Fig. 7

image

From left to right: EW0 distributions for z ~ 3.6, 4.9, and 6.0 with a bin width of 60 Å (gray histograms). One (one) object at z ~ 3.6 (4.9) with EW0> 600 Å is placed at EW0= 600 Å for display purposes. The vertical dashed line indicates EW0= 240 Å (cf. Schaerer 2003; Raiter et al. 2010). The red dashed lines show the best-fit curves of the distributions expressed as N = N0 exp(EW0/w0), where w0 indicates the best-fit scale factor. The black dashed lines indicate the best-fit curves of the distributions expressed as N = N0 exp(EW02/2), where σg indicates the best-fit distribution width.

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