RSAA Colloquia / Seminars / Feast-of-Facts: Tuesday, 23 July 2019, 11:00-12:00; Duffield Lecture Theatre


Fuyan Bian

"Evolution of Ionized Interstellar Medium from High-redshift to Low-redshift."

The ionized interstellar medium (ISM) provides essential information on the star-forming environments, metal enrichment, and underlying ionizing radiation field in galaxies. It is crucial to understand how the ionized ISM evolves with Cosmic time. In this talk, I will present a sample of local galaxies that closely resemble the properties of high-redshift galaxies at high redshift. These local analogs of high-redshift galaxies provide a unique local laboratory to study high-redshift galaxies. I will discuss how to use these analogs to improve our understanding of the high-redshift metallicity empirical calibrations and physical mechanism(s) to drive the evolution of optical diagnostics lines from high redshift to low redshift.