<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees"^^ . "In this thesis we use cosmological merger trees and semi-analytic models of galaxy formation to provide the initial conditions for multi-merger hydrodynamic simulations. In this way we exploit the advantages of merger simulations (high resolution and detailed treatment of the gas physics) and semi-analytic models (cosmological background and low computational cost), and integrate them to create a novel tool. This approach allows us to study the evolution of various galaxy properties with an improved treatment of the gas components, including, for the first time, the hot gaseous halo from which gas cools and accretes onto the central disc. Using a suite of minor merger simulations we find that disc thickening is reduced relative to the collisionless case through the absorption of kinetic impact energy by the gas. In a following series of major merger simulations, we show that adding the hot gas component is a key ingredient in order to reproduce several observed properties of elliptical galaxies, like the abundance of fast rotators. Moreover, the presence of a gaseous halo reduces the starburst efficiency. We then focus on the effects of multiple concurrent mergers, which we found to be cosmologically more common than sequences of isolated binary mergers. For this, we investigate, whether accreted satellite stars can be distinguished kinematically from stars formed 'in situ' in the central galaxy, and find that this is only possible for a fraction of the disrupted satellites. Our simulations to date indicate that the combination of a detailed treatment of gas physics, high resolution, and a cosmological background, brings numerical simulations in better agreement with observations. Overall, the novel tool developed in this thesis will be very useful for pursuing a number of questions pertaining to the transformation of galaxy internal structure by mergers and accretion."^^ . "2010" . . . . . . . . "Benjamin Philipp"^^ . "Moster"^^ . "Benjamin Philipp Moster"^^ . . . . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (PDF)"^^ . . . "moster_phd_thesis.pdf"^^ . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Hydrodynamic Simulations of Cosmological Galaxy Merger Trees (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #11192 \n\nHydrodynamic Simulations of Cosmological Galaxy Merger Trees\n\n" . "text/html" . . . "520 Astronomie"@de . "520 Astronomy and allied sciences"@en . .