Do black holes regulate the growth of massive galaxies?

该项目将利用詹姆斯·克拉克麦克斯韦望远镜（JCMT）宇宙学遗产调查（S2 CLS）的数据，调查黑洞吸积与早期宇宙中大质量星系形成之间的联系。S2 CLS是JCMT遗留调查中最大的一次，提供了在亚毫米波段选择的数千个银河系外源的第一批样本，这是以前在这些波长的调查样本大小的数量级改进。亚毫米波段的大气窗口使我们能够获得来自高红移星系和活动星系核（AGN）的红移远红外辐射，从而精确定位早期宇宙中与大质量星系和黑洞聚集有关的强烈的星星形成活动。黑洞被认为在星系形成过程中扮演着关键角色，通过反馈过程（即来自吸积盘的强大风）调节恒星球体的生长。最近在这一领域的争议来自于研究结果相互矛盾。一项引人注目的研究声称，在吸积活动最高的活动星系核中没有观察到活跃的星星形成，但在光度较低的活动星系核中存在。相反，一项竞争性的研究发现恒星形成率与聚集活动无关。前者声称他们的结果是发光活动星系核抑制星星形成的证据，而后者得出的结论是不能做出这样的声明.一场正在进行的辩论！拟议的项目将使用S2 CLS数据集的独特特征来改进以前的研究，并回答标题中提出的问题。“黑洞会调节大质量星系的生长吗？”'

This project will exploit data from the James Clerk Maxwell Telescope (JCMT) Cosmology Legacy Survey (S2CLS)to investigate the link between accretion on to black holes and the formation of massive galaxies in the early Universe. The S2CLS is the largest of the JCMT Legacy Surveys and is providing the first samples of thousands of extragalacticsources selected in the submillimetre (submm) wavebands, an order-of-magnitude improvement in thesample sizes of previous surveys at these wavelengths. The submm atmospheric window allow us to access the redshifted far-infrared emissionfrom high-redshift galaxies and active galactic nuclei (AGN) thus pin-pointing intense star -formation activity in the early Universe associated with the assembly of massive galaxies and black holes. Black holes are thought to play a key role in the galaxy formation process by regulating the growth of the stellar spheroid via a feedback process, i.e. a powerful wind from the accretion disk. Recent controversy in this field has come from studies with conflicting results. One high profile study claims that vigorous star formation is not observed in AGN with the highest accretion activity but is present in lower luminosity AGN. In contrast, a competing study finds no dependence of star-formtion rate on acretion activity. The former claim their result is evidence that luminous AGN suppress star formation while the latter conclude that no such claim can be made...a debate that is ongoing! The proposed project will use the unique characteristics of the S2CLS dataset to improve on previous studies and answer the question posed in the title...'Do black holes regulate the growth of massive galaxies?'