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Figure 4. Illustration of the evidence for extended Lyman
alpha emission
for, from top to bottom, S1, S2, S3. Each panel shows the same 2
arcsec by 2 arcsec region as Figure 3, here smoothed by a 0.15 by 0.15
arcsec boxcar filter to enhance faint features. The left column shows
the summed image from all three filters. The middle column shows the
M-band images with the computed contribution of the continuum
subtracted. This image, then, contains only the Lyman alpha line
component. In the right column we show how the Lyman alpha-only image
would have appeared if the Lyman alpha profile were identical to the
continuum profile.
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