Search for dissertations about: "Galaxy: structure"
Showing result 1 - 5 of 34 swedish dissertations containing the words Galaxy: structure.
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1. The nature of kinematic structures in the Galactic disc
Abstract : The velocity distribution of stars in the Galactic disc is complex and consists of a vast number of kinematic structures, that is, stars that share similar velocity components. The reasons why some stars move together may be different and are related to dynamical processes connected to the Galaxy, both internal as well as external ones, such as resonances with the Galactic bar or the Galactic spiral arm structure, dissolution of open clusters, or merger events with other galaxies. READ MORE
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2. Galactic Structure Revealed by Space Astrometry
Abstract : This work demonstrates how the structure of our Galaxy, the Milky Way, can be unveiled with the use of space astrometry. It consists of two parts, of which the first is a brief introduction to the fields of Galactic structure, covering the Galaxy's stellar constituents, how the Galaxy was formed and how it has evolved over time, both chemically and kinematically. READ MORE
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3. Star-forming Dwarf Galaxies : Internal motions and evolution
Abstract : The study of dwarf galaxies is important in order to better understand the physics of the young universe and how larger galaxies form and evolve. In this work we focus on Blue Compact Galaxies (BCGs) which havemuch enhanced star formation (starbursts), causing blue colours and strong emission line spectra. READ MORE
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4. Physics-informed inferences of galaxy clustering with Bayesian forward modelling
Abstract : In this thesis, we showcase four novel approaches to constraining the relationship between cosmological observables and the large-scale structure. The majority of the energy content of the Universe in the concordance cosmological model remains largely unknown. READ MORE
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5. Probing the large-scale structure with galaxy clustering
Abstract : .... READ MORE