Spatially Resolved Spectra of the Unidentified Infrared Features around HD 44179 (The Red Rectangle)
Spatially Resolved Spectra of the Unidentified Infrared Features around HD 44179 (The Red Rectangle)
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HD 44179（红色矩形）周围不明红外特征的空间分辨光谱
DOI：
10.1086/172673
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
P. Levan
中科院分区：
文献类型：
--
作者：
G. Sloan;G. Grasdalen;P. Levan
我们用长缝10 μm光谱仪观测了HD 44179及其周围的未识别红外辐射。通过应用最大熵重建方法对我们的图像，我们发现在光谱的空间变化不明显，在以前的工作与光束大小的几个弧秒直径。我们发现，没有UIR发射源的最里面的区域出现，相反，我们只观察到冷连续辐射。UIR辐射在距中心源0″.5处突然出现后，除距中心源1″.5处的11.3 μm特征强度增强外，UIR辐射随距离的增加而稳定衰减
We have observed HD 44179 and the surrounding unidentified infrared (UIR) emission with a long-slit 10 μm spectrometer. By applying maximum entropy reconstruction methods to our images, we have found spatial variations in the spectra not apparent in previous work with beam sizes of several arcseconds diameter. We find that no UIR emission arises in the innermost regions of the source; instead, we observe only cool continuum emission. After its abrupt appearance 0″.5 from the central source, the UIR emission decays steadily with distance, except for an enhancement in the intensity of the 11.3 μm feature ∼1″.5 away from the central source