Crystalline Silicates
Crystalline Silicates
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结晶硅酸盐
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. Kemper
中科院分区：
文献类型：
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作者：
F. Molster;C. Kemper
红外空间天文台（ISO）的一个大惊喜是在太阳系外发现了结晶硅酸盐。以前人们普遍认为，太空中所有的宇宙硅酸盐都是无定形结构。多亏了ISO，我们现在知道结晶硅酸盐在银河系中无处不在（除了弥漫的ISM），有时甚至数量非常大（> 50%的小尘埃颗粒）。结晶硅酸盐的演化仍然没有完全澄清，但理论建模和观察的结合已经揭示了它们的生命周期。结晶硅酸盐在弥漫ISM的情况下，为我们提供了有关ISM中的尘埃非晶化率的信息。
One of the big surprises of the Infrared Space Observatory (ISO) has been discovery of crystalline silicates outside our own Solar system. It was generally assumed before that all cosmic silicates in space were of amorphous structure. Thanks to ISO we know now that crystalline silicates are ubiquitous in the Galaxy (except for the diffuse ISM) and sometimes even in very large quantities (> 50% of the small dust particles). The evolution of the crystalline silicates is still not completely clarified, but the combination of theoretical modeling and observations have already shed light on their life-cycle. The absence of crystalline silicates in the diffuse ISM provides us with information about the dust amorphization rate in the ISM.