Interstellar silicon sulfide
Abstract
Silicon sulfide has been observed in Sgr B2 at 108.92 GHz and 90.77 GHz and in Orion A at 108.92 GHz. The column density is 1-2 x 10 to the 13th/sq cm in both sources. SiS was not seen in two other molecular clouds where SiO has been detected; nor was it seen in a variety of late-type stars with varying C/O ratios. It appears that SiS is significantly less abundant than SiO in the interstellar medium and probably at least somewhat less abundant in oxygen-rich late-type variable stars.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1981
- DOI:
- 10.1086/159015
- Bibcode:
- 1981ApJ...247..112D
- Keywords:
-
- Abundance;
- Interstellar Chemistry;
- Interstellar Matter;
- Molecular Clouds;
- Silicon Compounds;
- Sulfides;
- Late Stars;
- Line Spectra;
- Radio Sources (Astronomy);
- Silicon Oxides;
- Astrophysics