| Description: | Neutral atomic gas (HI) acts as the primary fuel reservoir for the star-formation process in galaxies. It is also believed to be one of the factors that shape the evolutionary paths of star-forming galaxies. In the nearby Universe, the HI properties of galaxies are known to correlate with their optical properties (e.g. luminosity, colour) and stellar mass via the HI scaling relations. Measurements of the HI scaling relations at earlier epochs (i.e. higher redshifts) provide key information to understand the evolution of neutral gas in galaxies and how it influences galaxy evolution. In this talk I will discuss the measurements of the HI scaling relations at intermediate redshifts (z∼0.35), obtained from a spectral line stacking experiment with the upgraded Giant Metrewave Radio Telescope (uGMRT). These measurements allow us to infer the evolution of the neutral gas reservoir of star-forming galaxies in the past four billion years, and to estimate their gas accretion rate over this period. |
