Connecting Galaxies with Host Dark Matter Halos with Next Generation Sky Surveys

星系是如何在暗物质晕中形成的，目前还没有详细的了解。这个项目是对我们所看到的星系和暗物质之间的联系的观测研究，从大尺度结构的角度来看，以及暗晕本身的性质。它建立在已经完成的工作的基础上，将星系和质量总成(GAMA)星系目录与使用基洛度调查(KILDS)的弱透镜研究相结合。GAMA和儿童都是最先进的，但即将被更大、更强大的调查所取代。孩子们在智利帕拉纳尔岛进行了260万英里的VST表演。目前，8米斯巴鲁望远镜上的一个项目已经在进行中，将进行更灵敏的透镜测量，2022年，两个新的天文台--智利的鲁宾天文台和欧洲航天局的欧几里德卫星--将开始以更高的精度绘制大片天空的地图，改变这一研究领域。与此同时，大规模的星系光谱调查将使GAMA黯然失色，GAMA包含约30万个星系的数据。特别是，Waves调查将测量数百万个星系，覆盖的区域比GAMA更广，限制也更暗。这些下一代数据集的结合将使我们能够以比目前可能的更高的精度和更详细的方式研究银河系与晕的联系。这些信息对星系形成理论来说是至关重要的基本输入。

How galaxies form in dark matter halos is still not understood in detail. This project is an observational study of the link between the galaxies we see and the dark matter, both in terms of the large-scale structure, and of the properties of the dark halos themselves.It builds on work already done combining the Galaxy And Mass Assembly (GAMA) galaxy catalog with weak lensing studies using the Kilo-Degree Survey (KiDS). Both GAMA and KiDS are state of the art but are about to be superseded by even larger and more powerful surveys. KiDS was performed with the 2.6m VST on Paranal in Chile. Right now a project on the 8m Subaru telescope is already underway with more sensitive lensing measurements, and in 2022 two new observatories - the Rubin observatory in Chile and the Euclid satellite of the European Space Agency - will start to map large areas of the sky with even higher precision, transforming this research field. At the same time, massive spectroscopic galaxy surveys will eclipse GAMA, which contains data for some 300,000 galaxies. In particular, the WAVES survey will measure millions of galaxies, over a wider area and to fainter limits than GAMA. The combination of these next-generation data sets will allow us to study the galaxy-halo connection with much higher precision, and in more detail, than was possible so far. This information is vital, fundamental input to galaxy formation theory.