Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-06-29
Mon.Not.Roy.Astron.Soc.Lett. 371 (2006) L70-L73
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures, accepted for publication as a MNRAS Letter
Scientific paper
10.1111/j.1745-3933.2006.00210.x
A model for the infrared emission of the high redshift ultraluminous infrared galaxy FSC 10214+4724 is presented. The model assumes three components of emission: a dusty torus viewed edge-on, clouds that are associated with the narrow-line region and a highly obscured starburst. It is demonstrated that the presence of clouds in the narrow-line region, with a covering factor of 17%, can explain why the mid-infrared spectrum of FSC 10214+4724 shows a silicate feature in emission despite the fact that its torus is viewed edge-on. It is also shown that the same model, but with the torus viewed face-on, predicts a spectrum with silicate emission features that is characteristic of the spectra of quasars recently observed with Spitzer.
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