Linking galaxies with their dark matter halos

将星系与其暗物质晕联系起来

• 批准号: 341621-2007
• 负责人: Parker, Laura
• 金额: $ 1.53万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=399505
• 关键词: Linking; galaxies; their; dark; matter

We know that galaxies live in extended dark matter halos, but the size and shape of these halos are poorly constrained. Dark matter does not emit light which makes studying its properties particularly difficult. However, the amount and distribution of dark matter can be inferred by its gravitational influence using gravitational lensing. Linking observed galaxies to the halos in which they live can help us to constrain different aspects of galaxy formation, for example the efficiency of star formation.

我们知道星系生活在扩展的暗物质晕中，但这些晕的大小和形状受到很大的限制。暗物质不发光，这使得研究它的性质特别困难。然而，暗物质的数量和分布可以通过使用引力透镜的引力影响来推断。将观测到的星系与它们所处的晕联系起来，可以帮助我们限制星系形成的不同方面，例如星星形成的效率。