UH AO image: HL Tauri

Explanation of image.

Telescope:	Canada-France-Hawaii, f/36
Date:	October 24, 1996 (UT)
Instrument:	University of Hawaii 13-channel AO system and 1024x1024 IR camera
Wavelength:	composite of J (blue) and H (green), and K'(red)
Total exposure:	20 min
Scale:	12 arcsec wide
Orientation:	North up East to Left
Observers:	L.M. Close, A. Dutrey, F. Roddier, C. Roddier, E. Graves, M. Northcott
Reference:	L.M. Close, et al. 1998, ApJ 499, June 1

This is a 3 color image of the young T Tauri Binary UY Aur. Note the blue (a 1.2 um image from UHAO) green (1.6 um AO image) and red (2.1 um UHAO image). The disk size is 450 AU. It is thought that as these disks condence they form planetary systems, hence it is important to image these disks at high resolution. The resolution in this 12x12" image is 0.15" FWHM (20 AU). For more information about our UY Aur paper see Close et al. 1998, ApJ, 499, June 1