Browsing by Subject "Galaxies -- Clusters"

Browsing by Subject "Galaxies -- Clusters"

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  • Fuller, Todd M.; West, Michael J.; Bridges, Terry J. (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, ...

  • Sato, Taro; Sawicki, Marcin, 1969-; Arcila-Osejo, Liz (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 ...

  • Cheema, Gurpreet (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] ...

  • Carraro, Giovanni; Seleznev, Anton F.; Baume, Gustavo; Turner, David Gerald, 1945- (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 ...

  • Loken, Chris; Metzler, Christopher A.; White, Martin (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 ...

  • West, Michael J.; Cote, Patrick; Marzke, Ronald O. (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 ...

  • Pisano, D. J.; Barnes, David G.; Staveley-Smith, Lister; Gibson, Brad K.; Kilborn, Virginia A.; Freeman, Ken C. (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 ...

  • Guetter, Harry H.; Turner, David Gerald, 1945- (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 ...

  • Savoy, Jonathan; Sawicki, Marcin, 1969-; Thompson, David; Sato, Taro (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 ...

  • Cui, Weiguang; Power, Chris; Knebe, Alexander; Kay, Scott T.; Sembolini, Federico; Elahi, Pascal J.; Yepes, Gustavo; Pearce, Frazer; Cunnama, Daniel; Beck, Alexander M.; Thacker, Robert John, 1970- (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 ...

  • McCarthy, Ian G.; West, Michael J.; Welch, Gary A. (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 ...

  • Blake, Ronald Melvin (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 ...

  • Lemaux, B. C.; Lubin, L. M.; Sawicki, Marcin, 1969-; Martin, C.; Lagattuta, D. J.; Gal, R. R.; Kocevski, D.; Fassnacht, C. D.; Squires, G. K. (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 ...

  • Majaess, Daniel J.; Turner, David Gerald, 1945-; Bidin, C. Moni; Geisler, D.; Borissova, J.; Minniti, D.; Bonatto, C.; Gieren, W.; Carraro, G.; Kurtev, R. (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 ...