Institute for Advanced Study/Princeton University Joint Astrophysics Colloquium

Seeking Clues to Explain the Diverse Architectures of Exoplanetary Systems

Over the past two decades ongoing surveys have detected thousands of new planetary systems around nearby stars. These systems include apparently single gas giant planets on short period orbits, closely packed systems of up to 5-6 “mini-Neptunes”, and solar-system-like architectures with either one small planet or no planets interior to 0.5 AU. Despite our success in cataloguing the diverse properties of these systems, we are still struggling to develop narratives that can explain their divergent evolutionary paths. In my talk I will describe two new promising avenues of investigation, including constraints on the compositions of short-period planets and statistical studies of the frequency of outer gas giant and stellar companions in these systems. Taken together, these observations provide important clues that can be used to determine whether or not the observed population of short period exoplanets formed in situ or migrated in from farther out in the disk.

Date & Time

November 15, 2016 | 11:00am – 12:00pm

Location

Bloomberg Hall Lecture Hall

Speakers

Heather Knutson

Affiliation

California Institute of Technology

Notes

Coffee and refreshments are available from 10:30 am in the Bloomberg Hall Commons Room.