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Showing 1 to 2 of 2 for “"Near-field cosmology"”.
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Tracer populations in the local group
… is of unknown origin. Altogether, I find that nearly 80% of the RR Lyraes are associated with substructures, consistent with the theory that galaxy halos are predominantly, or even entirely, made up from disrupted satellites. I also investigate the density distribution of RR Lyraes in the halo, …
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Chemical and kinematical evolution in nearby dwarf spheroidal galaxies
… and how can one characterize their role in cosmology and galactic evolution? These systems' intriguing properties, such as the omnipresence of old stellar populations, their gas deficiency, their high velocity dispersion and at dispersion profiles provide stringent tests of the paradigm of …