Sökning: "Galaxy"

Visar resultat 1 - 5 av 76 uppsatser innehållade ordet Galaxy.

  1. 1. Copper abundances of F and G dwarf stars in the Milky Way

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Filip Andersson; [2018]
    Nyckelord :Copper Abundance; Galaxy Formation; Dwarf Stars; Milky Way; Chemical Evolution; Physics and Astronomy;

    Sammanfattning : An investigation has been done in order increase the understanding of the origin and chemical evolution of copper in the Milky Way stellar disks. This is interesting to know as it plays a part of the Galaxy puzzle, so we become more able to map how and why galaxies look like they do. LÄS MER

  2. 2. The impact of turbulence on supernovae shockwaves

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Loke Lönnblad Ohlin; [2018]
    Nyckelord :astrophysics; astronomy; supernovae; shockwaves; interstellar medium; massive stars; turbulence; molecular clouds; Physics and Astronomy;

    Sammanfattning : The momentum and energy injection from supernovae is one of the main feedback modes, and is therefore key to the understanding of galaxy evolution and star formation. However, due to low resolution, large scale galaxy simulations often have issues with accurately modelling supernovae, and therefore rely on sub-grid models. LÄS MER

  3. 3. Nucleosynthesis in accretion disks around black holes

    Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik; Lunds universitet/Astronomi

    Författare :Neige Frankel; [2017]
    Nyckelord :accretion disk; Nucleosynthesis; black hole; high energy; white dwarf tidal disruption; Physics and Astronomy;

    Sammanfattning : Nucleosynthesis is the mechanism which produces new elements in nuclear reactions. Nuclear reaction rates are highly temperature dependant, and nuclear reactions take place in very hot environments. Current theories predict that the light elements such as hydrogen and helium were produced during the Big Bang. LÄS MER

  4. 4. The status of neutron-capture elements according to Gaia-ESO.

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Linnéa Strandell; [2017]
    Nyckelord :Neutron-capture elements; Gaia-ESO; Milky Way field stars; Physics and Astronomy;

    Sammanfattning : The aim of this thesis is to get a better understanding of the evolution of the Milky Way stellar disc by looking at the abundance ratios for neutron-capture elements in thin and thick disc stars. In this project the formation of our Galaxy’s thin and thick disc was studied by analysing 10 different neutron-capture elements in field stars measured by Gaia-ESO. LÄS MER

  5. 5. Feasibility of new Dark Matter search at ATLAS

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Partikelfysik

    Författare :Peter Stratmann; [2017]
    Nyckelord :Dark Matter; ATLAS; Trigger-Level Analysis; Calibration; Level 1; Mediator; Jets; Physics and Astronomy;

    Sammanfattning : This thesis examines the idea of calibrating Level 1 jets. These are used in the Trigger-Level Analysis at the ATLAS in the search for a new mediator, in this case between Standard Model and Dark Matter particles. In the thesis, the idea to calibrate the Level 1 jets is investigated. LÄS MER

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