Heating of the cool dust in spiral galaxies and the far-infrared/radio correlation
Heating of the cool dust in spiral galaxies and the far-infrared/radio correlation
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DOI：
10.1086/185885
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发表时间：
1990-12
期刊：
影响因子：
--
通讯作者：
Cong K. Xu
中科院分区：
文献类型：
--
作者：
Cong K. Xu
在 39 个正常螺旋样本中研究了非电离紫外线辐射对冷尘埃的加热。研究发现，紫外线加热对冷 FIR 光度的贡献平均可以占冷尘埃 40-120 微米波长范围内辐射的 76%。从这一发现和其他发现得出的结论是，正常螺旋盘内冷尘埃的加热主要是由于紫外线星际辐射场。结果意味着，如果宇宙射线粒子主要由超新星及其残余物加速的假设被接受，那么远红外和螺旋星系射电连续谱光度之间非常紧密和普遍的相关性就可以很容易地理解。 28 参考文献
The heating of cool dust by nonionizing UV radiation is studied in a sample of 39 normal spirals. It is found that the contribution of the UV heating to the cool FIR luminosity can on average account for 76 percent of the radiation in the wavelength range 40-120 micron from the cool dust. It is concluded from this and additional findings that the heating of the cool dust within the disks of normal spirals is mainly due to the UV interstellar radiation field. The results mean that the very tight and universal correlation between the FIR and the radio continuum luminosities of spiral galaxies can be easily understood if the hypothesis is accepted that cosmic-ray particles are predominantly accelerated by SNe and their remnants. 28 refs.