Spectroscopy of molecules relevant to astrophysics and the atmosphere

与天体物理学和大气相关的分子光谱学

• 批准号: 217020-2007
• 负责人: Tokaryk, Dennis
• 金额: $ 2.04万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=477862
• 关键词: Spectroscopy; molecules; relevant; astrophysics; atmosphere

Our knowledge of the molecular composition of astrophysical bodies - comets, stars, nebulae - and of the space between the stars comes exclusively from the light that molecules in these environment emit, and from the light that they absorb from background sources. This research program involves the study of these molecules in laboratories on Earth to determine their physical properties in great detail by recording the patterns of their emission and absorption of light using lasers and spectrometers. Some of these molecules are chemically stable, and we can study them directly. Others are very reactive, and therefore live only a short time once created in a terrestrial environment (although they can survive for a long time in space, since there is very little matter there with which to react). We make these molecules via electrical discharges and in specially prepared jets of gas. Since they form only in small quantitites, we have to devise careful means to probe them with high sensitivity.

我们对天体物理体（彗星、恒星、星云）以及恒星之间空间的分子组成的了解完全来自这些环境中的分子发出的光以及它们从背景源吸收的光。 该研究计划涉及在地球上的实验室中研究这些分子，通过使用激光和光谱仪记录它们的光发射和吸收模式，详细确定它们的物理特性。其中一些分子化学性质稳定，我们可以直接研究它们。 其他的反应性很强，因此一旦在陆地环境中产生，它们只能存活很短的时间（尽管它们可以在太空中生存很长时间，因为那里几乎没有可以反应的物质）。 我们通过放电和专门制备的气体喷射来制造这些分子。 由于它们仅以少量形成，因此我们必须设计仔细的方法以高灵敏度探测它们。