Fig. 5
Correlation between the stellar activity index (
) and EUV flux for F-, G-, K-type stars (left; black dots) and M-type stars (right; open blue squares). The RMS on
log (EUV∕Fbol) after the fitfor F-, G-, and K-type stars and for M-type stars is 0.40 and 0.48, respectively. The stars removed as a result of the sigma clipping (see text) are indicated by the asterisks. The grey areas indicate the uncertainties on the fits.
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