论文标题
在高红移时吸收分子氢。科学案件的科学案例
Molecular hydrogen in absorption at high redshifts. Science cases for CUBES
论文作者
论文摘要
背景源光谱中分子氢（$ \ rm H_2 $）的吸收线是对介入冷中性培养基中物理条件的有力探针。在高红移时，$ z> 2 $，$ \ rm h_2 $线在光学域中方便地转移，从而可以使用地面望远镜执行高分辨率光谱，这对于对冷气的正确分析至关重要。我们根据低分辨率光谱调查（例如斯隆数字天空调查（SDSS））中有效的预选技术的发展来描述最近的观察进步。具有较高蓝色通量的下一代光谱仪，例如立方体，肯定会显着提高随访观察结果的效率和结果。在本文中，我们讨论了立方体的高优先级科学案例，建立在High-Z上的$ \ rm H_2 $观测值的基础上：在常规星系的冷阶段探测物理条件，而活跃银河系核的流出气体则流出了气体。
Absorption lines from molecular hydrogen ($\rm H_2$) in the spectra of background sources are a powerful probe of the physical conditions in intervening cold neutral medium. At high redshift, $z>2$, $\rm H_2$ lines are conveniently shifted in the optical domain, allowing the use of ground-based telescopes to perform high-resolution spectroscopy, which is essential for a proper analysis of the cold gas. We describe recent observational progress, based on the development of efficient pre-selection techniques in low-resolution spectroscopic surveys such as the Sloan Digital Sky Survey (SDSS). The next generation of spectrographs with high blue-throughput, such as CUBES, will certainly significantly boost the efficiency and outcome of follow-up observations. In this paper, we discuss high priority science cases for CUBES, building on recent $\rm H_2$ observations at high-z: probing the physical conditions in the cold phase of regular galaxies and outflowing gas from active galactic nucleus.
