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Fig. 2.
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Redshift (z), luminosity at 3000 Å (L3000), black hole mass (M•), and Eddington ratio (αEdd) distributions for the non-BAL QSO (red,) and BAL QSO (green) samples selected from the Shen et al. (2011) catalogue. The vertical dashed and dotted lines indicate the median values for non-BAL QSO and BAL QSO, respectively.
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