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Séminaire du Jeudi 5 juillet 2018

Eccentric Planets & Debris Disks Interactions

Virginie Faramaz (Jet Propulsion Laboratory)
Thursday July 5th - 11am
IPAG Seminar Room - IPAG

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, it is only through interactions between distant planets and debris disks component that icy bodies are allowed to permeate the Habitable Zone, reach terrestrial-like planets residing there, and deliver with water and organics to them. I will focus here on planets on eccentric orbits, show how their interactions with debris disks theoretically facilitates the transport of icy bodies within the habitable zone of planetary systems, and present as well new ALMA observations of two debris disks around which planets on eccentric orbits have been previously inferred.

Sous la tutelle de:


Sous la tutelle de:

CNRS Université Grenoble Alpes