Sökning: "stellar parameters"

Visar resultat 36 - 40 av 58 uppsatser innehållade orden stellar parameters.

1. 36. Understanding Bayesian stellar distance and stellar parameter estimation

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   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

3. 37. 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

4. 38. 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

5. 39. Searching for Exoplanets in K2 Data

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Iskra Georgieva; [2018]
   Nyckelord :exoplanets; transit method;

   Sammanfattning : The field of extrasolar planets is undoubtedly one of the most exciting and fast-moving in astronomy. Thanks to the Kepler Space Telescope, which has given us the Kepler and K2 missions, we now have thousands of planets to study and thousands more candidates waiting to be confirmed. LÄS MER

7. 40. Potassium in the Galactic thin and thick discs

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Carina Norregaard; [2018]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : To understand the evolution of our galaxy, the chemical abundance patterns and trends within the stars of the different regions are explored. The process of synthesizing these elements reveals key details about the way the stars and, therefore, the galaxy formed. LÄS MER