Fig. 2
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SOAR (top), SAAO 2024 (middle), and SAAO 2014 (bottom) 1D spectra of HaTr 5. Emission lines are labeled on the SOAR and SAAO 2024 spectra. The left y-axis denotes flux, but surface brightness for the right y-axis. Note: the “artificial” extreme variations of the [O I] emission lines caused by poor sky subtraction for the SAAO 2024 spectrum and low S/N of the SAAO 2014 spectrum. The apparent [O I] emission lines in the SOAR spectrum are residuals of the sky subtraction as well.
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