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Dissertations / Theses on the topic 'Clusters of galaxies'

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Published: 4 June 2021

Last updated: 18 May 2024

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1

Millington, S. J. C. "Clusters of galaxies." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382461.

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2

Jeltema, Tesla Erin. "Cosmology with clusters of galaxies : high-redshift clusters and the evolution of cluster substructure." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28372.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.<br>Includes bibliographical references (p. 85).<br>Clusters of galaxies have become an important cosmological tool, yet we do not un-erstand many aspects of their formation and development. In this thesis, I pursue two projects aimed at using clusters to constrain cosmology and better understanding cluster evolution. First, I examine the Chandra observation of MS1054-0321. MS1054-0321 is the highest redshift cluster in the Einstein Medium Sensitivity Survey (EMSS), and it was one of the first high-redshift clusters

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3

De, Lucia Gabriella. "Evolution of Galaxies in Clusters." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-25762.

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4

White, David Allen. "The multiphase medium of elliptical galaxies and clusters of galaxies." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240155.

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5

Piffaretti, Rocco. "Faraday rotation in clusters of galaxies." Zürich : ETH, Eidgenössische Technische Hochschule, 2000. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=17.

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6

Reblinsky, Katrin. "Projection effects in clusters of galaxies." Diss., lmu, 2000. http://nbn-resolving.de/urn:nbn:de:bvb:19-4153.

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7

Mora, Marcelo D. "Star clusters in unperturbed spiral galaxies." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-92728.

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8

MacLaren, Ian. "Studies of distant clusters of galaxies." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6891/.

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A technique of constructing crude, low-resolution Spectral Energy Distributions (SEDs) for galaxies in distant clusters, using a set of intermediate bandwidth filters and a CCD detector, is developed which is capable of redressing many of the problems which have previously beset work in this field. The technique has been used to study galaxies in the distant clusters 0016+16 (z = 0.54) and Abell 370 (z = 0.37).These SEDs are then used to individually classify each object in the CCD field, ascribing both an estimated redshift and a galaxy type. The SEDs have been extended into the rest-frame ul

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9

Basson, J. F. "Cold gas in clusters of galaxies." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596456.

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The intracluster gas has only been fully explored in the last decade or so with the launch of the <i>ROSAT</i> satellite in 1990, and more recently the <i>Chandra</i> and <i>XMM-Newton</i> satellites in 1999. The data obtained from these X-ray telescopes has provided significant information about the intracluster medium. In this thesis, a theoretical and numerical study of the nature of the ICM is undertaken. In particular the formation and influence of cold gas clouds and the effects of powerful FR-II radio sources are considered. Clusters are modelled as a multi-phase cooling gas in a dark-m

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10

Moore, Ben. "Groups, clusters and superclusters of galaxies." Thesis, Durham University, 1991. http://etheses.dur.ac.uk/6091/.

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Galaxies are observed in a diverse range of associations. Understanding the dynamical, statistical and clustering properties of aggregations of galaxies forms the main body of this thesis. On the smallest scale, we use a model for the Local Group to study the formation of a typical galaxy system and to understand the mass distribution within the Local Group. Our model is a binary system excised from numerical simulation of a Universe dominated by cold dark matter which has similar radial velocity and separation as M31 and the Milky Way. We find that the timing argument provides a reliable meth

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11

De, Filippis Elisabetta. "Clusters of galaxies in x-rays." Thesis, Liverpool John Moores University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275933.

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12

Siddiqui, Hassan. "ROSAT observations of clusters of galaxies." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/35783.

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Observations of four rich clusters of galaxies made using the Position Sensitive Proportional Counter (PSPC) instrument onboard the German Rontgensatellit (ROSAT) observatory were analysed. These data were complemented by ROSAT Wide Field Camera (WFC), Ginga and optical Automated Plate Measuring Machine (APM) information. Cluster properties, including the temperature profile, gas mass and total gravitational mass were investigated. Estimates for the mass deposition rates of central cooling flows, where appropriate, were made. Substructure was investigated using isophotal analysis and the emplo

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13

Marshall, Philip James. "Bayesian analysis of clusters of galaxies." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615701.

