Mr. Pratyush Kumar Das

Galaxy morphology and angular momentum are deeply connected, but measuring stellar specific angular momentum robustly from integral-field spectroscopy remains challenging because of limited radial coverage and observational uncertainties. In this talk, I will present Spinny, a new uncertainty-aware pipeline developed to measure the total stellar specific angular momentum from spatially resolved kinematic data. Applying this framework to the SAMI Galaxy Survey, I will show that the stellar angular momentum–mass relation is strongly organised by galaxy structure: disc-dominated and late-type systems occupy systematically higher-angular-momentum sequences than bulge-dominated and early-type galaxies at fixed stellar mass. I will also discuss how this connects angular momentum to stellar spin, star formation rate, and galaxy evolution more broadly.