The Search for Dense Gas in IR Luminous Galaxies

摘要

We present a progress report on the study of the properties of the dense molecular gas in a sample of nearby IR luminous galaxies. Our preliminary results suggest that the ratio of the HCN(32) to HCN(10) intensity can be used to tightly constrain the density of the dense gas. One galaxy of our sample shows a very unusual line ratio, which might be due to the presence of both of an AGN and a nuclear starburst in this galaxy.