Fig. 2.
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K-correction approximation obtained as −2.5 × log(1 + z) (black line), compared to full K-corrections obtained using SNooPy (blue dots). The inverse of the S/N of the spectrum considered to calculate full K-corrections is presented as associated error bars. The vertical dashed gray line indicates z = 0.17, at which we switch from g to r band to calculate the correction.
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