Fig. 3.

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MRS spectra of Paα (left plot) and Hα (right plot) emission lines for E (upper panel) and W (bottom panel) galaxies of SPT0311-58. Black lines: MRS extracted spectra. Red filled area: wavelength integration range used to determine the Paα line flux. Red dotted lines: wavelength integration range used to determine the flux in Paα line translated to the Hα spectral range. Dotted black line: central wavelength of Paα line and expected central wavelength of Hα line determined from Paα. Gray area: the ±1σ calculated as the standard deviation form nine different background spectra.
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