Envelope+disk masses, M_env+disk, as a function of the SED temperature for each source. The shaded grey area corresponds to the range of temperature for which the β values derived are authorised, which constrains the possible range of T_dust values. The range of (envelope + disk) masses derived over the temperature range for each source is indicated on the top side of the plots. For single systems, the bolometric temperature, T_bol, derived from Herschel (Furlan et al. 2016), is indicated by a blue dashed line and the radiative temperature, T_rad, by a red dashed area or by a red dashed line in the case of FIR2. Black arrows indicate that the derived values are lower limits.