HUBBLE-SPACE-TELESCOPE WFPC2 IMAGING OF FS TAURI AND HARO 6-5B

We have observed the field of FS Tauri (Haro 6-5) with the Wide Field Planetary Camera 2 on the Hubble Space Telescope. Centered on Hare 6-5 B and adjacent to the nebulous binary system of FS Tauri A there is an extended complex of reflection nebulosity that includes a diffuse, ho urglass-shaped structure. H6-5B, the source of a bipolar jet, is not d irectly visible but appears to illuminate a compact, bipolar nebula wh ich we assume to be a protostellar disk similar to HH 30. The bipolar jet appears twisted, which explains the unusually broad width measured in ground-based images. We present the first resolved photometry of t he FS Tau A components at visual wavelengths. The fluxes of the fainte r, eastern component are well matched by a 3360 K blackbody with an ex tinction of A(v) = 8. For the western star, however, any reasonable, r eddened blackbody energy distribution underestimates the K-band photom etry by over 2 mag. This may indicate errors in the infrared photometr y or errors in our visible measurements due to bright reflection nebul osity very close to the star. The binary was separated by 0.'' 239 +/- 0.'' 005 at a position angle of 84 degrees + 1.degrees 5 on 1996 Janu ary 25. There is no nebulosity around FS Tau A at the orientation sugg ested for a disk based on previous, ground-based polarization measurem ents.