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Author Potter, Daniel ♦ Close, Laird M. ♦ Roddier, Claude ♦ Graves, J. E. ♦ Northcott, Malcolm
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Circumbinary Disk ♦ Uy Aurigae ♦ T-tauri Star ♦ Circumstellar Disk ♦ Centrosymmetric Polarization Signature ♦ Unpolarized Stellar Psf ♦ First Measurement ♦ Uy Aur ♦ Binary System ♦ Bright Central Star ♦ Element Adaptive Optic Instrument ♦ Plucy Deconvolution ♦ High Resolution ♦ Polarization Map ♦ Polarimetry Observation ♦ Close Proximity ♦ Infrared Observation ♦ Individual Stellar Component ♦ Polarization Signal ♦ Circumbinary Dust Disk
Abstract . 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...
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study