"So far, Webb didn't manage to take a direct image of an exoplanet orbiting AU Mic, but past research(opens in new tab) uncovered "numerous fast moving clumps" in the debris disk that may have been produced by a yet unknown object, Lawson said in a news conference. While analysis of the disk is still ongoing, Lawson told reporters that the disk has a definitive blue color. This finding is consistent with previous studies and indicates that the disk is made of small dust grains, causing it to be brighter at shorter wavelengths."
AU Mic has been under study for some time now. Here are some past reports I read on the system.
Probing the innermost region of the AU~Microscopii debris disc,
https://arxiv.org/abs/2207.04116
NFANT “HOT NEPTUNE” PROVIDES CLUES TO ITS BIRTH,
https://skyandtelescope.org/astronomy-news/infant-hot-neptune-provides-clues-to-its-birth/
My observation. Some older reports indicate the dust mass in the debris disk around AU Mic star is about 10E-2 earth masses or 0.01 earth mass, very small here. The AU Microscopii Debris Disk: Multiwavelength Imaging and Modeling,
https://ui.adsabs.harvard.edu/abs/2007ApJ...670..536F/abstract, November 2007. ArXiv,
https://arxiv.org/pdf/0705.4196.pdf, 56 pages. "The masses in the inner and outer regions of the porous grain model are around 1.0 × 10^−2 M⊕ and 2.3 × 10^−4 M⊕, respectively."
Two exoplanets are reported at AU Mic. AU Mic b and c. Reported with nearly 12 and some 22 earth masses.
Detailed information about planet AU Mic b and its parameters.
exoplanet.eu
Detailed information about planet AU Mic c and its parameters.
exoplanet.eu