#  On the Migratory Behavior of Planetary Systems: Rebekah Dawson 

 



####  calendar\_today Date and Time 

 **April 25, 2013** 

 02:30PM - 03:30PM EDT 

 



 

You are invited to attend a thesis presentation by Astronomy PhD Candidate, Rebekah Dawson, entitled ***On the Migratory Behavior of Planetary Systems.***

Thursday, April 25, 2013

2:30 PM

Phillips Auditorium

Abstract: For centuries, an orderly view of planetary system architectures, inspired by the nearly circular and co-planar orbits of our solar system's planets, dominated the discourse on planetary systems. However, there is growing evidence that many planetary systems, including our own solar system, underwent a period of upheaval, during which giant planets "migrated" from where they formed to where we observe them today. Using evidence from the modern orbits of extra-solar planets and from debris disks, I investigate a question key to understanding how planetary systems evolve: is giant planet migration typically a smooth, disk-driven process or a violent process involving strong multi-body gravitational interactions? Along the way, I present new approaches for extracting planetary orbital information from radial velocity measurements and transit photometry. Based on the dynamics of extra-solar planets and our solar system's Kuiper belt, I make the case that both disk migration and planet-planet interactions likely play a role in setting the architectures of planetary systems.



 

 



 

 See also:- [ PhD Colloquium ](/filter_by/phd-colloquium)
 
 

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