Dense Molecular Gas in Lenticular Galaxies
Dense Molecular Gas in Lenticular Galaxies
We made CO and HCN simultaneous observations of lenticular galaxies, NGC 404, NGC 3593 and NGC 4293, and detected HCN emission in NGC 3593 and NGC 4293 as well as CO in all the galaxies. The I(HCN)/I(CO) ratios were 0.025+-0.006 and 0.066+-0.005 in NGC 3593 and NGC 4293, respectively, which …