Sökning: "The Milky Way galaxy"

Visar resultat 16 - 20 av 51 uppsatser innehållade orden The Milky Way galaxy.

1. 16. 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

3. 17. Towards a high resolution view of infrared line formation

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Martin Schmidt Montelius; [2021]
   Nyckelord :Spectroscopy; Near infrared; K giants; Galactic archeaology; Galactic chemical evolution; Abundances; Milky Way; Physics and Astronomy;

   Sammanfattning : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. LÄS MER

4. 18. The Milky Way and its Exoplanets

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Jesper Nielsen; [2021]
   Nyckelord :Planets and Satellites; Exoplanets; Occurrence Rates; Physics and Astronomy;

   Sammanfattning : The detections of over 4000 exoplanets as of today has shown that they exist in a wide range of different configurations, otherwise known as architectures. Recently, studies have been made trying to link the environment of host stars to the architectures of their planetary systems and have found that the architectures of planetary systems may not necessarily be uniform in the Milky Way. LÄS MER

5. 19. Modelling stellar streams around the Milky Way

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Hyerin Jang; [2021]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Stellar streams around the Milky Way (MW) have been observed by wide sky surveys, and studied to understand the mass distribution of the MW. This is because streams are formed by a disruption of a globular cluster or a dwarf galaxy under the influence of the gravitational field of the MW. LÄS MER

7. 20. Carbon Abundance in the Milky Way Galaxy

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Calum Kvernes Macpherson; [2021]
   Nyckelord :Carbon; Abundance; Milky Way; Chemical Evolution; Physics and Astronomy;

   Sammanfattning : Carbon is the fourth most abundant element after hydrogen, helium and oxygen. It is a product of stellar nucleosynthesis as well as it being an important bio signature for life; this makes the analysis of carbon very fundamental. LÄS MER