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The gas-phase metallicity is one of the most fundamental properties of a galaxy. Measuring the gas-phase metallicity distribution allows us to gauge the age of the gas and hence how the galaxy has formed over time. By combining the gas-phase metallicity with galaxy evolution simulations, we can gain insight into dynamical processes which may have affected its formation process in the past. In my PhD, we use spatially resolved spectra from the SAMI galaxy survey and TYPHOON survey to explore the gas-phase metallicity of galaxies as a function of stellar mass and environment. We also investigate the systematic errors and reliability of measuring gas-phase metallicity through popular strong emission line diagnostics. |
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