Development of spectral database to support observation of interstellar organic molecules

Interstellar molecules are identified by the comparison of the laboratory frequencies and those observed by the radio telescopes. Many spectral lines due to the saturated organic molecules like methanol and methyl formate have been observed. However, spectral database necessary for the identification is still qualitatively and quantitatively insufficient. In this study, laboratory microwave spectra of organic molecules are recorded and put the data through the online database so that our study supplements the needs to the database.