通过HI 21厘米发射和吸收探测星系演化：平方公里阵列的现状和前景
Probing galaxy evolution through HI 21-cm emission and absorption: current status and prospects with the Square Kilometre Array
摘要：
平方公里阵列（SKA）的主要科学目标之一是了解原子氢（HI）气体在整个宇宙时间的星系演化中所扮演的角色。氢原子21厘米超精细跃迁谱线是探测和研究星系中HI气体性质的最佳工具之一。在这篇文章中，我们回顾了我们目前的理解HI气体及其与星系的关系，通过观测的21厘米线的发射和吸收。此外，我们提供了一个概述的HI科学，将可能与SKA和它的前光标和探路者，即HI 21厘米发射和吸收的星系研究，从附近的高红移，将跟踪各种过程的星系演化。
英文摘要：
One of the major science goals of the Square Kilometre Array (SKA) is to understand the role played by atomic hydrogen (HI) gas in the evolution of galaxies throughout cosmic time. The hyperfine transition line of the hydrogen atom at 21-cm is one of the best tools to detect and study the properties of HI gas associated with galaxies. In this article, we review our current understanding of HI gas and its relationship with galaxies through observations of the 21-cm line both in emission and absorption. In addition, we provide an overview of the HI science that will be possible with SKA and its pre-cursors and pathfinders, i.e. HI 21-cm emission and absorption studies of galaxies from nearby to high redshifts that will trace various processes governing galaxy evolution.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
