agree with @Magdis2012b, who did not find any evidence of a dependence of the main-sequence SED on stellar mass at fixed redshift. The mass distribution of star-forming galaxies does not vary significantly with redshift, except in normalization (@Ilbert2013 and Fig.\[fig:massdistr\]). The average stellar mass at all redshifts is between $10^{10.75}$M$_\odot$ and $10^{10.80}$M$_\odot$ (Fig.\[fig:massdistr\] and Table\[tab:physpar\]).\
Star-forming galaxies whose stellar mass is larger than our cut do not correspond to the same populations at z=4 and z=0. The massive objects at z=4 are formed in dense environments, corresponding to the progenitors of today’s clusters and massive groups [e.g., @Conroy2009; @Moster2010; @Behroozi2012a; @Bethermin2013; @Bethermin2014]. Most of these objects are in general quenched between z=4 and z=0 [e.g., @Peng2010]. In contrast, our mass cut at z=0 corresponds to Milky-Way-like galaxies. At all redshift, this cut is just below the mass corresponding to the maximal efficiency of star formation inside halos (defined here as the ratio between stellar mass and halo mass, @Moster2010 [@Behroozi2010; @Bethermin2012b; @Wang2013; @Moster2013]).\
Our stellar mass cut is slightly below the knee of the mass function of star-forming galaxies [@Ilbert2013]. The population we selected thus hosts the majority ($>$50%) of the stellar mass in star-forming galaxies. Since there is a 