The Spectral Energy Distribution in massive young stellar objects
M.Tapia, D.Elia, S.Molinari, M.Roth
Combining NIR observation taken at sub-arcsec resolution with the BAADE unit of the Magellan telescope (Las Campanas, Chile) with the SPITZER/IRAC data and Herschel HI-GAL observations from 70 to 500 micron, we have derived the spectral energy distributions (SEDs) of a sample of IRAS massive protostars from southern hemishere detected at 1.2 mm. The SEDs are compared with the transfer code model developed by Robitaille et al. (2007) including star+envelope+disk. From the best fits to the spectral points, we have determined the physical parameters of the different protostellar objects.