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14

Mora, Marcelo. "Star clusters in unperturbed spiral galaxies." kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/9272/.

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15

Dennis, Taylor, and Beverly J. Smith. "Clumps and Clusters in Ring Galaxies." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/209.

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For a sample of collisional ring galaxies, archival Hubble Space Telescope images were used to compare individual star clusters and kpc-sized clumps of star formation to each other in a variety of ways. For each galaxy, instrument, and filter, the magnitude of the brightest cluster in a clump was compared to the magnitude of the entire clump, and the fraction of the flux of the clusters in a clump over the flux of the entire clump was calculated and compared to star formation rates. In addition, a cluster luminosity function for each galaxy was derived. Comparing the brightest cluster in a clu

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16

Sartoris, Barbara. "Cosmological constraints with clusters of galaxies." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7738.

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2010/2011<br>This Ph.D. Thesis is devoted to the derivation of cosmological constraints by using clusters of galaxies as probes. Clusters of galaxies provide potentially powerful means to measure the growth of cosmic structures, as well as excellent astrophysical laboratories. As such they have played an important role in establishing the current cosmological paradigm. On one hand, the results presented in this Thesis provide cosmological constraints from the best X-ray surveys of distant galaxy clusters available at present. On the other hand, the techniques developed to forecast constr

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17

Sarron, Florian. "Galaxy clusters in the cosmic web Searching for filaments and large-scale structure around DAFT/FADA clusters Weak lensing study of 16 DAFT/FADA clusters: Substructures and filaments." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS366.

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En tant que structures liées les plus massives de l’univers, les amas de galaxies permettent d’étudier l’influence de l’environnement sur l’évolution des galaxies. Dans ce manuscrit, je présente AMASCFI, un algorithme de détection d’amas développé durant la thèse et utilise le catalogue d’amas obtenu à partir des décalages spectraux photométriques du relevé Canada France Hawaii Telescope Legacy Survey (CFHTLS) pour étudier le rôle des amas sur l’évolution des galaxies. Je démontre les bonnes performances d’AMASCFI sur Euclid et le CFHTLS à partir de données simulées. Je l’applique au CFHTLS po

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18

Owers, Matthew Scott Physics Faculty of Science UNSW. "The effects of merging and environment on galaxies and clusters of galaxies." Publisher:University of New South Wales. Physics, 2008. http://handle.unsw.edu.au/1959.4/42795.

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This thesis addresses two fundamental questions in astrophysics: (i) To what extent is environment a driver of galaxy evolution? And (ii) How does hierarchical structure formation affect the galaxy environment? The former is addressed by examining the environments of starburst galaxies, the latter by examining clusters undergoing major mergers with focus placed on the efficacy of ??cold fronts?? in identifying systems that have recently undergone a major merger - an essential first step to understanding their impact. For the first of these studies, the 2dFGRS was exploited to select large sam

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19

Clarke, Tracy E. "Probing magnetic fields in clusters of galaxies." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ50043.pdf.

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20

Lefebvre, Dominic. "Microwave background anisotropies from clusters of galaxies." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318046.

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21

Dalton, Gavin Bruce. "A survey of rich clusters of galaxies." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314836.

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22

Stott, John Philip. "The evolution of galaxies in massive clusters." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2287/.

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We present a study of the evolution of galaxies in massive X-ray selected clusters across half the age of the Universe. This encompasses galaxies on the red sequence from the Brightest Cluster Galaxy (BCG) to the faint red population. We begin at the tip of the red sequence with an investigation into the near infrared evolution of BCGs since z =1. By comparing the BCG Hubble diagram and near-infrared colour evolution to a set of stellar population and semi-analytic models we constrain the evolution and formation redshift of these massive galaxies. Moving down in luminosity from the BCG, in cha

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23

Kay, Scott Thomas. "Modelling the properties of galaxies and clusters." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4246/.

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This thesis examines various properties of galaxies and clusters within hierarchical models of structure formation. A simple model based on analytical scaling relations is applied to X-ray observations of clusters at low and high redshift, in an attempt to constrain cosmological parameters from their evolutionary properties. It is found that the density parameter, Ωo cannot be constrained using the data alone. Two independent constraints on the slope of the linear power spectrum, infer values of Ωo < 0.7 at 95 per cent confidence. The remainder of this thesis concentrates on the method of cosm

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24

Smail, Ian Robert. "Gravitational lensing by rich clusters of galaxies." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/10489/.

