Observational Constraints on the Physical Properties of Interstellar Dust in the Post-Planck Era
Observational Constraints on the Physical Properties of Interstellar Dust in the Post-Planck Era
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DOI：
10.3847/1538-4357/abc8f1
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发表时间：
2020-08
期刊：
影响因子：
--
通讯作者：
B. Hensley;B. Draine
中科院分区：
文献类型：
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作者：
B. Hensley;B. Draine
我们提出了一个综合的天文观测约束波长依赖的消光，发射和偏振星际尘埃从紫外线到微波波长的弥漫银河视线。这些视线的代表性的固相丰度也来自。鉴于普朗克卫星提供的偏振尘埃发射的敏感的新观测，我们特别强调尘埃偏振，包括连续偏振消光，偏振的碳质和硅酸盐的光谱特征，尘埃发射的波长依赖的偏振部分，光学偏振消光和远红外偏振发射之间的连接。总之，这些构成了一套约束条件，应该由弥漫星际介质中的尘埃模型再现。
We present a synthesis of the astronomical observations constraining the wavelength-dependent extinction, emission, and polarization from interstellar dust from UV to microwave wavelengths on diffuse Galactic sight lines. Representative solid-phase abundances for those sight lines are also derived. Given the sensitive new observations of polarized dust emission provided by the Planck satellite, we place particular emphasis on dust polarimetry, including continuum polarized extinction, polarization in the carbonaceous and silicate spectroscopic features, the wavelength-dependent polarization fraction of the dust emission, and the connection between optical polarized extinction and far-infrared polarized emission. Together, these constitute a set of constraints that should be reproduced by models of dust in the diffuse interstellar medium.