Diagnosing a New Species of Dusty Debris: the Chameleon Debris Disk - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2020

Diagnosing a New Species of Dusty Debris: the Chameleon Debris Disk

Jessica Arnold
  • Fonction : Auteur
Anthony Boccaletti
John Henry Debes
  • Fonction : Auteur
Carol A. Grady
  • Fonction : Auteur
Adam F. Kowalski
  • Fonction : Auteur
Jamie R. Lomax
  • Fonction : Auteur
Elie Sezestre
  • Fonction : Auteur
Alycia J. Weinberger
  • Fonction : Auteur

Résumé

Two new, potentially causally correlated, observational phenomena have recently been discovered in spatially resolved imagery of debris disks: outward moving features traveling at super-Keplerian velocities and changes in the color of the AU Mic debris disk. To date, these are the only moving structures and the only observed color change seen in spatially resolved debris disks. We propose to use the only observational facility capable of yielding high fidelity optical coronagraphic spectroscopy of AU Mic's disk, HST/STIS, to obtain second epoch G750L and first epoch G430L spectroscopy. These data will enable us to: a) quantify color changes in the disk over a 2x greater time baseline (16 yrs) than previously achieved; b) determine whether the disk's color between 30-45 au continues to change as additional fast moving features pass by; c) better quantify the size of dust grains whose spatial distribution has changed; and d) confirm and better quantify whether small grains populate small (10-30 au) stellocentric distances. Derived grain size distributions will be linked to dynamical models proposed for the origin of fast moving features in this system.
Fichier non déposé

Dates et versions

hal-03039883 , version 1 (04-12-2020)

Identifiants

Citer

John P. Wisniewski, Jessica Arnold, Anthony Boccaletti, John Henry Debes, Carol A. Grady, et al.. Diagnosing a New Species of Dusty Debris: the Chameleon Debris Disk. 2020. ⟨hal-03039883⟩
6 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More