Fig. 6
Color image of A1689 obtained by combining F475W, F775W, and F850LP HST/ACS images using a logarithmic scale, showing a 6.3′′× 4.2′′ region around 619(1c) and its extended emission. Circles have diameters of 0.60′′, close to the FWHM seeing measured in the MUSE data. Cyan isocontours display flux levels for Lyman-α emission, from 0.5 to 2 × 10-19 erg/s/cm2/pix2, with bins of 0.5 × 10-19 erg/s/cm2/pix2.
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