How do density wave theory and kinematic density waves explain the motion of stars in spiral arms? What are the orbits of stars in galactic rings?
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- How do molecular clouds influence the formation of stellar orbits? How do we model stellar orbits?
- How can we use the distribution of stellar ages and metallicities as a function of their orbits to study galactic evolution? What are the orbits of stars in the thin and thick disks of external spiral galaxies?
- How can we use the distribution of stellar orbits to reconstruct the merger history of the Milky Way? What are the orbits of stars in the galactic thick disk and how do they relate to the Milky Way's formation?
- What are globular clusters, and how do stellar orbits differ within them? How do interactions between stars in clusters affect their orbits?
- How does the removal of gas affect the long-term evolution of stellar orbits in disk galaxies? What are the orbits of stars in galaxies experiencing tidal dwarf galaxy formation?
- What is orbital decay due to gravitational waves? What is the Roche limit, and how does it relate to binary star orbits?
- How is angular momentum conserved in a stellar system? What are binary star systems?
- What are the orbits of globular clusters in the Milky Way halo? How do the orbits of globular clusters constrain the Milky Way's mass distribution?
- How do stellar orbits in merging galaxies evolve during and after the merger? What are tidal features like streams and shells made of, and how do their stellar orbits reflect the merger history?
- Could fast radio bursts potentially be used to probe the gravitational potential and stellar orbits in distant galaxies? What are the orbits of stars in galaxies with unusual dark matter distributions (e.g., cored vs. cusped halos)?
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