论文标题
使用Harmoni积分光谱仪模拟高红移星系的气体运动学研究
Simulating gas kinematic studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph
论文作者
论文摘要
我们使用新的Ramses2HSIM管道与ELT Harmoni IFU谱仪的模拟观测管道（HSIM）一起使用新的Ramses2HSIM管道，介绍了用流体动力学 + N体密码RAMSES在10个PC分辨率宇宙学模拟中形成的星系中气体运动学的模拟观察结果。我们后处理每个模拟细胞的星系气体运动学和Hα线发射，并整合发射以产生灭绝校正的输入立方体。然后，我们使用Harmoni模拟输入立方体的观察，以进行一系列曝光时间，空间采样和光谱分辨率。我们分析了模拟观测值，以恢复星系特性，例如其运动学，并与已知的模拟值进行比较。我们研究了“真实”和“观察到的”运动值之间偏见的原因，证明了推断旋转曲线对仪器点扩散功能知识的敏感性。
We present simulated observations of gas kinematics in galaxies formed in 10 pc resolution cosmological simulations with the hydrodynamical + N-body code RAMSES, using the new RAMSES2HSIM pipeline with the simulated observing pipeline (HSIM) for the ELT HARMONI IFU spectrograph. We post-process the galaxy's gas kinematics and Hα line emission for each simulation cell, and integrate the emission to produce an extinction-corrected input cube. We then simulate observations of the input cube with HARMONI, for a range of exposure times, spatial sampling, and spectral resolution. We analyze the mock observations to recover galaxy properties such as its kinematics and compare with the known simulation values. We investigate the cause of biases between the 'real' and 'observed' kinematic values, demonstrating the sensitivity of the inferred rotation curve to knowledge of the instrument's point spread function.
