I'm investigating how the environment effects the evolution of spiral galaxies, using the neutral hydrogen (HI) content of a galaxy. I will use to this project the recently re-processed southern-sky HIPASS dataset, matched with optical datasets such as 6dF to trace the HI content of galaxies across the whole of the southern sky. One of the outcomes will be a global HI content map, which will show where spiral galaxies are HI deficient - this will be correlated with the local environment, and compared with the latest simulations on galaxy evolution.
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