What is the orbital period of a star?
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- What are streams and shells in galactic halos, and how do they form? How do accreted dwarf galaxies contribute to the halo stellar population and its orbits?
- How do stellar orbits provide clues about the formation and evolution of galactic bars and spiral arms? What are the orbits of stars in the vicinity of galactic spiral arms?
- What are the orbits of stars ejected from globular clusters? What are the orbits of stars in nuclear star clusters?
- What is dynamical friction? How can we use stellar orbits to measure stellar masses?
- Are there any observed correlations between the properties of stellar orbits and the occurrence of gamma-ray bursts? What are the orbits of stars in galaxies with fast radio bursts?
- What are the orbits of high-velocity stars in the Milky Way halo? Where do hypervelocity stars come from, and what are their escape trajectories?
- How do tidal interactions affect the structure and kinematics of dwarf galaxies? What are the orbits of stars in low surface brightness galaxies?
- How does the gravitational potential influence stellar orbits? What are exoplanets, and how do they orbit their stars?
- 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?
- How do the dynamics and stellar orbits in dwarf irregular galaxies differ from those in dwarf spheroidal galaxies? What are the orbits of stars in interacting dwarf galaxy pairs?
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