  We present stellar mass measurements for a sample of 36 Luminous Compact Blue
Galaxies (LCBGs) at redshifts z = 0.4-1.2 in the Flanking Fields around the
Hubble Deep Field North. The technique is based on fitting a two-component
galaxy population model to multi-broadband photometry. Best-fit models are
found to be largely independent on the assumed values for the IMF and the
metallicity of the stellar populations, but are sensitive to the amount of
extinction and the extinction law adopted. On average, the best-fit model
corresponds to a LMC extinction law with E(B-V)=0.5. Stellar mass estimates,
however, are remarkably independent on the final model choice. Using a Salpeter
IMF, the derived median stellar mass for this sample is 5 x 10^9 Mo, i.e., ~2
times smaller than previous virial mass estimates. Despite uncertainties of a
factor 2-3, our results strengthen prior claims that L* CBGs at intermediate
redshifts are, on average, about 10 times less massive than a typical L* galaxy
today.
