UK Involvement in LSST: Phase B (Edinburgh component)

英国参与 LSST：B 阶段（爱丁堡部分）

• 批准号: ST/S006206/1
• 负责人: Robert Mann
• 金额: $ 366.47万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FS006206%2F1
• 关键词: UK; Involvement; LSST; Phase; Edinburgh

We propose a continuation of the programme enabling UK participation in the Large Synoptic Survey Telescope (LSST), one of the most ambitious science projects planned for the next decade, and a key part of the astronomical landscape in the 2020s. LSST will have both a large collecting area and a wide field of view, giving it an etendue more than an order of magnitude larger than any current or planned facility. This will enable it to survey the whole visible sky every few days, leading to both a stacked sky survey of great depth, and the ability to find moving, variable, and transient objects. It will make advances over a large range of science, from Potentially Hazardous Asteroids, through the structure of the Milky Way, to the most distant quasars, and the nature of dark matter and dark energy - all areas where UK astronomers stand poised to make leading contributions.LSST originated as a US project but is now transforming into an international one. This mostly requires operational support rather than capital construction, which makes engagement in LSST tremendous value for money. Rather than simply being an old-fashioned sky-atlas resource, the best LSST science will come through organised, massive, and systematic exploitation of its vast dataset in international teams. For UK astronomers to play a strong role it is therefore crucial to engage early and fully - in science working group planning, in development of specialised analysis software (the so-called "Level 3") and to have a framework to implement and run that Level 3 code. The LSST:UK consortium aims to meet these goals through a four-phase programme. STFC committed £17.7M in response to our Phase A proposal, and we are now requesting funding for Phase B (April 2019 - March 2023). There are three elements to the lifetime costs of the full, four-phase programme: 1. To allow full data access, LSST requires a contribution to operations. These funds will only be required in later phases, but STFC has concluded a Memorandum of Agreement on behalf of the UK community and the required funds were committed in response to our Phase A proposal. 2. LSST requires that we make provision for the added cost of UK community access. Rather than hand over more cash, our proposal is to construct a UK Data Access Centre (DAC). This will enable us to fully engage immediately with LSST both scientifically and technically, will allow much more control for UK astronomers, and has a potential for industry involvement. We have been prototyping the UK DAC during Phase A, and now seek funds for its deployment, in readiness for LSST Commissioning. In accordance with the Science Board recommendation in our Phase A award, this is being conducted within the context of the development on coordinated computing infrastructure for STFC science being planned by the UKT0 consortium. 3. To maximise UK scientific return, we further propose a community development programme for Level 3 algorithms and data products, working closely in conjunction with the UK DAC. Phase B funding will build on the successes of our Phase A programme and on focus on further developing of Level 3 software tools through the use of LSST Commissioning data

我们建议继续该计划，使英国能够参与大型综合巡天望远镜（LSST），这是未来十年计划的最雄心勃勃的科学项目之一，也是21世纪20年代天文景观的关键部分。LSST将具有大的收集面积和宽的视场，使其集光率比任何现有或计划中的设施都大一个数量级以上。这将使它能够每隔几天就对整个可见天空进行一次调查，从而实现深度叠加的天空调查，并能够找到移动，可变和短暂的物体。它将在广泛的科学领域取得进展，从潜在危险的小行星，通过银河系的结构，到最遥远的类星体，以及暗物质和暗能量的性质-所有英国天文学家准备做出领先贡献的领域。LSST最初是美国项目，但现在正在转变为国际项目。这主要需要业务支持，而不是基本建设，这使得参与LSST具有巨大的资金价值。最好的LSST科学将不仅仅是一个老式的天空图集资源，而是通过国际团队对其庞大数据集的有组织，大规模和系统的开发来实现。因此，对于英国天文学家来说，要发挥强大的作用，至关重要的是尽早充分参与科学工作组的规划，开发专门的分析软件（所谓的“3级”），并建立一个框架来实施和运行3级代码。LSST：英国联盟旨在通过四阶段计划实现这些目标。STFC承诺为我们的A阶段提案提供1770万英镑，我们现在正在申请B阶段（2019年4月至2023年3月）的资金。整个四阶段方案的生命周期费用有三个要素：1.为了允许完全的数据访问，LSST需要对操作做出贡献。这些资金将只需要在以后的阶段，但STFC已经代表英国社区缔结了一份协议备忘录，所需的资金是为了响应我们的A阶段提案。2. LSST要求我们为英国社区接入的额外成本做好准备。我们的建议是建立一个英国数据访问中心（DAC），而不是交出更多的现金。这将使我们能够在科学和技术上立即全面参与LSST，将使英国天文学家能够获得更多的控制权，并有可能让行业参与其中。我们在A阶段一直在制作英国DAC的原型，现在正在为其部署寻求资金，为LSST调试做好准备。根据科学委员会在我们的A阶段合同中的建议，这是在UKT 0财团计划的STFC科学协调计算基础设施开发的背景下进行的。3.为了最大限度地提高英国的科学回报，我们进一步提出了一个3级算法和数据产品的社区发展计划，与英国DAC密切合作。B阶段的资金将建立在我们A阶段计划的成功基础上，重点是通过使用LSST调试数据进一步开发3级软件工具

项目成果

Strategies for optimal sky subtraction in the low surface brightness regime

• DOI: 10.1093/mnras/stae236
• 发表时间: 2024-01
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: A. Watkins;S. Kaviraj;Chris C Collins;J. Knapen;L. Kelvin;Pierre-Alain Duc;Javier Román;J. C. Miho

Optimizing the shape of photometric redshift distributions with clustering cross-correlations

通过聚类互相关优化光度红移分布的形状

• DOI: 10.1093/mnras/stac3630
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Stölzner B