Results 1 to 10 of about 15,250,094 (223)
High redshift X-ray galaxy clusters [PDF]
Astronomy and Astrophysics, 2007 The current generation of X-ray observatories like Chandra allows studies with very fine spatial details. It is now possible to resolve X-ray point sources projected into the cluster diffuse emission and exclude them from the analysis to estimate the ``correct'' X-ray observables. In order to verify the incidence of point sources on the cluster thermal
Isabella M Gioia, R Fanti
exaly +8 more sources
Implications of multiple high-redshift galaxy clusters [PDF]
Physical Review D, 2011 11 pages, 7 figures, modified to match published ...
Ben Hoyle +2 more
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From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution
Universe, 2022 Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
exaly +3 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 +3 more
openaire +2 more sources
GALAXY CLUSTERS AT HIGH REDSHIFT AND EVOLUTION OF BRIGHTEST CLUSTER GALAXIES [PDF]
The Astrophysical Journal, 2011 Identification of high redshift clusters is important for studies of cosmology and cluster evolution. Using photometric redshifts of galaxies, we identify 631 clusters from the Canada-France-Hawaii Telescope (CFHT) Wide field, 202 clusters from the CHFT Deep field, 187 clusters from the Cosmic Evolution Survey (COSMOS) and 737 clusters from the Spitzer
Wen, Z. L., Han, J. L.
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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. +4 more
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On the Gas Surrounding High-Redshift Galaxy Clusters [PDF]
Publications of the Astronomical Society of Australia, 2001 AbstractFrancis & 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 at redshift 2 ·38.
Francis, Paul +2 more
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Understanding the non-linear clustering of high-redshift galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We incorporate the non-linear clustering of dark matter halos, as modelled by Jose et al. (2016) into the halo model to better understand the clustering of Lyman break galaxies (LBGs) in the redshift range $z=3-5$. We find that, with this change, the predicted LBG clustering increases significantly on quasi-linear scales ($0.1 \leq r\,/\,h^{-1} \,{\rm ...
Jose, C. +3 more
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The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies
The Astrophysical Journal, 2023 The massive galaxy cluster El Gordo ( z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images.
Brenda L. Frye +43 more
doaj +1 more source
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. +7 more
openaire +3 more sources