The PAH emission bands as a diagnostic tool

PAH 发射谱带作为诊断工具

• 批准号: 341273-2010
• 负责人: Peeters, Els
• 金额: $ 2.99万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=527240
• 关键词: PAH; emission; bands; diagnostic; tool

Polycyclic Aromatic Hydrocarbons (PAHs) are the largest organic molecules in space playing a crucial role in various chemical and physical processes and also in the prebiotic evolution of life. Their infrared signature, the unidentified infrared (UIR) bands, dominates the appearance of almost all infrared observations. However, although the presence of PAHs in space is now generally accepted, specifics of the emitting population remain elusive. Similarly, although it is firmly established that the detailed characteristics of these UIR bands vary from source to source and spatially within objects, the origin of these variations is not understood.

多环芳烃（PAH）是太空中最大的有机分子，在各种化学和物理过程以及生命起源的进化中发挥着至关重要的作用。它们的红外特征，即未识别的红外（UIR）波段，主导了几乎所有红外观测的出现。然而，尽管现在人们普遍接受太空中存在多环芳烃，但排放群体的具体情况仍然难以捉摸。同样，尽管已经确定这些 UIR 波段的详细特征因源而异，并且在物体内的空间上也有所不同，但这些变化的根源尚不清楚。