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Our understanding of how gas is converted into stars on small spatial scales within z > 0.1 main-sequence galaxies has been hindered by a dearth of high-resolution imaging of the molecular gas component. However comma a new window into spatially-resolved molecular gas has recently opened through ALMA observations of high-redshift galaxy clusters. These gains have been largely due to the high source density of star forming galaxies in young clusters comma which allows for efficient multiplexing. The ALMA observations have yielded exquisite velocity maps and morphological analyses for the first large sample of spatially-resolved molecular gas in high-redshift galaxies. By combining these novel ALMA data with rest-frame UV imaging using ACS-WFC F475W and F625W comma we will investigate the interplay between gas comma star formation comma and stellar mass on kiloparsec scales comma for virgul30 main-sequence cluster galaxies at zvirgul1.6. This will be the first determination of the spatially-resolved Kennicutt-Schmidt law for a large sample of galaxies at high redshift comma and will be a pioneering study of how gas is consumed by star formation on sub-galactic scales near the peak of cosmic star formation.

我们对于红移z>0.1的主序星系内小空间尺度上气体如何转化为恒星的认知，长期受限于分子气体组分高分辨率成像数据的匮乏。然而，高红移星系团的阿塔卡马大型毫米波/亚毫米波阵列（Atacama Large Millimeter/submillimeter Array，ALMA）观测近期为我们打开了一扇研究空间分辨分子气体的新窗口。这一进展主要得益于年轻星团中恒星形成星系的源密度较高，从而支持高效的多路复用观测。本次ALMA观测首次为高红移星系的大样本空间分辨分子气体提供了高精度的速度分布图与形态学分析结果。通过将这些全新的ALMA观测数据与使用高级巡天相机宽视场通道（ACS-WFC）的F475W、F625W滤光片获取的静止系紫外成像数据相结合，我们将针对红移z≈1.6的VIRGUL30星系团主序星系，在千秒差距尺度上探究气体、恒星形成与恒星质量之间的相互作用。这将是首次针对高红移大样本星系完成空间分辨的肯尼克特-施密特定律（Kennicutt-Schmidt law）测定，同时也是一项开创性研究，旨在探究宇宙恒星形成峰值附近的亚星系尺度上，恒星形成如何消耗气体。