Fig. 1.

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Top-left: Spectroscopic β as a function of the absolute magnitude, MUV, for the entire sample (red points) in the redshift range between z = 4 and z = 14. The other three panels show the relation in redshift bins (z < 6.5, 6.5 < z < 8.5, z > 8.5). The best-fit linear relation for all the individual galaxies is shown with a solid orange line, while the best fit to the median points in bins of MUV (blue crosses) is indicated by a blue solid line. The dotted line shows the MUV = −18.5 limit. In the top-left corner of each panel, we highlight the slope of the best-fit relation.
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