Evolution of the interstellar medium: wispy cirrus, clumpy molecular clouds, star formation, disruption

星际介质的演化：纤细的卷云、块状的分子云、恒星的形成、分裂

• 批准号: 6843-2008
• 负责人: Martin, Peter
• 金额: $ 5.01万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=420331
• 关键词: Evolution; interstellar; medium; wispy; cirrus

Study of the interstellar medium (ISM) is at the root of understanding how the stellar population and the metalicity has been built up in the disk of the Milky Way and similar systems. A closely related question is why is there still an ISM remaining in our Galaxy? This appears to be because star formation in molecular clouds is not very efficient, because of feedback processes from the stars that are born there (outflows, winds, ionization, radiation pressure, supernovae). Because of this feedback, the reservoir of the Galactic ecosystem, the ISM, is neither a single state nor static. Rather it is a both complex and dynamic consumable.

星际介质（ISM）的研究是理解银河系和类似系统中恒星种群和金属度是如何建立的基础。 一个密切相关的问题是，为什么我们的银河系中仍然存在ISM？ 这似乎是因为分子云中的星星形成不是很有效，因为来自那里出生的恒星的反馈过程（流出，风，电离，辐射压力，超新星）。 由于这种反馈，银河系生态系统的蓄水池，ISM，既不是一个单一的状态，也不是静态的。相反，它是一种复杂而动态的消费品。