Tracing large-scale structure growth with SCUBA-2

使用 SCUBA-2 追踪大规模结构增长

• 批准号: ST/N005848/1
• 负责人: Thomas Greve
• 金额: $ 0.19万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FN005848%2F1
• 关键词: Tracing; large; scale; structure; growth

SCUBA played a key role in establishing that powerful high-z radio galaxies (HzRGs) are amongst the most massive galaxies in the early Universe, pin-pointing rich proto-cluster environments. Theory predicts that the formation and evolution of galaxies occurs at an accelerated rate in such high-density regions compared to regions of lower density. Our project is part of a larger effort to map the large-scale environments of samples of HzRGs at z~1.5, 2.5, 3.5 and 4.5 with SCUBA-2 to in order to: 1) identify submillimetre-selected proto-cluster members (SMGs) via photometric redshifts, 2) measure the average overdensity of SMGs around HzRGs at these two epochs, 3) and contrast our findings with numerical simulations of structure growth.

SCUBA在建立强大的高z射电星系（HzRGs）是早期宇宙中最大的星系之一方面发挥了关键作用，精确地指出了丰富的原始星团环境。理论预测，与密度较低的区域相比，在这样高密度的区域，星系的形成和演化速度更快。我们的项目是使用SCUBA-2绘制z~1.5, 2.5, 3.5和4.5的HzRGs样本的大尺度环境图的一部分，以便：1)通过光度红移识别亚毫米选择的原簇成员（smg）， 2)测量这两个时期HzRGs周围smg的平均过密度，3)并将我们的发现与结构生长的数值模拟进行对比。