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  Time Domain Coronagraphy: Diagnosing the Stripping of AU Mic's Debris Disk

Wisniewski, J. P., Augereau, J.-C., Boccaletti, A., Debes, J. H., Grady, C. A., Henning, T. K., et al. (2019). Time Domain Coronagraphy: Diagnosing the Stripping of AU Mic's Debris Disk.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D210-B Version Permalink: https://hdl.handle.net/21.11116/0000-0005-D211-A
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https://ui.adsabs.harvard.edu/abs/2019hst..prop15907W (Any fulltext)
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 Creators:
Wisniewski, John P.1, Author
Augereau, Jean-Charles1, Author
Boccaletti, Anthony1, Author
Debes, John Henry1, Author
Grady, Carol A.1, Author
Henning, Thomas K.1, Author
Hines, Dean C.1, Author
Schneider, Glenn1, Author
Sezestre, Elie1, Author
Stark, Christopher C.1, Author
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1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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 Abstract: Boccaletti+ (2015) discovered features moving within the AU Mic debris disk at super-Keplerian tangential velocities in spatially resolved imagery of the AU Mic debris disk. To date, these are the only moving structures seen in spatially resolved imagery of debris disks. The surface brightness, number, morphology, and velocities of these moving features constrains their physical location and mass, and thus are critical quantities needed to constrain the origin of this phenomenon. We propose 7 orbits of HST/STIS time per cycle, for cycles 27,28,29, to determine: a) What is the surface brightness of all features, and how does the surface brightness and morphology of features change over time?; b) What is the detailed vertical motion of features, and does the amplitude of this motion depend on stellocentric separation?; and c) What is the motion of the newly found features (NW-gamma and NW-delta) on the NW-side of the disk? These data will be used to test hypotheses that predict features are caused by the stellar wind expelling grains originating from a parent body that orbits at 8+/-2 au (Sezestre+ 2017) or by interaction between the star's wind and repeated dust avalanche events (Chiang & Fung 2017).

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 Dates: 2019
 Publication Status: Issued
 Pages: 15907
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Title: HST Proposal
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