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Fig. A.7

image

Fit to a SED in the grey shaded region shows the slope βUV for two different UCDs with different age, the same mass 107 M, and different metallicity. We can see that in the grey region the spectra have a smooth shape and therefore it is possible to fit this part by a linear function to obtain a good estimate of βUV. Section 3.4 gives more details.

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