The inner workings of early-type galaxies: the relation between nuclear star clusters, cores, and supermassive black holes

早期型星系的内部运作：核星团、核心和超大质量黑洞之间的关系

• 批准号: 327261-2007
• 负责人: Ferrarese, Laura
• 金额: $ 1.57万
• 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: 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=397668
• 关键词: inner; workings; early; type; galaxies

Recent years have seen dramatic progress in the study of the core and nuclear properties of galaxies. The dynamical centers of galaxies have been found capable of hosting two seemingly disparate objects: supermassive black holes (SBHs) and compact nuclear star clusters (NSCs). In a drastic departure from previous beliefs, it has been discovered that both structures are common: galaxies lacking SBHs and/or NSCs are the exception, rather than the norm. Furthermore, the connection between SBHs and NSCs is deeper than one might have expected: both are linked to the global galactic properties by similar scaling relations; both contain the same fraction, ~0.3%, of the total galactic mass.

近年来，星系核心和核特性的研究取得了巨大进展。人们发现星系的动力中心能够容纳两个看似不同的物体：超大质量黑洞（SBH）和致密核星团（NSC）。与之前的信念大相径庭的是，人们发现这两种结构都是常见的：缺乏SBH和/或NSC的星系是例外，而不是常态。此外，SBH 和 NSC 之间的联系比人们想象的要更深：两者都通过类似的尺度关系与全球星系特性相关联；两者所占的比例相同，约占银河系总质量的 0.3%。