Investigating galactic evolutionary mechanisms through near-IR spectroscopy of high redshift galaxies

该项目将包括使用高红移星系的近红外光谱数据来研究控制星系形成和演化的物理过程。该项目的主要重点将是使用来自KLevel的近红外积分场(即3D)光谱数据，这是一个欧洲南方天文台的大型计划(几乎完成)，目标是在多个近红外波段的约100个星系(包括透镜和非透镜星系)(VLT多IFU近红外光谱图)(与其他KMOS调查，已集中在一个单一的波段)。主要目标是探测和绘制主要(静止框架)光学星云发射线，以追踪金属丰度分布、化学丰度、气体激发、气体物理性质(密度、电离参数等)、消光、运动学(包括外流的存在和性质)。这些独特的观测数据将提供关于不同物理机制在调节宇宙活动高峰期星系中恒星形成方面所起作用的关键信息和制约因素。根据进展情况，该项目还可能包括参与JWST-NIRSpec和/或VLT-MONS GTO计划的准备活动(例如模拟)，甚至可能访问和分析这些新设施提供的一些最早的数据。

The project will consist in using near-IR spectroscopic data of high redshift galaxies to investigate the physical processes regulating galaxy formation and evolution.The primary focus of the project will be the use of near-IR integral field (i.e. 3D) spectroscopic data from KLEVER, which is an ESO Large Programme (nearly completed)targeting about 100 galaxies (both lensed and unlensed) at z~1-2 with KMOS (the VLT multi-IFU near-IR spectrograph) in multiple near-IR bands (in contrast with other KMOS surveys, which hadfocussed on a single band). The main goal is to detect and spatially map the main (rest-frame) optical nebular emission lines to trace the metal enrichment distribution, chemical abundances,gas excitation, gas physical properties (density, ionisation parameter, etc...), extinction, kinematics (including the presence and properties of outflows). These uniqueobservational data will provide key information and constraints on the role played by different physical mechanisms in regulating the formation of stars in galaxies aroundthe peak of their cosmic activity.Depending on the progress, it may also be possible that the project will include the participation in the preparatory activities (e.g. simulations) for the JWST-NIRSpec and/or VLT-MOONS GTO programmes,and possibly even access and analyse some of the very first data delivered by these new facilities.