Dusty Star-Forming Galaxies Across Cosmic Time

宇宙时间中的尘埃恒星形成星系

• 批准号: 2614393
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2614393
• 关键词: Dusty; Star; Forming; Galaxies; Across

The role of dusty star forming galaxies (DSFGs) in the overall picture of galaxy evolution is currently unclear. They are suspect to have roles as the progenitors of the most massive galaxies in galaxy clusters and as the precursors of quasars but we still lack a clear observational picture of these processes within the overall history of galaxy evolution. This PhD project will address several open questions in this broad area including: a comparison of local and high redshift DSFGs using the AKARI FIS all sky survey recalibrated using PACS data to allow comparison to IRAS fluxes; an investigation of candidate DSFG galaxy protoclusters using optical and NIR data to search for non-dusty cluster members. This will use both existing data, such as the SHARKS survey, and new observations obtained for the candidate prototclusters; a study of the nature of extreme starburst galaxies which, if confirmed, would be the most luminous objects known. This will use new data from Subaru, Keck and other ground based optical and mm/sub telescopes; the search for very high redshift DSFGs using SPIRE undetected submm sources using high resolution SMA images to provide optical/NIR counterparts from which photo-z estimates can be made and for which spectroscopic redshifts can be obtained. Once these studies are complete we will have a much improved view of the population of DSFGs, locally and at high redshift, and their role in various aspects of galaxy formation and evolution. These observational results can then be compared with cosmological simulations to see if the models match the universe we live in.

尘埃星星形成星系（DSFG）在星系演化的整体图景中的作用目前还不清楚。它们被怀疑是星系团中最大质量星系的祖先，也是类星体的前身，但我们仍然缺乏星系演化整体历史中这些过程的清晰观测图像。这个博士项目将解决几个开放的问题，在这个广泛的领域，包括：比较本地和高红移DSFG使用AKARI FIS所有天空调查重新校准使用PACS数据，以允许比较IRAS通量;候选DSFG星系原星团的调查使用光学和近红外数据搜索非尘埃星团成员。这将使用现有的数据，如鲨鱼调查，和新的观测获得的候选prototclusters;极端星爆星系的性质，如果得到证实，将是最明亮的物体已知的研究。这将使用来自斯巴鲁，凯克和其他地面光学和毫米/亚望远镜的新数据;使用SPIRE未检测到的亚毫米源使用高分辨率SMA图像搜索非常高的红移DSFG，以提供光学/NIR对应物，从中可以进行photo-z估计，并可以获得光谱红移。一旦这些研究完成，我们将有一个更好的观点人口的DSFG，本地和高红移，和他们的作用在各个方面的星系形成和演化。然后，这些观测结果可以与宇宙学模拟进行比较，看看模型是否与我们生活的宇宙相匹配。