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Browsing by Subject "Galaxies -- Clusters"
Now showing items 1-20 of 20
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(American Astronomical SocietyIOP Science, 1999-07-01)We have examined the orientations of brightest cluster galaxies (BCGs) in poor MKW (Morgan, Kayser, and White) and AWM (Albert, White, and Morgan) clusters and find that, like their counterparts in richer Abell clusters, ...
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(Oxford University PressRoyal Astronomical Society, 2014)We study the angular clustering of z ∼ 2 galaxies using ∼40 000 star-forming (SF) and ∼5000 passively evolving (PE) galaxies selected from ∼2.5 deg[superscript 2] of deep (K[subscript lim] = 23–24 AB) Canada–France–Hawaii ...
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(Halifax, N.S. : Saint Mary's University, 2017)Using a sample of gzK selected passive galaxies at z ~ 1.6 covering an effective area of 27 deg[superscript 2], we used the clustering measurements of Ultra Massive Passively Evolving Galaxies (UMPEGs, M[subscript stellar] ...
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(Oxford University Press, 2016-02-01)Multicolour photometry of the stellar populations in five fields in the third Galactic quadrant centred on the clusters NGC 2215, NGC 2354, Haffner 22, Ruprecht 11, and ESO489 SC01 is interpreted in terms of a warped and ...
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(American Astronomical SocietyIOP Publishing, 2001-02-01)In modern hierarchical theories of structure formation, rich clusters of galaxies form at the vertices of a weblike distribution of matter, with filaments emanating from them to large distances and with smaller objects ...
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(American Astronomical Society, 1998-07)We examine the formation of giant elliptical galaxies using their globular cluster (GC) systems as probes of their evolutionary history. The bimodal distributions of GC metallicities in such galaxies are often cited as ...
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(IOP Publishing Limited, 2011-12)We have conducted an H I 21 cm emission-line survey of six loose groups of galaxies chosen to be analogs to the Local Group. The survey was conducted using the Parkes multibeam instrument and the Australia Telescope Compact ...
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(The American Astronomical Society, 2017-03-03)High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified E ≈ 3.5 keV emission line reported in several low-resolution studies of various massive ...
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(American Astronomical Society, 1997-06)Photoelectric and CCD photometry (to a limit of V=17.0) is presented for 61 and 243 stars, respectively--a total of 279 individual stars--in and about IC 1590, a young galactic cluster embedded in the nebulosity of NGC ...
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(American Astronomical SocietyIOP Publishing, 2011-08-20)We investigate the luminosity-dependent clustering of rest-frame UV-selected galaxies at z ∼ 4, 3, 2.2, and 1.7 in the Keck Deep Fields, which are complete to R = 27 and cover 169 arcmin[superscript 2]. We find that at z ...
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(Halifax, N.S. : Saint Mary's University, 2022-08-25)The distribution of stars and stellar remnants within globular clusters holds clues about their formation and long-term evolution. In this work, we infer best-fitting multimass models for a number of Milky Way globular ...
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(Oxford University Press, 2016-06-01)Building on the initial results of the nIFTy simulated galaxy cluster comparison, we compare and contrast the impact of baryonic physics with a single massive galaxy cluster, run with 11 state-of-the-art codes, spanning ...
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(American Astronomical SocietyIOP Publishing, 2002-03-10)We report the results of experiments aimed at reducing the major problem with cooling flow models of rich cluster X-ray sources, i.e., the fact that most of the cooled gas or its products have not been found. Here we show ...
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(Halifax, N.S. : Saint Mary's University, 2019)Satellite galaxies around massive central galaxies can provide important information about galactic environmental effect. In this thesis, we selected thousands of massive (log(Mcen/M☉) > 11.15) ...
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(Oxford University Press, 2017-07-20)We estimate the stellar mass that satellite galaxies lose once they enter groups (and clusters) by identifying groups in a high-resolution cosmological N-body simulation, assigning entry masses to satellite ...
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(Halifax, N.S. : Saint Mary's University, 1996)We have used CFHT observations in Cousins B and R to probe the structure of the supergiant elliptical galaxy NGC 6166 in Abell 2199. We utilize the isophotal and aperture photometry of nuclei B and C to search for evidence ...
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(American Astronomical SocietyIOP Publishing, 2009-07-20)We present results of a spectroscopic search for Ly[alpha] emitters (LAEs) in the Cl1604 supercluster field using the extensive spectroscopic Keck/DEep Imaging Multi-Object Spectrograph database taken as part of the ...
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(Springer Nature, 2017-11--2)The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae1. Therefore, X-ray spectroscopy of the intracluster medium ...
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Spectroscopic and structural properties of galaxies in a cluster environment 5.3 billion years ago (Halifax, N.S. : Saint Mary's University, 2023-08-09)We study how environment affects the structural and spectroscopic properties of galaxies in a massive merging cluster at ζ = 0.53. We obtain follow up spectroscopic observations of the cluster, originally identified ...
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(EDP Sciences, 2012-01)Approximately 14% of known Galactic open clusters possess absolute errors ≤20% as evaluated from n ≥ 3 independent distance estimates, and the statistics for age estimates are markedly worse. That impedes such diverse ...
Now showing items 1-20 of 20