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We present observations and analysis of gravitationally lensed systems designed to test the usefulness of gravitational lensing as a probe into the nature of faint galaxies (B(_j) ≤ 27). The analysis techniques used also provide unique observational constraints on the masses and morphologies of the lensing clusters. Using a catalogue of giant arc candidates constructed with a well determined selection function we initially examine the possible uses of such a catalogue to provide information on the redshift distribution of galaxies to B(_j) ~ 26. We conclude that the extreme sensitivity of the

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25

Rowley, David R. "Formation and evolution of clusters of galaxies." Thesis, University of Sussex, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412670.

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26

Edge, Alastair Clouston. "X-ray emission from clusters of galaxies." Thesis, University of Leicester, 1989. http://hdl.handle.net/2381/35873.

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Clusters of galaxies are the largest gravitationally bound systems known. The study of clusters can therefore provide information on the distribution of matter in the Universe on the largest scales. The X-ray emission from clusters is of particular interest, as the gas held within the gravitational potential well of a cluster responds to the total mass ('Dark' and 'Visible') of that cluster. This thesis is based upon a sample of 44 observations of clusters made by EXOSAT which provided both imaging and spectral data. The data give well determined luminosities, temperatures, iron abundances and

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27

Wilcox, Harry. "Constraining gravity models with clusters of galaxies." Thesis, University of Portsmouth, 2016. https://researchportal.port.ac.uk/portal/en/theses/constraining-gravity-models-with-clusters-of-galaxies(e6fa2dcf-2c33-4ae1-85ac-316dc84e31dd).html.

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An accepted explanation for the accelerated expansion of the late-time Universe is to modify the Einstein equation, either by adding a component to the energy-momentum tensor via dark energy, or to the Einstein tensor via a modification to gravity. The second of these options often involves the introduction of a scalar field, which couples to the matter components of the Universe and gives rise to a fifth force, of the same order of magnitude as gravity. Through a variety of experiments and astronomical observations, this fifth force has been demonstrated to be negligible on Terrestrial and So

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28

Unewisse, Anne Margaret. "Radio emission from southern clusters of galaxies." Thesis, The University of Sydney, 1993. https://hdl.handle.net/2123/26671.

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Radio, optical, far-infrared and X-ray sources lying towards galaxy clusters listed in the southern portion of the Abell, Corwin and Olowin rich cluster catalogue (ACO) are presented. The bulk of the observational work is a radio survey of 39 nearby (distance class D < 3) southern ACO clusters undertaken at 843MHz with the Molonglo Observatory Synthesis Telescope. Also included are studies of 408MHz MRC radio sources and 60 pm IRAS far-infrared sources in the direction of ACO clusters. The survey results are presented in two forms: i) as a series of radio images, centred on each surveyed c

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29

Pierce, Michael John. "Spectroscopy of extra-galactic globular clusters." Australasian Digital Thesis Program, 2006. http://adt.lib.swin.edu.au/public/adt-VSWT20070731.104253/index.html.

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Thesis (Ph.D) - Swinburne University of Technology, Faculty of Information & Communication Technologies, 2006.<br>A dissertation presented in fulfilment of the requirements of for the degree of Doctor of Philosophy, Faculty of ICT, Swinburne University of Technology, 2006. Typescript. Bibliography p. 90-99.

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30

Fellhauer, Michael. "Could merged massive stellar clusters build up a dwarf galaxy ? /." Aachen : Shaker Verl, 2001. http://catalogue.bnf.fr/ark:/12148/cb37739238k.

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31

Lewis, Alexander John Robert. "Ultra-red galaxies." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33044.

