October 10, 2023
Speaker: Kevin Schlaufman (Johns Hopkins University)
Contact Information: kschlaufman@jhu.edu
Title: The Dynamical Evolution of Exoplanet Systems Over Billions of Years
Abstract: Exoplanet systems are expected to evolve with time as they age. In most cases though, the dynamical evolution of exoplanet systems over billion-year timescales are hard to observe. I'll describe how Galactic kinematics can provide accurate and precise age inferences for exoplanet populations and highlight the impact of those age inferences on models of planet formation and evolution. In particular, I'll show at the population level that (1) plausibly mean-motion resonant multiple-planet systems are among the youngest exoplanet systems and (2) systems with an ultra-short-period (USP) planet are among the oldest exoplanet systems. The former observation implies that convergent disk-driven Type I migration often leaves newly formed planetary systems in mean-motion resonances. The latter observation suggests that USP planets tidally migrate from their locations at the end of the planet formation process to their observed locations over several billion years.
Visitor's room: 103A
Visit Schedule:
Wednesday (October 11, 2023):
9:00 a.m.: Yubo Su (103A)
9:30 a.m.: Josh Winn (125)
10:00 a.m.: Michael Strauss (113 Peyton)
10:30 a.m.: Coffee
11:00 a.m.: Akash Gupta (110)
11:30 a.m.:
12:00 p.m.: Wunch
12:30 p.m.: Wunch
1:00 p.m.: Ashley Chontos (here)
1:30 p.m.:
2:00 p.m.: Ankan Sur
2:30 p.m.: Caleb Lammers
3:00 p.m.: Grace Telford (103) [also available later, this time slot could be a break!]
3:30 p.m.: Yixian Chen
4:00 p.m.: Josh Winn's group meeting (Dome Room)
5:00 p.m.:
Dinner Sign-up - add your name here:
Wednesday (October 11, 2023) [Prefer vegetarian options]
Kevin Schlaufman
Faculty Host: Josh Winn
Postdoc Host: Yubo Su
Anja Andersen
Caleb Lammers
Darach Watson
Rob Tejada
STUDENTS HAVE PRIORITY.
PLEASE NO MORE THAN 8 PEOPLE (it is more difficult to properly interact with the speaker in larger groups).