Molecular Line Observations of the SiO Maser Source IRAS 19312+1950

Jun-ichi Nakashima, Shuji Deguchi, Hiroshi Imai +1

IRAS 19312+1950 is a unique SiO maser source, exhibiting a rich set of molecular radio lines, although SiO maser sources are usually identified as oxygen-rich evolved stars, in whi…