Sökning: "stellar parameters"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden stellar parameters.

  1. 1. How Stellar Tides Affect Planet Evolution

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Madison Green; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Planets that orbit their host star closely experience tidal forces due to the strength of gravity not being uniform all over the planet. This leads to effects such as tidal spin synchronization, tidal eccentricity damping and tidal semi-major axis damping. LÄS MER

  2. 2. Spectroscopy of the Globular Cluster M30

    Master-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Kilian Hikaru Scheutwinkel; [2019]
    Nyckelord :Spectroscopy; Globular Cluster; M30;

    Sammanfattning : Globular Clusters contain very old metal-poor stars in different evolutionary stages evolved from the same primordial cloud. Signatures of atomic in stellar interiors are studied in the metal-poor GC M30. Furthermore, traces of cluster internal pollution depleting alpha elements e.g. LÄS MER

  3. 3. Understanding Bayesian stellar distance and stellar parameter estimation

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Calin Jilavu; [2019]
    Nyckelord :physics; astronomy; bayesian; stellar parameters; galaxia; bdasp; Physics and Astronomy;

    Sammanfattning : The consensus in the field is that we have a pretty good understanding of the physics behind star formation and evolution. So far, the models that have been created characterize the different collections of stars in our Milky Way galaxy with decent accuracy, and they have allowed for humanity to obtain insights into how our universe evolved. LÄS MER

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

    Master-uppsats, Lunds universitet/Astronomi

    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

  5. 5. The Almighty Quasar — Destroyer of Worlds

    Kandidat-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Julia Ahlvind; [2019]
    Nyckelord :Astronomy; Habitability; Quasars; Active galactic nucleus; AGN;

    Sammanfattning : In the study of habitability of terrestrial exoplanets, both life-supporting conditions and the prevalence of transient life-threatening events need to be considered. One type of hazardous effect that has so far not received much attention is the thermal effect of a nearby active galactic nucleus (AGN), or in this particular case, the class of the AGN known as a quasar. LÄS MER