Dust EMission - DustEM


DustEM is a numerical tool that computes the extinction, the emission, and the polarisation of interstellar dust grains heated by photons. It is written in fortran 95 and is jointly developed by Institut d'Astrophysique Spatiale (IAS) and Institut de Recherche en Astrophysique et Planétologie (IRAP). The dust emission is calculated in the optically thin limit (no radiative transfer) and the default spectral range is 0.04 and 105 μm. The code has been designed so that dust properties can easily be changed and mixed and to allow for the inclusion of new grain physics. Data for DustEM is generated by the IDL code DustProp which features methods to compute dust optical properties (e.g., Mie, T-matrix, DDA) and heat capacities (internal use only). A description and illustration of DustEM can be found in Compiègne et al. (2011). The DustEM Wrapper IDL tool uses DustEM to compute fluxes in a wide range of instrumental bands and to fit dust parameters. DustEM is coupled to the Meudon PDR code where it handles dust physics. DustEM is also coupled to the continuum radiative transfer codes CRT of the University of Helsinki as described and SKIRT of the University of Ghent.