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Exoplanet Group Meeting - Christopher Lam

Artists rendering of two planets orbiting a distant star
October 20, 2025
12:30 pm - 1:30 pm
Hybrid: McPherson 4054 and Zoom

Title: Exoplanets in Galactic Space and Time

Speaker: Christopher Lam (Florida)

Abstract:

Our historical understanding of exoplanets has evolved as the number of discovered planets has grown, to fold in the role of the Galactic context. This has most often been done through metallicity or age; however, the advent of Gaia has ushered in a new angle to understand planetary system formation and evolution: Galactic kinematics. With the upcoming launches of Roman and PLATO on the horizon, access to exoplanets in neighborhoods much different from ours will require an updated framework for conducting demographics. In the first half of my talk, I will summarize the research I have done: 1) connecting transit multiplicity to stellar age and 2) connecting this relation to the vertical dispersion from the Milky Way mid-plane, Zmax. I will then discuss some research ideas relating exoplanet demographics to different axes of Galactic kinematics, including vertical action, the Antoja Phase Snail, and, time permitting, stellar obliquity vs Zmax.