Sökning: "Pristine survey"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Pristine survey.

  1. 1. Utvärdering av biotopvårdande åtgärder i Grimåsbäcken. En analys av fysikaliska egenskaper och sammansättning av makroevertebrater.

    Kandidat-uppsats, Göteborgs universitet / Instiutionen för biologi och miljövetenskap

    Författare :Björn Andermo; [2024-01-22]
    Nyckelord :Channelized streams; retention; biotope preservation; macroinvertebrates; bottom substrate; woody debris.;

    Sammanfattning : Many streams have been exposed to extensive anthropogenic impact for the benefit of forestry and agriculture. The effects has mainly been channelization characterized by lowered and straightened channels. This homogeneous morphology leads to decreased ability to retain water as well as lost connection to the floodplain. LÄS MER

  3. 2. The Metallicity Structure of the Milky Way Halo II : Characterising the distant halo substructure

    Master-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Amanda Byström; [2022]
    Nyckelord :Milky Way; Galactic archaeology; halo; photometric metallicities; stellar catalogue; Gaia-Enceladus-Sausage; Sagittarius; Pristine survey; metallicity; Gaia mission;

    Sammanfattning : The Milky Way galaxy, like all spiral galaxies, is surrounded by a roughly spherical distribution of stars called the halo. The halo was largely formed when the galaxy merged with smaller galaxies. LÄS MER

  4. 3. The Metallicity Structure of the Milky Way halo I : Creating a stellar catalogue of the distant halo’s red giants

    L3-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Amanda Byström; [2021]
    Nyckelord :Milky Way; Galactic archaeology; halo; photometric metallicities; stellar catalogue; giant stars; distance calculations; Pristine survey; Gaia mission; metallicity distribution;

    Sammanfattning : The Milky Way's halo is an approximately spherical distribution of stars surrounding the Galaxy that carries the history of the Milky Way. The outer halo is a Galactic region with long dynamical timescales largely built up by accreted material. LÄS MER

  5. 4. ÖSI och naturvården : hur hanterades naturvärden när staten kartlade småskogsbrukets skogar?

    Kandidat-uppsats, SLU/School for Forest Management

    Författare :Brita Asplund; [2019]
    Nyckelord :Översiktlig skogsinventering; Skogspolitik; Skogsvårdslagen;

    Sammanfattning : At the beginning of the 1970´s the Swedish forestry had developed into a highly mechanized and intensive operation. It received strong criticism for its methods and negative effects on the environment. LÄS MER

  7. 5. Conditions for detecting population III galaxies with next-generation telescopes

    Master-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Emma Fransson; [2019]
    Nyckelord :population III stars galaxies WFIRST;

    Sammanfattning : Through the spectral synthesis model YGGDRASIL, developed by E. Zackris- son et al. 2011, luminosities for the chemically pristine population III galaxies are retrieved and compared to the capabilities of the upcoming infrared telescopes, in particluar the Wide Field InfraRed Survey Telescope (WFIRST). LÄS MER