Adaptive Optics J Band Imaging Polarimetry Observations of the Circumbinary Disk around UY Aurigae

. We have obtained J band (1.2 µm) polarimetry observations of the circumbinary disk around UY Aurigae with the University of Hawaii 36 element adaptive optics instrument, Hokupa'a, at the 3.6 m CFHT. The deep (120 min), high resolution (0.15") polarization map reveals a centrosymmetric polarization signature from the light scattered off the circumbinary dust disk which is ~10 6 times fainter than the stars in the binary system. PLUCY deconvolution is shown to successfully remove the wings of the unpolarized stellar PSF which contaminates the polarization signal of the disk. The first measurements of the polarization (~1.5%) of the two individual stellar components of UY Aur are reported as well. 1.0 Introduction Near infrared observations of the circumstellar disks around T-tauri stars are difficult due to the close proximity of these disks to their bright central star(s). Consequently, only a handful of circumstellar disks around T-Tauri stars have been resolved in their scattere..