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Astrophysics Luncheon Seminar

Eccentric Planets and Debris Disks Interactions
Presented by Virginie Faramaz
Jet Propulsion Laboratory, California Institute of Technology

Monday, August 27, 2018
12:00 noon in 169-336

Debris disks contain the solid remnants of planet formation that are in collisional cascade, and are proof that solid accretion has produced solids at least km-sized. It is thus not surprising that debris disks are sometimes accompanied by planets, which reveal themselves through their gravitational imprint on debris disks (sharp edges, apsidal alignment, warps). For planets that are currently beyond reach of detection of our instruments and facilities, that is, planets in mature systems and/or at large distance from their host star, studying their impact on debris disks is actually our only chance to characterize them. Yet, in the quest for other inhabited worlds, unraveling distant planetary components is of prime importance. Indeed, the chemical processes leading to the formation of life-precursors does not take place in a star's Habitable Zone, but beyond the ice line, and it is only through interactions between distant planets and debris disk components that icy bodies are allowed to permeate the Habitable Zone, reach terrestrial-like planets residing there, and deliver water and organics to them.

SVCP Astrophysics

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