Results 51 to 60 of about 90,494 (257)

A 1010 SOLAR MASS FLOW OF MOLECULAR GAS IN THE A1835 BRIGHTEST CLUSTER GALAXY [PDF]

, 2013
We report ALMA Early Science observations of the A1835 brightest cluster galaxy (BCG) in the CO (3–2) and CO (1–0) emission lines. We detect 5 × 1010 M☉ of molecular gas within 10 kpc of the BCG. Its ensemble velocity profile width of ∼130 km s−1 FWHM is
B. McNamara, H. Russell, P. Nulsen, A. Edge, N. Murray, R. Main, A. Vantyghem, F. Combes, A. Fabian, P. Salomé, C. Kirkpatrick, S. Baum, J. Bregman, M. Donahue, E. Egami, S. Hamer, C. O’Dea, J. Oonk, G. Tremblay, G. Voit   +19 more
semanticscholar   +1 more source

A NOVEL APPROACH TO CONSTRAIN THE MASS RATIO OF MINOR MERGERS IN ELLIPTICAL GALAXIES: APPLICATION TO NGC 4889, THE BRIGHTEST CLUSTER GALAXY IN COMA [PDF]

Astrophysical Journal, 2013
Minor mergers are thought to be important for the buildup and structural evolution of massive elliptical galaxies. In this work, we report the discovery of a system of four shell features in NGC 4889, one of the brightest members of the Coma cluster ...
M. Gu, L. Ho, C. Peng, Song Huang School of Astronomy, S. Science, N. University, The Observatories of the Carnegie Institution for Science, Giant Magellan Telescope Organization, Key Laboratory of Optical Astronomy, Astrophysics   +9 more
semanticscholar   +1 more source

Separating baryons and dark matter in cluster cores: a full 2-D lensing and dynamic analysis of Abell 383 and MS2137-23 [PDF]

, 2007
(abridged) We utilize existing imaging and spectroscopic data for the galaxy clusters MS2137-23 and Abell 383 to present improved measures of the distribution of dark and baryonic material in the clusters' central regions.
David J. Sand, Diemand J., Graham P. Smith, Jaffe W., Jean‐Paul Kneib, Natarajan P., Richard S. Ellis, Tommaso Treu   +7 more
core   +2 more sources

MASSIVE MOLECULAR GAS FLOWS IN THE A1664 BRIGHTEST CLUSTER GALAXY [PDF]

, 2013
We report ALMA Early Science CO(1–0) and CO(3–2) observations of the brightest cluster galaxy (BCG) in A1664. The BCG contains 1.1 × 1010 M☉ of molecular gas divided roughly equally between two distinct velocity systems: one from −250 to +250 km s−1 ...
H. Russell, B. McNamara, B. McNamara, B. McNamara, A. Edge, P. Nulsen, R. Main, A. Vantyghem, F. Combes, A. C. Fabian, Norm Murray, P. Salomé, R. Wilman, S. Baum, M. Donahue, C. O’Dea, J. Oonk, Grant R. Tremblay, G. Voit   +18 more
semanticscholar   +1 more source

PS1-12sk IS A PECULIAR SUPERNOVA FROM A He-RICH PROGENITOR SYSTEM IN A BRIGHTEST CLUSTER GALAXY ENVIRONMENT [PDF]

, 2013
We report on our discovery and observations of the Pan-STARRS1 supernova (SN) PS1-12sk, a transient with properties that indicate atypical star formation in its host galaxy cluster or pose a challenge to popular progenitor system models for this class of
N. Sanders, A. Soderberg, R. Foley, R. Chornock, D. Milisavljevic, R. Margutti, M. Drout, M. Moe, E. Berger, Warren R. Brown, R. Lunnan, S. Smartt, M. Fraser, R. Kotak, L. Magill, K. Smith, D. Wright, K. Huang, Y. Urata, J. S.Mulchaey, A. Rest, D. Sand, L. Chomiuk, A. Friedman, R. Kirshner, G. H. Marion, J. Tonry, W. Burgett, K. Chambers, K. Hodapp, R. Kudritzki, P. Price   +31 more
semanticscholar   +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

GALAXY CLUSTERS AT HIGH REDSHIFT AND EVOLUTION OF BRIGHTEST CLUSTER GALAXIES [PDF]

The Astrophysical Journal, 2011
10 pages, 14 figures, 2 tables; added reference, corrected typos; Table 2 is available at http://zmtt.bao.ac.cn/wzl/CV_wen ...
Jin-Lin Han, Z. L. Wen
openaire   +4 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   +9 more sources

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

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