We report on new data , including four vacuum ultraviolet spectropolarimetric observations by the Wisconsin Ultraviolet Photo-Polarimeter Experiment ( ” WUPPE ” ) on the Astro-1 and Astro-2 shuttle missions , and 15 new visible-wavelength observations obtained by the HPOL CCD spectropolarimeter at the Pine Bluff Observatory of the University of Wisconsin .
This includes three HPOL observations made within 12 hours of each of the three Astro-2 WUPPE observations , giving essentially simultaneous observations extending from 1500 to 10500 \AA .
An analysis of these data yields estimates on the properties of wind ” clumps ” when they are detectable by the polarization of their scattered light .
We find that the clumps must be detected near the base of the wind , r / R _ { * } = 1.3 - 2.5 .
At this time the clump density is at least 10 ^ { 13 } \mbox { cm } ^ { -3 } , 20 times the mean wind , and the temperature is roughly 10,000 ^ { \circ } K , about 20 \% cooler than the mean wind .
The clumps leading to the largest observed polarization must have electron optical depth of 0.1 - 1 and an angular extent of 0.1 - 1 ster , and account for at most 2 \% of the wind mass loss .
The H and HeI emission lines from the wind are unpolarized , but their P Cygni absorption is enhanced by a factor of four in the scattered light .
We speculate on the possible relationship of the clumps detected polarimetrically to those seen as Discrete Absorption Components ( DACs ) and in interferometry .