The Circumstellar Envelope of Vx-Sagittarii
Abstract
By use of the data for VLBI observation of SiO masrs, and MERLIN observation of H2O and OH masers of VX Sgr, we found that the SiO, H2O, OH 1665/7, OH 1612 masers occur on a few separated shells, and the order of magnitude of the radii of their corresponding shells is 1014, 1015, 1016 cm, respectively. The field of the expanding velocity of the shells is obtained. It is important to note ice-layer covers on the surface of dust and grain for outlayer envelopes.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- June 1992
- DOI:
- 10.1007/BF00653259
- Bibcode:
- 1992Ap&SS.192...53Y
- Keywords:
-
- Interstellar Masers;
- Radio Emission;
- Stellar Envelopes;
- Variable Stars;
- Hydroxyl Emission;
- Silicon Oxides;
- Water;
- Astrophysics