X-raying the AU Microscopii debris disk

Abstract

AU Mic is a young, nearby X-ray active M-dwarf with an edge-on debris disk. Debris disk are the successors of the gaseous disks usually surrounding pre-main sequence stars which form after the first few Myrs of their host stars' lifetime, when - presumably - also the planet formation takes place. Since X-ray transmission spectroscopy is sensitive to the chemical composition of the absorber, features in the stellar spectrum of AU Mic caused by its debris disk can in principle be detected. The upper limits we derive from our high resolution Chandra LETGS X-ray spectroscopy are on the same order as those from UV absorption measurements, consistent with the idea that AU Mic's debris disk possesses an inner hole with only a very low density of sub-micron sized grains or gas.

11 pages, 10 figures, accepted for publication in A&A

References in corpus (9)

• The chemical composition of the Sun
• The Carbon-Rich Gas in the Beta Pictoris Circumstellar Disk
• Spitzer/MIPS Observations of Stars in the Beta Pictoris Moving Group
• The AU Microscopii Debris Disk: Multiwavelength Imaging and Modeling
• From discs to planetesimals I: evolution of gas and dust discs
• Chandra and Far Ultraviolet Spectroscopic Explorer Observations of z~0 Warm-Hot Gas Toward PKS 2155-304
• A Search for Planets Transiting the M Dwarf Debris Disk Host, AU Microscopii
• Capella Corona Revisited: A Combined View from \textit{XMM-Newton} RGS, \textit{Chandra} HETGS, and LETGS
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Cited by in corpus (12)

• Computing Intrinsic Lyman-alpha Fluxes of F5 V to M5 V Stars
• Constraints on Planetesimal Collision Models in Debris Disks
• Collisional modelling of the AU Microscopii debris disc
• Constraining a Model of Turbulent Coronal Heating for AU Microscopii with X-Ray, Radio, and Millimeter Observations
• X-ray to NIR emission from AA Tauri during the dim state - Occultation of the inner disk and gas-to-dust ratio of the absorber
• X-ray extinction from interstellar dust: Prospects of observing carbon, sulfur and other trace elements
• The Variable Detection of Atmospheric Escape around the young, Hot Neptune AU Mic b
• Probing the innermost region of the AU~Microscopii debris disk
• Interstellar absorption and dust scattering
• The Mysterious Affair of the H${}_2$ in AU Mic
• TYC 8241 2652 1 and the case of the disappearing disk: no smoking gun yet
• Nearby Young Stars and Young Moving Groups