The Importance of Merging and Changes Over Time in Luminous Quasars Selected by the Wide-field Infrared Survey Explorer Observatory

超大质量黑洞（BHs）在附近大质量星系的中心很常见，来自黑洞的吸积能量可能在星系属性随时间变化中起着重要作用。然而，关于活动星系核（AGN）的燃料和反馈机制的基本问题仍然存在。首先，尽管经过了几十年的研究，我们仍然不知道是否需要大规模的星系合并来为最明亮的AGN提供燃料。另一方面，我们还没有完全映射出AGN的聚类强度作为亮度、遮挡或选择方法的函数。pi将使用附近的AGN来研究它们的性质以及它们所在星系的性质。第二部分PIs建议将全天广域红外巡天天文台（WISE）巡天与XMM-Newton数据相结合，在200平方度的天空中选择约10,000个z1最明亮的活动星系核（AGN）。由于超级超级相机巡天（HSC）提供的深度和高分辨率成像，pi将提取前所未有的聚类属性，凸起分数和合并分数的限制，以了解AGN在星系属性随时间变化中的作用。PIs还提议加强hyperprime Camera暑期学校，为大规模调查时代的下一代研究人员做好准备。

Part 1Supermassive black holes (BHs) are common in the centers of nearby massive galaxies, and energy from accreting BHs likely plays an important role in changes of galaxy properties over time. Nevertheless, basic questions remain about the fueling and feedback mechanisms in Active Galactic Nuclei (AGN). For one, we still do not know whether major mergers of galaxies are required to fuel the most luminous AGN, despite decades of research. For another, we have not yet fully mapped the clustering strengths of AGN as a function of luminosity, obscuration, or selection method. The PIs will use nearby AGN to study their properties and the properties of the galaxies within which they reside.Part 2The PIs propose to combine the all-sky Wide-field Infrared Survey Explorer Observatory (WISE) survey with XMM-Newton data to select ~10,000 of the most luminous active galactic nuclei (AGN) with z1 over 200 square degrees of sky. Thanks to the deep and high-resolution imaging available from the HyperSuprime Camera Survey (HSC), the PIs will extract unprecedented constraints on the clustering properties, bulge fractions, and merger fractions, to understand the role that AGN play in changes of galaxy properties with time. The PIs also propose to strengthen their HyperSuprime Camera summer school, to prepare the next generation of researchers for the era of large surveys.