New detections of maser and thermal SiO emission.
Abstract
A sensitive search for J = 1-0, v = 1 and v = 0 SiO in a variety of stellar and interstellar sources has been performed with the 100 m telescope of the MPIfR. Numerous new detections of SiO maser emission from Mira variables, short-period variables, and OH/IR stars were made which increase the number of known SiO sources by nearly two-thirds. Strong linearly polarized velocity features were observed in the v = 1 emission of R Leo. Maser emission in the v = 0 line was seen in at least four Mira variables; thermal or quasi-thermal v = 0 emission was observed in several other sources. First detections of thermal v = 0 emission in the J = 1-0 line of SiO were made in the star forming regions W3 and NGC 7538.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1985
- DOI:
- 10.1086/184566
- Bibcode:
- 1985ApJ...298L..55J
- Keywords:
-
- Masers;
- Silicon Oxides;
- Stellar Envelopes;
- Thermal Emission;
- Linear Polarization;
- Mira Variables;
- Stellar Spectra;
- Variable Stars;
- Astrophysics