高红移Lyα发射线星系观测研究

发布时间：2018-04-14 20:13

本文选题：高红移 + 发射线星系　；参考：《中国科学:物理学力学天文学》2017年04期

【摘要】：高红移Lyα发射线星系的研究是理解宇宙恒星形成历史和早期星系形成的关键.作为高红移宇宙的重要组成部分,Lyα发射线星系是研究星系形成、宇宙恒星形成和结构形成历史以及宇宙再电离时期的重要探针.近20年随着8 10 m级地面望远镜和红外设备的发展,利用窄带测光技术和光谱观测,人们对Lyα发射线星系的研究取得了巨大进展.本文主要介绍由窄带测光技术选取的红移2以上的Lyα发射线星系的成团性质、恒星星族和发射线星云性质、恒星形成性质、紫外连续谱和Lyα发射线形态,与莱曼断裂星系的关系,对宇宙恒星形成率密度的贡献,以及极高红移Lyα发射线星系对宇宙再电离时期的限制等方面的研究进展.
[Abstract]:The study of Gao Hong's Ly 伪 emission line is the key to understanding the history of cosmic star formation and the formation of early galaxies.As an important component of Gao Hong's migration of the universe, the Ly 伪 emission line galaxy is an important probe for studying the formation of galaxies, the history of cosmic star formation and formation, and the period of cosmic reionization.In the last 20 years, with the development of 8 ~ 10 m ground telescope and infrared equipment, great progress has been made in the study of Ly 伪 emission line galaxies by using narrowband photometry and spectral observation.This paper mainly introduces the cluster properties, star family and emission nebula, star formation, ultraviolet continuous spectrum and Ly 伪 emission line morphology of Ly 伪 emission line galaxies with redshift above 2 selected by narrow-band photometry.The relationship with the Lyman fracture galaxy, the contribution to the cosmic star formation rate density, and the limitation of the reionization period caused by the Ly 伪 emission line of the polar Gao Hong.
【作者单位】：天津师范大学天体物理中心;
【基金】：国家自然科学基金资助项目(编号:11373027)
【分类号】：P152

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