Sökning: "Population Evolution"

Visar resultat 1 - 5 av 157 uppsatser innehållade orden Population Evolution.

  1. 1. The visibility of stellar transients in the Galactic Centre

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

    Författare :Jonathan Ström; [2024]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : A semi-analytical simulation was developed to evaluate the K-band magnitudes of Red Giants [0.96 - 1.02 M⊙] orbiting the supermassive black hole in the galactic centre. The model assumed star formation between 10-12 Gyrs ago and by following the IMF and applying a random age condition, a stellar population was created. LÄS MER

  3. 2. Tau-Leaping Implementations outside of chemistry

    Kandidat-uppsats, Lunds universitet/Statistiska institutionen

    Författare :Lotta Kornö; [2024]
    Nyckelord :Tau leaping; Mathematics and Statistics;

    Sammanfattning : Tau-leaping is an algorithm for model simulations most often used in kinetic chemistry. It was created to make simulations more efficient at the cost of some accuracy. However, its uses outside of chemistry are limited but could help make some model simulations more efficient. LÄS MER

  4. 3. Stokastiska modeller för evolution: En studie av fixeringsannolikhet i cancermodeller

    Kandidat-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Ida Berg; Elin Edgren; Jonathan Kedner; Sofia Larsson; Johanna Lundström; Matilda Selvaraj Tivesten; [2023-11-28]
    Nyckelord :;

    Sammanfattning : Cancer är en välkänd och förödande sjukdom som drabbar många personer varje år. Denna sjukdom är svårbehandlad då cancerbehandling främjar evolution av resistens hos cancercellerna, vilket leder till allt mer svårbehandlad cancer. LÄS MER

  5. 4. What limits the luminosity of red supergiants?

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

    Författare :Eric Svensson; [2023]
    Nyckelord :Stellar evolution; Red supergiants; Red giants; Luminosity; Binary stars; Binary star systems; Binary star interactions; Binary stellar evolution; Humphreys-Davidson limit; Upper luminosity limit; BSE; Population synthesis; Simulations; M31; LMC; SMC; Metallicity; Mass transfer; Merging; Physics and Astronomy;

    Sammanfattning : The observed upper limit of the luminosity of red supergiants, often called the Humphreys-Davidson limit, has recently been shown to be independent of metallicity and to not be explainable by single star evolution – findings that both contradict established ideas of the origins of the limit. It is now known that the vast majority of stars with sufficient mass to possibly evolve into red supergiants above the limit interact with companion stars at some point during their lives. LÄS MER

  7. 5. Resolving the smallest scale of star formation at Cosmic Noon with JWST : Star-forming clumps in a galaxy lensed by Abell 2744

    Master-uppsats, Stockholms universitet/Institutionen för astronomi

    Författare :Annalena Pless; [2023]
    Nyckelord :star formation; star-forming clumps; galaxy evolution;

    Sammanfattning : At higher redshift galaxies exhibit increasingly irregular and clumpy morphologies, withstar-forming clumps dominating the FUV output of their host galaxies thus being inti-mately related to star formation and the formation and evolution of galaxies. This workexamines star-forming clumps in a remarkable, young spiral galaxy at Cosmic Noon witha redshift ofz= 2. LÄS MER