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引用次数: 0
摘要
摘要:本文介绍了詹姆斯·韦伯太空望远镜(JWST)保证时间观测(GTO)项目“星系集合的物理学:高z星系的IFS观测”的概况。这是一个雄心勃勃的项目，旨在用NIRSpec积分场光谱仪(IFS)调查遥远星系的内部结构，已经分配了273小时的JWST黄金时间。NIRSpec能力将为我们提供超过40个星系和活动星系核样品在1-5 μm范围内的空间分辨光谱，红移范围为3 < z < 9。IFS对单个星系的观测将使我们能够详细研究推动整个宇宙时代星系演化的最重要的物理过程。更详细地说，主要的具体目标是:追踪恒星形成的分布，绘制恒星群的分辨属性，追踪气体运动学(即速度场，速度色散)，从而确定动态质量，并确定非病毒运动(流出和流入)，并绘制金属度梯度和尘埃衰减。
The JWST/NIRSpec GTO programme “The Physics of Galaxy Assembly: IFS observations of high-z galaxies”
Abstract We present an overview of the project “The Physics of Galaxy Assembly: IFS observations of high-z galaxies”, a Guaranteed Time Observations (GTO) programme of the James Webb Space Telescope (JWST). It an ambitious project aimed at investigating the internal structure of distant galaxies with the NIRSpec integral field spectrograph (IFS), having allocated 273 hours of JWST prime time. The NIRSpec capability will provide us with spatially resolved spectroscopy in the 1-5 μm range of a sample of over forty galaxies and Active Galactic Nuclei in the redshift range 3 < z < 9. IFS observations of individual galaxies will enable us to investigate in detail the most important physical processes driving galaxy evolution across the cosmic epoch. More in detail, the main specific objectives are: to trace the distribution of star formation, to map the resolved properties of the stellar populations, to trace the gas kinematics (i.e. velocity fields, velocity dispersion) and, hence, determine dynamical masses and also identify non-virial motions (outflow and inflows), and to map metallicity gradients and dust attenuation.
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