Multigrain Dust Cloud Models of Starburst and Seyfert Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present improved, spherically symmetric, multigrain dust models for the far-infrared emission from starburst galaxies, based on an exact radiative transfer code. The parameters of the models are similar to those of the starburst model of Rowan-Robinson & Crawford, with a total optical depth at 1000 A of τ_UV_ = 200 (A_v_ = 40). We also extend these models to the class of ultraluminous compact starburst galaxies, and find that similar models with higher optical depths, up to τ_UV_ = 500, explain the far-infrared spectra of these galaxies. Spherically symmetric models are also presented for the infrared emission from Seyfert galaxies.

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