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利用的方式提供，支持英国在盖亚数据档案交付中的领导作用，参与科学要求定义，文档和档案设计的关键领域。盖亚是欧空局使命的基石，它提供了第一次天空天体测量普查。对20亿个源进行了调查;允许在银河系结构和演化、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方面取得重大进展。Gaia于2013年12月推出。第三次数据发布（2022年6月13日）产生的巨大数据集继续革命性地改变着天体物理学。第四次和第五次数据发布分别代表标称使命阶段和扩展使命阶段的完整发布。随着这两个时期的完整数据的发布，盖亚的全部潜力将得到实现。这项建议是为了进一步支持联合王国对盖亚协调股的贡献9（CU 9，Gaia档案的出版），以使Gaia数据发布，特别是在：（1）组织和监督beta测试活动;（2）协调发布文件和准备不同格式的文件演示;（3）在处理大量多维数据方面的档案增强;（4）时间序列光度变化数据的验证;（5）支持进一步开发TOPCAT公共访问接口软件。第四次数据发布是本资助期的重点，将涵盖60个月观测的所有历元数据，并包含天体测量、测光和径向速度方面的10^12个条目。