Fig. 6.

Starburst excess, expressed as the difference sech minus total apparent magnitude (mSK − mTK) in function of their luminosity (sech absolute magnitude MSK). Most galaxies are spread between −0.5 and +0.5 mag suggesting good sech fits, while a few others have larger Gaussian components, suggesting more intensive star forming activity. The cross in the upper right shows typical uncertainties in the two parameters.
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