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 11 of 11 for “"dwarf spheroidal galaxies"”.
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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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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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On the complex stellar populations of ancient stellar systems
… that led to the properties we observe today in galaxies and in their constituent components. Resolved stellar populations enable us to gain detailed insights on the age and chemical composition of such stellar systems, tracing their properties on a fine spatial scale. The deep investigation of …
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Dark matter searches with cosmic-ray detectors and the Square Kilometre Array
… but also on radio signals from the Milky Way and dwarf spheroidal galaxies. Our main purpose is to constrain the dark matter parameter space under the light of the latest experimental data for cosmic-rays and the new sensitivities reached in radio astronomy. Furthermore, we discuss some of the …
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Evolution of Galaxies - Star Formation Histories in Nearby Spheroids
… is about an investigation into the formation of spheroidal type galaxies. The investigation began with modelling studies of early-type galaxies and spiral bulges (SBs). From galaxy formation modelling studies led by experiments with a sample galaxy, some results were obtained; nonsolar abundance …
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A Dark Matter line search using 3D-modeling of Cherenkov showers below 10 TeV with VERITAS
… like galactic rotation curves that show that the galaxies are rotating too fast to keep their constituent parts, and galaxy clusters that bends the light coming from behind-lying galaxies more than expected with respect to the mass that can be calculated from what can be visibly seen. These …
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Dwarf Galaxies in a Cosmological Context: A Testbench for Galaxy Modeling
… code as an analog to local low-luminosity dwarf irregular and dwarf spheroidal galaxies. The primary goals of this study are to investigate the roles of reionization and supernova feedback in determining the star-formation histories of low-mass dwarf galaxies and to explore the effect of …
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Search for Ultra-faint Milky Way Satellites
… the distribution of observed Milky Way satellite galaxies appears to form a thin polar plane, which is largely inconsistent with the prediction of the standard cosmological model, i.e. an isotropic distribution of dark matter sub-halos. This problem was often seen as a consequence of observational …
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Search for Ultra-faint Milky Way Satellites
… the distribution of observed Milky Way satellite galaxies appears to form a thin polar plane, which is largely inconsistent with the prediction of the standard cosmological model, i.e. an isotropic distribution of dark matter sub-halos. This problem was often seen as a consequence of observational …