Results 1 to 10 of about 90,689 (284)

On the Gas Surrounding High Redshift Galaxy Clusters [PDF]

Publications of the Astronomical Society of Australia, 2000
Francis & Hewett (1993) identified two 10-Mpc scale regions of the high redshift universe that were seemingly very overdense in neutral hydrogen. Subsequent observations showed that at least one of these gas-rich regions enveloped a cluster of galaxies ...
Binette, Bruce E. Woodgate, Campos, Colless, Djorgovski, Francis, Greg M. Wilson, Mar, Martínez-González, Mo, Paul J. Francis, Pentericci, Pentericci, Véron   +13 more
core   +8 more sources

Implications of multiple high-redshift galaxy clusters [PDF]

Physical Review D, 2011
To date, 14 high-redshift (z>1.0) galaxy clusters with mass measurements have been observed, spectroscopically confirmed and are reported in the literature. These objects should be exceedingly rare in the standard LCDM model.
Ben Hoyle, G. Hasinger, Licia Verde, M. Pierre, R. A. Sunyaev, Raul Jimenez   +5 more
core   +7 more sources

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 ...
Wen Zl, J.L Han, Wen Zl, J.L Han
semanticscholar   +6 more sources

High redshift X-ray galaxy clusters [PDF]

SPIE Newsroom, 2007
In this paper we re-visit the observational relation between X-ray luminosity and temperature for high-z galaxy clusters and compare it with the local L_X-T and with theoretical models. To these ends we use a sample of 17 clusters extracted from the Chandra archive supplemented with additional clusters from the literature, either observed by Chandra or
M. Branchesi, I. M. Gioia, C. Fanti, R. Fanti   +3 more
semanticscholar   +12 more sources

Galaxy Merger Candidates in High-redshift Cluster Environments [PDF]

The Astrophysical Journal, 2017
Abstract We compile a sample of spectroscopically and photometrically selected cluster galaxies from four high-redshift galaxy clusters ( ) from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS), and a comparison field sample selected from the UKIDSS Deep ...
A. G. Delahaye, T. M. A. Webb, J. Nantais, Degroot A, G. Wilson, A. Muzzin, H. K. C. Yee, R.Foltz, A.G. Noble, R. DeMarco, A. Tudorica, M. C. Cooper, C. Lidman, S. Perlmutter, B. Hayden, K. Boone, J. Surace, A. G. Delahaye, T. M. A. Webb, J. Nantais, Degroot A, G. Wilson, A. Muzzin, H. K. C. Yee, R.Foltz, A.G. Noble, R. DeMarco, A. Tudorica, M. C. Cooper, C. Lidman, S. Perlmutter, B. Hayden, K. Boone, J. Surace   +33 more
semanticscholar   +9 more sources

Weak lensing by high-redshift clusters of galaxies [PDF]

Astronomy & Astrophysics, 2003
We use weak lensing shear measurements of six z>0.5 clusters of galaxies to derive the mean lensing redshift of the background galaxies used to measure the shear.
Douglas Clowe, Gerard A. Luppino, Nick Kaiser, I. M. Gioia   +3 more
openalex   +3 more sources

The K Band Luminosity Functions of Galaxies in High Redshift Clusters [PDF]

Proceedings of the International Astronomical Union, 2004
K band luminosity functions (LFs) of three, massive, high redshift clusters of galaxies are presented. The evolution of K*, the characteristic magnitude of the LF, is consistent with purely passive evolution, and a redshift of forma tion z = 1.5-2 ...
Ellis, S. C., Jones, L. R.
core   +2 more sources

The association of galaxy clusters with moderately-high-redshift quasars [PDF]

Symposium - International Astronomical Union, 1986
CCD images of quasars having redshifts between 0.3 and 0.65 are analyzed to study the association of galaxies with quasars. Average luminosity functions (LF) of the excess galaxies associated with the radio-loud quasars are determined. It is found that for the sub-sample with z>0.55, there is a significant brightening of the characteristic magnitude
H. K. C. Yee, Richard F. Green
openalex   +2 more sources

High Redshift Galaxy Clusters as Probes of Cosmology [PDF]

, 2001
A few, simple and qualitative examples of the potential of galaxy clusters as diagnostics of cosmology are presented. In relation to these we discuss briefly three ongoing or forthcoming cluster surveys in the optical/NIR, X-rays and the cosmic microwave radiation background.
Jesper Sommer‐Larsen, Martin Götz
openalex   +3 more sources

Methods for identifying high‐redshift galaxy cluster candidates [PDF]

Astronomische Nachrichten, 2019
AbstractRecent theories linked long gamma ray bursts (GRBs) to galaxies with rapid star formation or starburst; thus, we expect that long GRBs (LGRBs) are more frequent in midcluster galaxies where mergers and tidal interactions between gas‐rich galaxies are more likely to occur. Yet there is no galaxy cluster known to be associated with LGRBs.
Sándor Pintér, L. G. Balázs, Z. Bagoly, I. Horváth, I. I. Racz, Viktor L. Tóth   +5 more
openalex   +3 more sources