Toward understanding reionization and Lyman-alpha emitter from green pea galaxies

Lyman-alpha emitter (LAE) is one of the most important probe of cosmic reionization. LAEs also contribute a significant amount of ionizing photons during reionization. This motivates us to understand the physics of LAEs. We have shown that low redshift green pea galaxies are strong Lyman-alpha emitters. These nearby LAEs enable us to do detailed multiwavelength studies. From green peas, we have gained deep understanding about how Lyman-alpha and Lyman-continuum escape from galaxy, and how to better diagnose HI in IGM with Lyman-alpha. We also start to understand other physical properties: stellar population, gas metallicity, galactic morphology, environment, and the role of AGNs. In nearby universe, we can extend these studies to the very faint-end LAEs that are too faint to be detected in high redshift universe.

Huan Yang (Carnegie Observatories)
1st floor meeting room, KIAA
Tue, 2018-07-24 12:00 to 13:00