Fig. 1.
Portion of the SDSS spectrum of quasar J 1031+2240 (black) with detected H2 lines. The H2 template is shown in orange arbitrarily scaled and shifted above the observed spectrum for visual clarity. The pixels used here to calculate the Spearman’s correlation are highlighted by red dots. The blue label on the top of each Lyman (L) band indicates the vibrational level of the upper-state of that band.
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