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Dusty star-forming galaxies (DSFGs) are highly luminous (LFIR ≳ 10¹² L⊙), very distant (z ≳2.5) and ≳ 10x rarer then 'normal', NIR-selected (BzK), star-forming galaxies. Capable of producing a Mstars ≳ 10¹¹-M⊙ galaxy after a tburst ~ 100-Myr burst of late-stage, merger-induced star formation, DSFGs naturally provide extreme laboratories with which to study the formation and evolution of massive structures within the Universe. Thus far, however, theoretical models have struggled to reconcile the observed abundance and redshift distribution of these massive, dust-enshrouded galaxies that occupy

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32

Harris, William E., Stephanie M. Ciccone, Gwendolyn M. Eadie, Oleg Y. Gnedin, Douglas Geisler, Barry Rothberg, and Jeremy Bailin. "GLOBULAR CLUSTER SYSTEMS IN BRIGHTEST CLUSTER GALAXIES. III. BEYOND BIMODALITY." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/622870.

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We present new deep photometry of the rich globular cluster (GC) systems around the Brightest Cluster Galaxies UGC 9799 (Abell 2052) and UGC 10143 (Abell 2147), obtained with the Hubble Space Telescope (HST) ACS and WFC3 cameras. For comparison, we also present new reductions of similar HST/ACS data for the Coma supergiants NGC 4874 and 4889. All four of these galaxies have huge cluster populations (to the radial limits of our data, comprising from 12,000 to 23,000 clusters per galaxy). The metallicity distribution functions (MDFs) of the GCs can still be matched by a bimodal-Gaussian form whe

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33

Rostagni, Florent. "Classification morphologique d'un échantillon optique d'amas de galaxies." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4055/document.

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Les amas de galaxies sont l'une des sondes cosmologiques permettant de contraindre les modèles d'univers, via leur fonction de masse et leur vitesse de croissance, elles-mêmes mesurées par l'état dynamique des amas. Les grands relevés présents et futurs permettent d'avoir accès à une information plus nombreuse et plus complète sur les amas de galaxies et donc d'utiliser de nouvelles méthodes de détermination de leur état dynamique. Dans cette thèse, une nouvelle méthode de caractérisation morphologique 2+1D des amas a été développée afin d'établir une nouvelle classification des amas. Il s'agi

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34

Zibetti, Stefano. "Diffuse stellar components in galaxies and galaxy clusters." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-30331.

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35

Schäfer, Björn Malte. "Methods for detecting and characterising clusters of galaxies." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-40652.

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36

Makiya, Ryu. "Cosmic-Ray Acceleration in Galaxies and Galaxy Clusters." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/175125.

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37

Barger, Amy Josephine. "The morphological evolution of galaxies in distant clusters." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627567.

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38

D'Eugenio, Francesco. "Kinematics and shapes of galaxies in rich clusters." Thesis, University of Oxford, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665490.

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In this work we have studied the relationship between the kinematics and shapes of Early Type Galaxies (ETGs) in rich clusters. In particular we were interested to extend the kinematic morphology density relation to the richest clusters. We obtained data from FLAMES/GIRAFFE to probe the stellar kinematics of a sample of 30 ETGs in the massive cluster Abell 1689 at z = 0.183, to classify them as Slow Rotators (SRs) or Fast Rotators (Frs). To date, this is the highest redshift cluster studied in this way. We simulated FLAMES/GIRAFFE observations of the local SAURON galaxies to account for the bi

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39

Buote, David Augustin. "The structure of elliptical galaxies and galaxy clusters." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36556.

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40

Milvang-Jensen, Bo. "The evolution of spiral galaxies into distant clusters." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275913.

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41

Spurgeon, Louise Elizabeth. "XMM and ROSAT observations of clusters of galaxies." Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/30665.

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I present an investigation into the X-ray properties of galaxy clusters, consisting of a principal component analysis of ROSAT data and studies of three clusters observed with the XMM-Newton satellite. The principal component analysis provides an investigation into similarities between cluster surface brightness profiles. Initial results for 42 clusters are presented and compared to existing models. The cluster profiles are reproduced to good accuracy using three principal components. Correlation of the principal components to physical properties is investigated but the results are inconclusiv

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42

Johnston, Evelyn Joanne. "The formation of lenticular galaxies in nearby clusters." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/14484/.

