2016ApJ...823...24W

We analyze archival data from Bailey and co-workers from the Magellan adaptive optics system and present the first 0.9 µm detection (z'=20.3±0.4 mag; Δz'=13.0±0.4 mag) of the 11 M_Jup circumbinary planet HD 106906AB b, as well as 1 and 3.8 µm detections of the debris disk around the binary. The disk has an east-west asymmetry in length and surface brightness, especially at 3.8 µm where the disk appears to be one-sided. The spectral energy distribution of b, when scaled to the K_ S_-band photometry, is consistent with 1800 K atmospheric models without significant dust reddening, unlike some young, very red, low-mass companions such as CT Cha B and 1RXS 1609 B. Therefore, the suggested circumplanetary disk of Kalas and co-workers might not contain much material, or might be closer to face-on. Finally, we suggest that the widest (a >= 100 AU) low mass ratio (M_p/M_* ≡ q <= 0.01) companions may have formed inside protoplanetary disks but were later scattered by binary/planet interactions. Such a scattering event may have occurred for HD 106906AB b with its central binary star, but definitive proof at this time is elusive.