Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 351 for “"dwarf"”.
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Neutral Hydrogen in Local Group Dwarf Galaxies
The gas content of the faintest and lowest mass dwarf galaxies provide means to study the evolution of these unique objects. The evolutionary histories of low mass dwarf galaxies are interesting in their own right, but may also provide insight into fundamental cosmological problems. These include …
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Observational Insights into White Dwarf Planetary Systems
… characterisation. Spectroscopic studies of white dwarfs ‘polluted’ by planetary material are a unique laboratory allowing measurements of their bulk composition. This thesis focuses on these polluted white dwarfs to observationally investigate how the material ultimately accretes onto the white …
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The gravity oscillations of white dwarf stars
… investigation of the oscillations of white dwarfs which is discussed below was begun at the suggestion of Professor Warner soon after the discovery of periodic variations in several cataclysmic variables. Its completion within a reasonable time was greatly helped by the availability of a …
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HI survey of local group dwarf galaxies
This thesis investigates the HI properties of 3 dwarf irregular galaxies and one blue compact dwarf galaxy of the Local Group. The data set of each dwarf irregular galaxy was obtained with the Karoo Array Telescope (KAT-7) while the blue compact dwarf was observed with the Dominion Radio …
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Dwarf Tomatoes in an Indoor Vertical System
… conducted to evaluate the potential of producing dwarf tomatoes (Solanum lycopersicum L.) in an indoor vertical system. Cultivars 'Micro Tom', 'Jochalos', and 'Venus' were grown under the three daily light integral (DLI) levels of 16.9, 22.7, and 27.9 mol·m-2·day-1. Cultivar had an effect on …
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Stellar phase-space clustering in dwarf spheroidal galaxies
… at clustering of stars in phase-space in two dwarf spheroidal galaxies: Fornax and Sculptor. We use a novel measurement based on the particle phase space density, P2SAD, as a 2D extension of the two point correlation function, averaged with a number count within a volume in phase-space. The …
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Simulations of the Formation of Tidal Dwarf Galaxies
Wir praesentieren die Ergebisse von numerischen Simulationen der Gezeitenarme in wechselwirkenden Galaxien. Die Entstehung von Zwerggalaxien in diesen Gezeitenarmen wurde mit sehr hoher Aufloesung untersucht. Wir stellen fest, dass in reinen N-body Simulationen keine kollabierten Objekte in den …
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Využití formátu DWARF při ladění generických simulátorů mikroprocesorů
… s laděním na úrovni zdrojového kódu, formátem DWARF a jeho možným použitím. Dále představuje čtenáři s projektem Lissom, v jehož rámci práce vznikla. Náplní práce dále bylo využití získaných poznatků při rozšíření funkcí debuggeru v projektu Lissom.
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Spectroscopy of white dwarf stars observed by HETDEX.
Approximately 97% of all stars will become white dwarf stars at the end of their life cycles, making them excellent benchmarks for testing theories of stellar evolution. For the purposes of numerical modelling, they can be treated as simple objects composed of two structures that can be treated …
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Some Plant Characteristics Affecting Yield in Dwarf Broomcorn
Made available in DSpace on 2014-12-04T20:16:57Z (GMT). No. of bitstreams: 1 5805456.pdf: 4894165 bytes, checksum: bd9a902c389a05f4bc46472c7b31930a (MD5) Previous issue date: 1958
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Exploring star formation in dwarf galaxies at Z1
… measurements of star formation rates (SFRs) for dwarf galaxies at z~1 (when the Universe was approximately half its current age) using the Hubble Space Telescope (HST).We target a sample derived from the Redshift One LDSS3 Emission Line Survey (ROLES), which used [OII]3727 as a tracer of star …
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Time series photometry of the dwarf planet Eris
This project utilizes time series photometry to attempt to find the period of the newly discovered Kuiper Belt Object (KBO), Eris. Eris is known to have a radius slightly larger than Pluto and an extremely high albedo of 86%, indicative of fresh surface ices. This high albedo makes it likely that …
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Chemical and kinematical evolution in nearby dwarf spheroidal galaxies
Dwarf spheroidal (dSph) galaxies are the least massive and luminous objects known to exist. These galaxies are often considered as the fossil building blocks of massive systems predicted by some cosmological models. Nonetheless, evidence has been mounting that this idea of hierarchical assembly may …
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Environmental Influences On Dwarf Galaxy Evolution: The Group Environment
… the low end of the galaxy mass function for the dwarf systems that constitute the most numerous extragalactic population in the local universe [Karachentsev et al., 2004]. Inspired by recent progress in our understanding of the Local Group, this dissertation addresses how much of this knowledge …
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Studies on Barley Yellow-Dwarf Virus-Vector-Host Interrelationships
Made available in DSpace on 2014-12-10T23:32:39Z (GMT). No. of bitstreams: 1 7105256.pdf: 4771867 bytes, checksum: ff698a24d513d87c0a3d3d5d77b4f96d (MD5) Previous issue date: 1970
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Genome Analysis of the Ashanti Dwarf pig of Ghana
The Ashanti Dwarf pig, an indigenous pig breed of Ghana, like other local pigs in Africa is mainly raised under extensive production farming systems with little financial inputs by resource poor farmers who are mostly women to provide them with food, employment and an income. These indigenous pigs …
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