Results 11 to 20 of about 48,997 (217)

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   +5 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
Fanti, R., Fanti, C., Gioia, I., Branchesi, M.   +3 more
  +10 more sources

Modelling galaxy clustering at high redshift [PDF]

Monthly Notices of the Royal Astronomical Society, 1998
We discuss the theoretical interpretation of observational data concerning the clustering of galaxies at high redshifts. Building on the theoretical machinery developed by Matarrese et al. (1997), we make detailed quantitative predictions of galaxy clustering statistics for a variety of cosmological models, taking into account differences in spatial ...
MOSCARDINI, LAURO, COLES P., LUCCHIN, FRANCESCO, MATARRESE, SABINO   +3 more
openaire   +2 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, Z. L., Han, J. L.
openaire   +2 more sources

New spectroscopic confirmations of high-redshift galaxy clusters [PDF]

Astronomy & Astrophysics, 2005
We present new spectroscopic data in the field of five high-redshift (z>=0.6) candidate galaxy clusters, drawn from the EIS Cluster Candidate Catalog. A total of 327 spectra were obtained using FORS1 at the VLT, out of which 266 are galaxies with secure redshifts.
Olsen, L.F., Zucca, E., Bardelli, S., Benoist, C., da Costa, L., Jørgensen, H.E., Biviano, A., Ramella, M.   +7 more
openaire   +3 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, A. DeGroot, 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   +16 more
openaire   +4 more sources

Hawaii Two-0: high-redshift galaxy clustering and bias [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We perform an analysis of two-point galaxy clustering and galaxy bias using Subaru Hyper-Suprime Cam (HSC) data taken jointly by the Subaru Strategic Program and the University of Hawaii in the Cosmic Evolution Survey (COSMOS) field over an area of 1.8 sq deg.
Róbert Beck, Conor McPartland, Andrew Repp, David Sanders, István Szapudi   +4 more
openaire   +2 more sources

Evaluating the GeoSnap 13‐μ$$ \mu $$m cutoff HgCdTe detector for mid‐IR ground‐based astronomy

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract New mid‐infrared HgCdTe (MCT) detector arrays developed in collaboration with Teledyne Imaging Sensors (TIS) have paved the way for improved 10‐μ$$ \mu $$m sensors for space‐ and ground‐based observatories. Building on the successful development of longwave HAWAII‐2RGs for space missions such as NEO Surveyor, we characterize the first 13‐μ ...
Jarron M. Leisenring, Dani Atkinson, Rory Bowens, Vincent Douence, William F. Hoffmann, Michael R. Meyer, John Auyeung, James Beletic, Mario S. Cabrera, Alexandra Z. Greenbaum, Philip Hinz, Derek Ives, William J. Forrest, Craig W. McMurtry, Judith L. Pipher, Eric Viges   +15 more
wiley   +1 more source

HIROCS – a galaxy cluster survey at high redshifts [PDF]

Proceedings of the International Astronomical Union, 2004
As a step towards our understanding of galaxy evolution and for testing predictions of cosmological models we started a survey for galaxy clusters intending to identify candidates out to redshifts of ~1.5: HIROCS (= Heidelberg InfraRed/Optical Cluster Survey) is a multi-color survey (B, R, i, z and H) covering 11 square degrees in four fields on the ...
Falter, S., Roeser, H. -J., Hippelein, H., Bell, E., Wolf, C.   +4 more
openaire   +2 more sources

Unraveling the enigmatic soft x‐ray excess: Current understanding and future perspectives

Astronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023
Abstract This article explores various theoretical models proposed to explain the soft x‐ray excess phenomenon, including warm Comptonization, ionized reflection models, and ionized outflowing disc winds. The soft x‐ray excess is better understood thanks to crucial observations made by ROSAT, XMM‐Newton, and eROSITA.
Thomas Boller
wiley   +1 more source