What are the different models for the distribution of dark matter in galaxies? How do stellar orbits in the outer halo constrain the Milky Way's mass?
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- What is the shape of a typical stellar orbit?
- What are moving groups of stars, and what do their similar orbits tell us about their origins? What are the orbits of stars in the local galactic neighborhood?
- Can stellar orbits be used to trace the origin and migration history of stars within galaxies? What is the concept of orbital diffusion, and how does it affect stellar orbits over long timescales?
- How do stellar orbits in galaxies with active galactic nuclei differ from those in quiescent galaxies? What are the orbits of stars in starburst galaxies?
- How do tidal forces during galaxy interactions affect the orbits of individual stars? What are the long-term effects of minor and major galaxy mergers on the distribution and kinematics of stellar orbits?
- What are microlensing events, and how do they help detect orbiting bodies?
- What are the orbits of white dwarf stars? What are the orbits of neutron stars?
- What is Kepler's Second Law of planetary motion, and how does it apply to stars? How do we observe stellar orbits?
- How do stellar orbits contribute to the overall shape and structure of galaxies? What are the orbits of stars in barred spiral galaxies?
- What is the role of triaxiality in the orbits of elliptical galaxies? What are box orbits and loop orbits in triaxial potentials?
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