of the Royal Astronomical Society, 2014
We present Southern African Large Telescope (SALT) follow-up observations of seven massive clusters detected by the Atacama Cosmology Telescope (ACT) on the celestial equator using the Sunyaev-Zel’dovich (SZ) effect.
B. Kirk, M. Hilton, C. Cress, S. Crawford, J. Hughes, N. Battaglia, J. Bond, Claire Burke, M. Gralla, A. Hajian, M. Hasselfield, A. Hincks, L. Infante, A. Kosowsky, T. Marriage, F. Menanteau, K. Moodley, M. Niemack, J. Sievers, C. Sif'on, Susan Wilson, Edward J. Wollack, C. Zunckel   +22 more
semanticscholar   +1 more source

MORPHOLOGICAL TYPES OF 254 RICH PF GALAXY CLUSTERS

Odessa Astronomical Publications, 2014
We determined the morphological types for 254 rich galaxy clusters from the PF Catalogue of Galaxy Clusters and Groups. The data set contains the PF galaxy clusters, which have no ACO coinciding ones.
E. A. Panko, S. M. Andrievsky, A. V. Gotsulyak   +2 more
doaj   +1 more source

A non-thermal study of the brightest cluster galaxy NGC 1275 - the Gamma-Radio connection over four decades. [PDF]

, 2014
Emission from the active nucleus in the core of the brightest cluster galaxy of the Perseus cluster, NGC 1275, has varied dramatically over the past four decades.
K. Dutson, A. Edge, J. Hinton, M. Hogan, M. Gurwell, W. Alston   +5 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   +3 more sources

The XMM Cluster Survey: The Stellar Mass Assembly of Fossil Galaxies [PDF]

, 2012
This paper presents both the result of a search for fossil systems (FSs) within the XMM Cluster Survey and the Sloan Digital Sky Survey and the results of a study of the stellar mass assembly and stellar populations of their fossil galaxies. In total, 17
A. Kathy Romer, Andrew R. Liddle, Ben Hoyle, Bernardi, Blanton, Cavaliere, Charlot, Chris A. Collins, Christopher J. Miller, Conroy, Craig D. Harrison, Cypriano, D'Onghia, Diego Capozzi, Dubinski, E. J. Lloyd-Davies, Feldmeier, Ferland, Gastaldello, Herberich, John P. Stott, Johnston, Joseph W. Richards, Koester, La Barbera, Lauer, Lavery, Lin, Lotz, Martin Sahlén, Matt Hilton, Maughan, Mehrtens, Mendes de Oliveira, Mendes de Oliveira, Miller, Miller, Milosavljević, Mulchaey, Murante, Nicola Mehrtens, Patton, Paul-James Deadman, Pedro T. P. Viana, Quillen, Richardson, Romer, Rudick, Rudick, Rudick, Ruszkowski, S. Adam Stanford, Salim, Santos, Stott, Tremonti, Voevodkin, Voevodkin, White, Wu, York   +60 more
core   +2 more sources

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

Odessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source

Witnessing the formation of a brightest cluster galaxy at z>2 [PDF]

, 2006
We present deep observations taken with the HST Advanced Camera for Surveys of the central massive galaxy in a forming cluster at z=2.2. The galaxy hosting the powerful radio source MRC 1138-262 is associated with one of the most extensive merger systems
Bahcall, Blakeslee, Canalizo, Cowie, Croton, De Breuck, Dubinski, Dunlop, Ford, Gao, George K. Miley, Haiman, Haiman, Heckman, Holland C. Ford, Kaiser, Kauffmann, Kurk, Kurk, Miley, Miley, Mullis, Nesvadba, Overzier, Pentericci, Pentericci, Pentericci, Pentericci, Roderik A. Overzier, Springel, Stanford, Straughn, Taniguchi, Taniguchi, Venemans, Venemans, Venemans, Villar-Martı´n, West   +38 more
core   +2 more sources

Intracluster medium cooling, AGN feedback, and brightest cluster galaxy properties of galaxy groups - Five properties where groups differ from clusters [PDF]

, 2014
Aims. We aim to investigate cool-core and non-cool-core properties of galaxy groups through X-ray data and compare them to the AGN radio output to understand the network of intracluster medium (ICM) cooling and feedback by supermassive black holes.
V. Bharadwaj, T. Reiprich, G. Schellenberger, H. Eckmiller, R. Mittal, Holger Israel   +5 more
semanticscholar   +1 more source

Evolution of brightest cluster galaxies in X ray clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
A recent paper (Burke, Collins & Mann 2000) presents the analysis of the K-band Hubble diagram of 76 brightest cluster galaxies (BCGs) in X-ray clusters and shows that the properties of BCGs depend on the X-ray luminosity (Lx) of their host clusters.
Brough, S., Collins, C. A., Burke, D. J., Mann, R. G., Lynam, P. D.   +4 more
openaire   +3 more sources

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