Sökning: "Gaia"

Visar resultat 1 - 5 av 32 uppsatser innehållade ordet Gaia.

  1. 1. Finding new atomic-diffusion stellar laboratories with Gaia and GALAH

    Kandidat-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Karl Zylinski; [2019]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  2. 2. Large Surveys and Data-Driven Investigations of Radial Migration

    Master-uppsats, Lunds universitet/Astronomi

    Författare :John Bradley Bowers; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : We probe the implications of 5 different previously developed models of the evolution of the Milky Way’s radial metallicity gradient for radial migration of stars observed today between 5kpc < R < 12kpc. Our sample contains 7167 giant stars, with metallicities and radial velocities obtained from APOGEE DR14, full 5-parameter kinematic information from Gaia DR2, and ages derived in Martig et al. LÄS MER

  3. 3. Probing the effect of dark matter velocity distributions on neutrino-based dark matter detection

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Högenergifysik

    Författare :Martin Ståhl; [2019]
    Nyckelord :Dark matter; WIMPs; velocity distribution; indirect detection;

    Sammanfattning : Dark matter has a long history, but it was not until modern times that we have a chance of detecting it. This thesis focuses on the velocity distribution and its effect on indirect WIMP detection. Recently a new velocity distribution, based on data from SDSS and GAIA, was proposed. LÄS MER

  4. 4. Interactive out-of-core rendering and filtering of one billion stars measured by the ESA Gaia mission

    Master-uppsats, Linköpings universitet/Medie- och InformationsteknikLinköpings universitet/Tekniska fakulteten

    Författare :Adam Alsegård; [2018]
    Nyckelord :out-of-core rendering; large-scale visualization; hierarchical octree; GPU streaming; realtime filtering.;

    Sammanfattning : The purpose of this thesis was to visualize the 1.7 billion stars released by the European Space Agency, as the second data release (DR2) of their Gaia mission, in the open source software OpenSpace with interactive framerates and also to be able to filter the data in real-time. LÄS MER

  5. 5. Re-examining the dynamics of the Milky Way with new distance estimates

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :John Wimarsson; [2018]
    Nyckelord :Milky Way dynamics; Gaia; distance estimates; Physics and Astronomy;

    Sammanfattning : The use of reliable distance estimates is key to derive accurate three-dimensional velocities of celestial objects. Systematic overestimation and large uncertainties in the distances will thus provide misleading information of an object's kinematics. LÄS MER