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Lenticular (S0) galaxies have long been thought of as evolved spirals, in which the star formation has been suppressed, the spiral arms have faded, and the luminosity of the bulge has been built up relative to the disc. However, the sequence of events that explains these three observations and leads to the formation of the final S0 galaxy is still uncertain. The progenitor spirals generally consist of bulges with old stellar populations surrounded by young, bright discs. Therefore, in order to explain the `quenching' of star formation in the disc and related increase in the bulge luminosity, a

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43

Randriamampandry, Solohery Mampionona. "Stellar masses of star forming galaxies in clusters." University of the Western Cape, 2010. http://hdl.handle.net/11394/3028.

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Magister Scientiae - MSc<br>We determine the stellar mass of star forming galaxies in the X-ray luminous cluster MS 0451.6-0305 at z ∼ 0.54. The stellar masses are estimated from fitting model spectral energy distributions (SEDs) to deep, optical UBRIz observations obtained from WIYN 3.5m telescope and public NIR K-band image from Palomar Observatory telescope. The model SEDs are based on the stellar population synthesis (SPS) model of Bruzual & Charlot (2003) and Conroy et al. (2009) that span a wide range of age, star formation history, Initial Mass Function (IMF), metallicity and dust conte

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44

Ziskin, Viktor. "Simulations of clusters of galaxies with thermal conduction." Available to US Hopkins community, 2003. http://wwwlib.umi.com/dissertations/dlnow/3080808.

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45

Yoshikawa, Koji. "Cosmological Hydrodynamic Simulations of Galaxies and Galaxy Clusters." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149981.

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46

Cortese, Luca. "Environmental effects on galaxy evolution in nearby clusters." Aix-Marseille 1, 2005. http://www.theses.fr/2005AIX11018.

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Ce travail est dédié à l'étude des effets d'environnement sur l'évolution des galaxies, en utilisant un échantillon multi-longueur d'onde. En combinant pour la première fois des observations UV de GALEX à des données en optique, et en infrarouge j'ai déterminé l'histoire évolutive des galaxies. Touts les résultats obtenus montrent que : - les elliptiques géantes sont vieilles, à l'inverse des elliptiques naines qui contiennent toujours des populations stellaires jeunes. - L'importance relative des différents mécanismes d'environnement varie avec l'âge de l'univers. Les interactions de marée on

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Fang, Yuedong, Joseph Clampitt, Neal Dalal, Bhuvnesh Jain, Eduardo Rozo, John Moustakas, and Eli Rykoff. "Tidal stripping as a test of satellite quenching in redMaPPer clusters." OXFORD UNIV PRESS, 2016. http://hdl.handle.net/10150/622738.

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When darkmatter haloes are accreted by massive host clusters, strong gravitational tidal forces begin stripping mass from the accreted subhaloes. This stripping eventually removes all mass beyond a subhalo's tidal radius, with unbound mass remaining in the vicinity of the satellite for at most a dynamical time t(dyn). The N-body subhalo study of Chamberlain et al. verified this picture and pointed out a useful observational consequence: correlations between subhaloes beyond the tidal radius are sensitive to the infall time, t(infall), of the subhalo on to its host. We perform this correlation

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48

Masters, Craig Eugene Ashman Keith M. "The formation of low metallicity globular clusters." Diss., UMK access, 2007.

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Thesis (Ph. D.)--Dept. of Physics and Dept. of Mathematics. University of Missouri--Kansas City, 2007.<br>"A dissertation in physics and mathematics." Advisor: Keith M. Ashman. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Nov. 13, 2007. Includes bibliographical references (leaves 67-70). Online version of the print edition.

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49

Kindl, Enrico. "A photometric and morphological study of compact groups of galaxies and their environments." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/30722.

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This thesis examines properties of galaxies in and around compact groups. Astrometry, photometry and morphological classifications are derived from CCD images for all 463 galaxies in Hickson's sample of 100 compact groups. Some minor revisions to the membership of the original catalog are made. At high galactic latitude (b > 30°), the catalog is estimated to be 90% complete for groups with total B[formula omitted] magnitude 13.0 or less. 49% of all the catalogued galaxies, and 48% of first-ranked galaxies are spiral. No significant difference is found between the distribution of morphological

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De, Propris Roberto. "The faint end of the luminosity function in clusters of galaxies." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21930.pdf.

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