文章基本信息

标题：AGN Dusty Tori as a Clumpy Two-Phase Medium: the 10 μm Silicate Feature
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作者：Marko Stalevski ; Jacopo Fritz ; Maarten Baes 等
期刊名称：Open Astronomy
电子版ISSN：2543-6376
出版年度：2011
卷号：20
期号：3
页码：490-494
DOI：10.1515/astro-2017-0326
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：AbstractWe investigated the emission of active galactic nuclei dusty tori in the infrared domain, with a focus on the 10 μm silicate feature. We modeled the dusty torus as a clumpy two-phase medium with high-density clumps and a low-density medium filling the space between the clumps. We used a three-dimensional radiative transfer code to obtain spectral energy distributions and images of tori at different wavelengths. We calculated a grid of models for different parameters and analyzed the influence of these parameters on the shape of the mid-infrared emission. A corresponding set of clumps-only models and models with a smooth dust distribution is calculated for comparison. We found that the dust distribution, the optical depth and a random arrangement of clumps in the innermost region, all have an impact on the shape and strength of the silicate feature. The 10 μm silicate feature can be suppressed for some parameters, but models with smooth dust distribution are also able to produce a wide range of the silicate feature strength.
关键词：Keywordsgalaxies activenucleiSeyfert radiative transfer