GRASIL-3D: an implementation of dust effects in the SEDS of simulated galaxies

DOMÍNGUEZ-TENREIRO, ROSA; RAGONE FIGUEROA, CINTHIA; GRANATO, GIAN LUIGI; BROOK, C. B.; STINSON, G.; SILVA, L.

Marsella

Congreso; International Meeting on Cosmology : semianalytic models (SAMs) and hydrodynamic simulations (HSs); 2014

Laboratoire d'Astrophysique de Marseille

We introduce a new model for the spectral energy distribution of galaxies, GRASIL -3 D , which includes a careful modelling of the dust component of the interstellar medium. GRASIL -3 D is an entirely new model based on the formalism of an existing and widely applied spectrophotomet- ric model, GRASIL , but specifically designed to be interfaced with galaxies with any arbitrarily given geometry, such as galaxies calculated by theoretical hydrodynamical galaxy formation codes. GRASIL -3 D is designed to separately treat radiative transfer in molecular clouds and in the diffuse cirrus component. The code has a general applicability to the outputs of simulated galaxies, either from Lagrangian or Eulerian hydrodynamic codes. As an application, the new model has been interfaced to the P - DEVA and GASOLINE smoothed particle hydrodynamic codes, and has been used to calculate the spectral energy distribution for a variety of simulated galax- ies from UV to sub-millimetre wavelengths, whose comparison with observational data gives encouraging results. In addition, GRASIL -3 D allows 2D images of such galaxies to be obtained, at several angles and in different bands.