SED fitting for the mass and dust temperature derivation of the cores with associated maser emission. A model consisting of a warm and a cold component (solid line) is fit when the 24 and 70 μm points are available. Otherwise, the data are fit with a single gray-body model. The two dotted lines present the two components separately. The IRAC 3.6–8 μm points – likely originating from a third, hot and inner component – were not used in the fitting.