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AR 14572 (Archival Research)

Sun Jul 14 10:37:34 GMT 2024

Principal Investigator: Wladimir Lyra
PI Institution: New Mexico State University
Investigators (xml)

Title: Photoelectric instability and debris disk rings: One theory to rule them all
Cycle: 24

Abstract
HST images of circumstellar debris disks have helped advance tremendously our understanding of these disks, thought to represent planetary systems during the late stages of planet formation as the gas clears and the system becomes optically thin. These systems are analogs of the Kuiper belt in the solar system, and show a variety of non-trivial structures attributed to planetary perturbations and utilized to constrain the properties of the planets. However, analyses of these systems have largely ignored the fact that, increasingly, debris disks are found to contain small quantities of gas. We have recently shown that dust-gas interactions with photoelectric heating can produce some of the key patterns seen in debris disks that were previously attributed to planets. We propose to code software and run a suite of models to develop the theory of photoelectric instability in gas-rich optically thin disks in light of the observational constrains set by HST observations and its interaction with other dynamically important processes such as hydromagnetic turbulence, radiation forces, planetary perturbers, and stellar flares.