Conveners
Galaxies
- Chiaki Kobayashi (University of Hertfordshire)
Studies of the chemical evolution of stellar populations in distant galaxies have improved in the past decade with the advance of large galaxy surveys and telescopes that provide high signal-to-noise spectra that can then be analyzed with improved full-spectrum fitting techniques. Using high resolution spectra taken at the centers of elliptical galaxies, I obtain ages, central velocity...
The first months of JWST science operations have brought forward multiple AGN candidates in the early universe. Acquiring high quality spectra across such epochs is imperative for constraining how early universe galaxy populations may have existed, and can help explore the nature of their stellar populations, in addition to AGN components if present. Dedicated study of such high-redshift...
The growth of galaxies across cosmic time is regulated by a variety of processes, such as the formation of stars from the infall of new gas, the processing of gas into heavier elements within stars, and the release of this enriched material when stars die. By exploring the chemical content of galaxies at different cosmic epochs, we can constrain the mechanisms by which galaxies evolve. In...
Metallicity is a fundamental physical property that strongly constrains galaxy formation and evolution. The formation of stars in galaxies is highly impacted by metal production and energy release from supernova explosions, which suppresses star formation by generating outflows and evaporating star-forming clouds. However, this process - supernova feedback - is uncertain. We thus include...
Nebular emission lines are a powerful diagnostic tool for tracing the chemical evolution in star-forming galaxies (SFGs) across cosmic time. The COS Legacy Spectroscopy SurveY (CLASSY) is a treasury survey that comprises UV+optical spectra of 45 local SFGs covering a broad range of physical properties in terms of gas-phase metallicity, ionization parameter, star-formation rate, and stellar...
