Astro Seminar: Radial migration of stars in galactic disks
| Date/Time: | Friday, 10 Nov 2017 from 4:10 pm to 5:10 pm |
|---|---|
| Location: | Rm. 38, Physics Bldg. |
| Cost: | 0.0 |
| Contact: | Curt Struck |
| Phone: | 515-294-3666 |
| Channel: | College of Liberal Arts and Sciences |
| Actions: | Download iCal/vCal | Email Reminder |
Abstract: Stars orbiting the center of a spiral galaxy experience changes in orbital radius as well as in angular momentum due to the scattering by spiral waves. The changes are significant when the orbit of a star is near the corotation radius of the spiral pattern. Radial migration around the corotation resonance is associated with the capture of a star in a 'trapped' orbit. A criterion for determining whether or not a star is captured at corotation helps explain causes of scattering events and may shed light on the importance of radial migration to disc evolution.