Sökning: "Galaxy"

Visar resultat 16 - 20 av 178 uppsatser innehållade ordet Galaxy.

1. 16. Can Dwarf Galaxies Tell Us How the Milky Way Formed?

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

   Författare :Þóra Karlsdóttir; [2023]
   Nyckelord :Dwarf Galaxy; Milky Way; Physics and Astronomy;

   Sammanfattning : Dwarf galaxies are a key component in understanding the evolution of galaxies and provide tests on the standard cosmological $\Lambda$ Cold Dark Matter model. According to the formation hierarchy, dwarf galaxies are the pieces that create all galaxies. Our current understanding of dwarf galaxies faces discrepancies between theory and observations. LÄS MER

3. 17. Hyper-velocity stars from globular clusters hosting intermediate-mass black holes

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

   Författare :Matilda Skantz; [2023]
   Nyckelord :Hypervelocity stars; run-away stars; stellar binary; intermediate mass black hole; globular cluster; Hills mechanism; Physics and Astronomy;

   Sammanfattning : In 1988 Hills proposed that stars can gain velocities above 500 km s−1 if they are in a stellar binary which gets disrupted by a super massive black hole (SMBH). One of the stars would get trapped in an elliptical orbit around the SMBH while the other gets ejected and obtains a relatively high velocity. LÄS MER

4. 18. Investigating a possible dearth of stars with zero angular momentum in the solar neighbourhood.

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

   Författare :Aayush Desai; [2023]
   Nyckelord :Galaxy: disk; Galaxy: fundamental parameters; Galaxy: kinematics and dynamics; Galaxy: nucleus; solar neighborhood; stars: kinematics and dynamics; Physics and Astronomy;

   Sammanfattning : Background. Carlberg & Innanen (1987) first proposed the idea of measuring the solar re- flex velocity (the velocity of the Sun around the galactic centre), Vg,⊙, using the momenta of the stars in the solar neighbourhood. The proposal was a consequence of the work of L. LÄS MER

5. 19. Finding stars that are likely to be from accreted satellite galaxies

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

   Författare :Helena Cronstedt; [2023]
   Nyckelord :galaxy mergers; merger debris; velocity space; Physics and Astronomy;

   Sammanfattning : The Milky Way galaxy has through its lifetime merged with several smaller galaxies in its surroundings. Merger events like these play an important role in the formation of galaxies and are therefore of great interest to better our understanding of galaxy formation. LÄS MER

7. 20. “The Answer to the Great Question” : The Hitchhiker’s Guide to the Galaxy by Douglas Adams and Narrative Worldmaking 

   Master-uppsats, Karlstads universitet/Fakulteten för humaniora och samhällsvetenskap (from 2013)

   Författare :Marina Allbäck; [2022]
   Nyckelord :Science fiction; cognitive narratology; narrative worldmaking; components of the genre; time; space; characters; The Hitchhiker’s Guide; Douglas Adams;

   Sammanfattning : Abstract Cognitive narratology constitutes the study of mind-related aspects of storytelling embracing the nexus of narrative and mind. Theorists in the sphere of cognitive narratology believe that the mental capacities of the reader provide basis for narrative experience involving him or her in the process of co-creation of narrative worlds. LÄS MER