Gaia CU9: facilitating UK exploitation of Gaia data

Gaia CU9：促进英国对 Gaia 数据的利用

• 批准号: ST/X002683/1
• 负责人: Nicholas Walton
• 金额: $ 82.15万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FX002683%2F1
• 关键词: Gaia; CU9; facilitating; UK; exploitation

This work will ensure Gaia data is made available in a manner which is optimal for UK science exploitation, by supporting UK leadership roles in the delivery of the Gaia Data Archive, with involvement in the key areas of science requirements definition, documentation, and archive design. Gaia is the cornerstone ESA mission which is providing the first astrometric census of the sky. Of order two billion sources are surveyed; allowing major advances in Galactic structure and evolution, stellar evolution, solar system dynamics, exoplanetary systems, cosmology and fundamental physics. Gaia was launched in December 2013. The huge data set resulting from the third data release (13 June 2022) continues to revolutionise much of astrophysics. The fourth and fifth data releases represent the full releases from the nominal mission and extended mission phases respectively. With the full epoch data to be released in both, the full potential of Gaia will be realised. This proposal is to further support the UK contributions to the Gaia Coordination Unit 9 (CU9, Publication of the Gaia archive) in enabling the Gaia data releases, especially in: (1) the organization and supervision of the beta-testing activities; (2) coordinating the release documentation and preparing the presentation of the documentation in different formats; (3) archive enhancements in dealing with high volume, multi-dimensional data; (4) Validation of the time series photometric variability data and (5) support for further developments of the TOPCAT public-access interface software. The fourth data release, the focus of this grant period, will cover all epoch data for 60 months of observations, and contain of order 10^12 entries, in astrometry, photometry and radial velocities.

这项工作将确保盖亚数据以最适合英国科学开发的方式提供，通过支持英国在盖亚数据档案交付中的领导作用，并参与科学需求定义、文档记录和档案设计等关键领域。盖亚是欧空局的基石任务，它提供了第一次天空天体普查。调查了约 20 亿个来源；使银河结构和演化、恒星演化、太阳系动力学、系外行星系统、宇宙学和基础物理学取得重大进展。盖亚于 2013 年 12 月发射。第三次数据发布（2022 年 6 月 13 日）产生的庞大数据集继续给天体物理学带来革命性的变化。第四和第五次数据发布分别代表名义任务和扩展任务阶段的完整发布。随着两者都发布完整的纪元数据，盖亚的全部潜力将得到实现。该提案旨在进一步支持英国对盖亚协调单元 9（CU9，盖亚档案发布）的贡献，以实现盖亚数据发布，特别是在：（1）贝塔测试活动的组织和监督； (2) 协调发布文档并准备不同格式的文档呈现； (3) 处理大容量、多维数据的归档增强； (4) 验证时间序列光度变异性数据；(5) 支持 TOPCAT 公共访问接口软件的进一步开发。第四次数据发布是本次资助期间的重点，将涵盖 60 个月观测的所有历元数据，并包含天体测量、光度测量和径向速度方面的 10^12 阶条目。