1999A&A...344..918J

This paper reports a detection of the 30 micron emission feature from the C-rich Asymptotic Giant Branch (AGB) star IRAS 03313+6058 based on the ISO-SWS observation. Modeling of the spectral energy distribution shows that this emission starts at about 20 micron and possibly extends to the limit (45 micron) of the observation. By assuming MgS as the carrier, the number ratio of Sulfur atoms in MgS to Hydrogen atoms in total, n(S)/n(H), is 3.0x10^–6 as derived from model fitting. A comparison is made between this emission feature and other AGB and post-AGB objects.