Results 71 to 80 of about 89,941 (303)

Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters [PDF]

The Astrophysical Journal, 2020
Abstract We explore connections between brightest cluster galaxies (BCGs) and their host clusters. We first construct a HeCS-omnibus cluster sample including 227 galaxy clusters within 0.02 < z < 0.30; the total number of spectroscopic members from MMT/Hectospec and SDSS observations is 52325.
Antonaldo Diaferio, Antonaldo Diaferio, Jubee Sohn, Margaret J. Geller, Kenneth J. Rines   +4 more
openaire   +4 more sources

Imaging the Thermal and Kinematic Sunyaev-Zel'dovich Effect Signals in a Sample of Ten Massive Galaxy Clusters: Constraints on Internal Velocity Structures and Bulk Velocities [PDF]

, 2019
We have imaged the Sunyaev-Zel'dovich (SZ) effect signals at 140 and 270 GHz towards ten galaxy clusters with Bolocam and AzTEC/ASTE. We also used Planck data to constrain the signal at large angular scales, Herschel-SPIRE images to subtract the ...
Cibirka, Nathália, Golwala, Sunil, Hughes, David, Montaña, Alfredo, Mroczkowski, Tony, Nagai, Daisuke, Reese, Erik D., Sayers, Jack, Sánchez, David, Wilson, Grant W., Zemcov, Michael, Zitrin, Adi, Zuhone, John   +12 more
core   +2 more sources

The shapes of brightest cluster galaxies

The Astrophysical Journal, 1993
The mean isophotal axis ratios are computed for a complete sample of 119 brightest cluster galaxies (BCGs) in Abell clusters. The cumulative distribution function F(q) of axis ratios for the BCGs differs from F(q) for a sample of ordinary elliptical galaxies at only the P=0.14 probability level, as measured by a Kolmogorov Smirnov test.
Tod R. Lauer, Marc Postman, Barbara S. Ryden   +2 more
openaire   +2 more sources

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

On the Origin and Evolution of the Intra-Cluster Light: A Brief Review of the Most Recent Developments

Galaxies, 2021
Not all the light in galaxy groups and clusters comes from stars that are bound to galaxies. A significant fraction of it constitutes the so-called intracluster or diffuse light (ICL), a low surface brightness component of groups/clusters generally found
Emanuele Contini
doaj   +1 more source

A candidate supermassive binary black hole system in the brightest cluster galaxy of RBS 797 [PDF]

, 2013
Context. The radio source at the center of the cool-core galaxy cluster RBS 797 ( z  = 0.35) is known to exhibit a misalignment of its radio jets and lobes observed at different VLA scales, with the innermost ~kpc-scale jets being almost orthogonal to ...
M. Gitti, M. Giroletti, G. Giovannini, L. Feretti, E. Liuzzo   +4 more
semanticscholar   +1 more source

Stellar populations in brightest cluster galaxies [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe present the results of an investigation of a large sample of brightest cluster galaxies (BCGs), their kinematic and stellar population properties and the relationships between these and the properties of the host clusters. We have obtained high signal-to-noise, long-slit spectra of 49 BCGs in the nearby Universe with the Gemini and WHT ...
Loubser, S, Sanchez-Blazquez, P, Soechting, I, Sansom, A   +3 more
openaire   +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

How special are brightest group and cluster galaxies? [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
Abstract We use the Sloan Digital Sky Survey (SDSS) to construct a sample of 625 brightest group and cluster galaxies (BCGs) together with control samples of non-BCGs matched in stellar mass, redshift and colour. We investigate how the systematic properties of BCGs depend on stellar mass and on their privileged location near the cluster ...
von der Linden, Anja, Best, Philip N., Kauffmann, Guinevere, White, Simon D. M.   +3 more
openaire   +4 more sources

THE EVOLUTION OF BRIGHTEST CLUSTER GALAXIES IN A HIERARCHICAL UNIVERSE [PDF]

The Astrophysical Journal, 2012
We investigate the evolution of Brightest Cluster Galaxies (BCGs) from redshift z~1.6 to z~0. We use the semi-analytic model of Croton et al. (2006) with a new spectro-photometric model based on the Maraston (2005) stellar populations and a new recipe for the dust extinction. We compare the model predictions of the K-band luminosity evolution and the J-
Tonini, Chiara, Bernyk, Maksym, Croton, Darren, Maraston, Claudia, Thomas, Daniel   +4 more
openaire   +5 more sources