Sökning: "planet hosts"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden planet hosts.

  1. 1. Exploring the Diversity of Exoplanets

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Rebecka Svensson; [2021]
    Nyckelord :Exoplanets; Super-Earth; Sub-Neptune;

    Sammanfattning : The search for extrasolar planets had been ongoing for many years when Mayorand Queloz discovered 51 Pegasi b in 1995. It was a giant gas planet similar to Jupiter, but with a larger radius and of only half of Jupiter’s mass. Theso called Hot Jupiter was observed to orbit its host star 7 times closer thanMercury is orbiting the Sun. LÄS MER

  3. 2. High resolution imaging observations of exoplanet host stars

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Kaltrina Kajtazi; [2020]
    Nyckelord :Speckle imaging; Speckle interferometry; High resolution imaging; Short integration time; Binaries; Exoplant hosts; Stellar properties; WIYN; Gemini; Orbital period; Physical separation; Angular separation; magnitude difference; Physics and Astronomy;

    Sammanfattning : This is a thesis project, analysing data from high-resolution imaging observations, specifically speckle imaging, as a follow up study of exoplanet host stars observed with K2, the second operational phase of the space telescope Kepler. The project was accomplished at NASA Ames research center under the guidance of Rachel A. LÄS MER

  4. 3. A greener peace: Ensuring environmental sustainability in post-conflict Colombia

    Master-uppsats, Lunds universitet/Internationella miljöinstitutet

    Författare :Alejandro Valencia; [2019]
    Nyckelord :Deforestation; substitution of illicit crops; alternative development; environmental justice; glyphosate; Earth and Environmental Sciences;

    Sammanfattning : Despite its small size Colombia hosts 10% of the planet’s biodiversity, in the over 53% of its territory which is covered by different types of tropical and Andean forests. However, decades of war have had devastating effects on the country’s environment, which is threatened with deforestation for the clearing for agriculture areas, mostly for illegal crops; as well as on its population, which has seen forced displacement of an estimated 8. LÄS MER

  5. 4. Detailed analysis of the chemical composition of stars harboring Earth-like planets

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Lorena Acuña Aguirre; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Context. The planet-metallicity correlation for gaseous giants is widely accepted through spectroscopic studies. However, whether a similar correlation exists for terrestrial planets is a debated subject. LÄS MER

  7. 5. Can planet formation explain the observed differences in the chemical composition of binary stars?

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Rebecca Forsberg; [2017]
    Nyckelord :binary stars; planet formation; protoplanetary disc; Physics and Astronomy;

    Sammanfattning : A suggested explanation for the observed differences in chemical abundances in binary stars has been planet formation (e.g. Tucci Maia et al. 2014). LÄS MER