The structure, formation and evolution of galaxies in the local universe

本地宇宙中星系的结构、形成和演化

• 批准号: 327251-2009
• 负责人: Cote, Patrick
• 金额: $ 1.82万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571963
• 关键词: structure; formation; evolution; galaxies; local

While cosmological models of structure formation now show excellent agreement with observations on the largest spatial scales, there remain serious discrepancies on the scales of galaxies and smaller. Unfortunately, a detailed understanding of the mechanisms by which galaxies were assembled into their present state ultimately hinges on astrophysical processes that are still poorly understood: i.e., gas cooling, star formation, and feedback from stars and active galactic nuclei. The best way to understand how these processes unfolded over cosmic time scales is to carry out detailed studies of galaxies in the local universe. This proposal aims to build on such ongoing surveys, focusing on galaxies in the two nearest rich clusters (i.e., Virgo and Fornax), and in the halo of the Milky Way. Observations from a wide array of ground- and space-based facilities (i.e., from HST, CFHT, Keck, MMT, Magellan, Spitzer, KPNO, CTIO and Palomar) taken expressly for this purpose will be used to explore the formation of galactic nuclei and their connection to super-massive black holes, the nature and origin of galaxy scaling relations, and the connections to the smallest and faintest galaxies currently known: those in the outer halo of the Milky Way.

尽管结构形成的宇宙学模型与对最大空间尺度的观察表现出了极好的一致性，但在星系的尺度上仍然存在严重的差异。不幸的是，对星系被组装到其目前状态的机制的详细理解最终取决于仍然知之甚少的天体物理过程：即气体冷却，恒星形成以及来自恒星和活跃的银河系核的反馈。 了解这些过程如何在宇宙时间尺度上展开的最佳方法是对当地宇宙中的星系进行详细研究。该提议旨在以这种正在进行的调查为基础，重点是两个最近的富群集（即处女座和福纳克斯）的星系，以及银河系的光环。 Observations from a wide array of ground- and space-based facilities (i.e., from HST, CFHT, Keck, MMT, Magellan, Spitzer, KPNO, CTIO and Palomar) taken expressly for this purpose will be used to explore the formation of galactic nuclei and their connection to super-massive black holes, the nature and origin of galaxy scaling relations, and the connections to the smallest and faintest galaxies目前已知：银河系外光环的人。