论文标题
带有Spitzer的高红移宇宙
The high-redshift Universe with Spitzer
论文作者
论文摘要
星系何时开始形成星星？遥远的星系在星系形成模型和电离时期的作用是什么？红移> 〜4处典型的星形星系的典型条件是什么？为什么星系进化取决于环境？ Spitzer太空望远镜一直是解决这些问题的关键工具。恒星质量，年龄和恒星形成率的准确知识需要测量静止框架光学（和紫外线）光，只有Spitzer才能在高红移时探测足够大的典型星系样本。这些科学目标中的许多是詹姆斯·韦伯太空望远镜的主要科学驱动力，而斯皮策为我们提供了第一次探索。
When did galaxies start forming stars? What is the role of distant galaxies in galaxy formation models and the epoch of reionization? What are the conditions in typical star-forming galaxies at redshifts >~4? Why is galaxy evolution dependent on environment? The Spitzer Space Telescope has been a crucial tool for addressing these questions. Accurate knowledge of stellar masses, ages and star formation rates requires measuring rest-frame optical (and ultraviolet) light, which only Spitzer can probe at high redshifts for a sufficiently large sample of typical galaxies. Many of these science goals are the main science drivers for the James Webb Space Telescope, and Spitzer afforded us their first exploration.
