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

广域红外巡天探索者天文台选择的发光类星体合并和随时间变化的重要性

• 批准号: 1613744
• 负责人: Jenny Greene
• 金额: $ 32.58万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1613744&HistoricalAwards=false
• 关键词: Importance; Merging; Changes; Over; Time

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.

第一部分超大质量黑洞（BH）在邻近大质量星系的中心很常见，吸积黑洞产生的能量可能在星系性质随时间的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，我们仍然不知道星系的大合并是否需要为最明亮的AGN提供燃料。另一方面，我们还没有完全映射活动星系核的成团强度作为光度、遮蔽或选择方法的函数。PI将使用附近的活动星系核来研究它们的性质以及它们所在星系的性质。Part 2 PI建议将全天空宽视场红外巡天探测器天文台（WISE）的巡天与XMM-牛顿数据相结合，选择~ 10，000个z1超过200平方度天空的最明亮的活动星系核（AGN）。得益于超超级相机巡天（HSC）提供的深度和高分辨率成像，PI将提取对聚类特性、凸起分数和合并分数的前所未有的约束，以了解AGN在星系特性随时间变化中所起的作用。PI还建议加强他们的HyperSuprime Camera暑期学校，为下一代研究人员做好准备，迎接大型调查的时代。