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

通过高红移星系的近红外光谱研究星系演化机制

• 批准号: 2120607
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2120607
• 关键词: Investigating; galactic; evolutionary; mechanisms; through

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.

该项目将利用高红移星系的近红外光谱数据来研究星系形成和演化的物理过程。该项目的主要重点将是利用近红外积分场来自KLEVER的（即3D）光谱数据，这是ESO的大型项目（接近完成）瞄准约100个星系（包括透镜和非透镜）在z~1-2与KMOS（VLT多IFU近红外光谱仪）在多个近红外波段（与其他KMOS调查相比，其集中在单个波段）。主要目标是探测和空间映射主要（静止框架）光学星云发射线，以追踪金属富集分布、化学丰度、气体激发、气体物理性质（密度、电离参数等），灭绝，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键信息和制约因素，说明不同的物理机制在调节星系中恒星在其宇宙活动高峰期形成过程中所起的作用。视进展情况，该项目也可能包括参与筹备活动这些新设施将为JWST-NIRSpec和/或VLT-MOONS GTO计划提供数据（例如模拟），甚至可能访问和分析这些新设施提供的首批数据。