Extended Data Fig. 5: Illustration of generating the [O III]+Hβ map.
From: Extended enriched gas in a multi-galaxy merger at redshift 6.7
a) The F356W image after removing the foreground galaxies. b) The continuum model generated based on the best-fit SEDs of clumps, the Sèrsic profiles of clumps, and the F356W PSF. c) The [O III]+Hβ map derived by subtracting the continuum model from the foreground-removed F356W image. The green contour indicates surface brightnesses of \(8.8\times 1{0}^{-17}{\rm{erg}}\,{{\rm{s}}}^{-1}\,{{\rm{cm}}}^{-2}{{\rm{arcsec}}}^{-2}\), the same as Fig. 1.
