Evolution of Neutral Gas in Galaxies

这个项目将由美国一位著名的专家 在中性氢的研究中，试图回答许多问题中的一些问题， 关于星系形成和演化的未解之谜 从原始的气体云到复杂的恒星系统 我们现在看到的气体。 这项研究将比较结构和 具有相应高红移的邻近星系的动力学 更年轻的物体。 通过研究 继续修改星系的结构，并测量 中性氢在足够大的体积中的分布 空间，严格的限制将放在效率， 原始气体向引力束缚星系的转化 系统.

This project, to be carried out by one of the leading U.S. experts in neutral hydrogen studies, seeks to answer some of the many unanswered questions about the formation and evolution of galaxies from primordial clouds of gas into the complex systems of stars and gas we now see. This investigation will compare the structure and dynamics of nearby galaxies with corresponding high redshift objects of much younger age. By studying the processes which continue to modify the structure of galaxies, and surveying the distribution of neutral hydrogen in a sufficiently large volume of space, strict constraints will be placed on the efficiency of conversion or primordial gas into gravitationally bound galactic systems.