The Structure of the Envelopes of Maser Stars
Abstract
A review is given of interferometric observations of masers found in the circumstellar envelopes of evolved stars, focusing on the geometry and velocity structure of the envelopes. It is concluded that most red giants and supergiants lose mass in radially expanding axisymmetric outflows, supporting the interacting wind model for the formation of planetary nebulae.
- Publication:
-
Cool Stars, Stellar Systems, and the Sun
- Pub Date:
- 1990
- Bibcode:
- 1990ASPC....9..417B
- Keywords:
-
- Interstellar Masers;
- Red Giant Stars;
- Stellar Envelopes;
- Stellar Structure;
- Supergiant Stars;
- Hydroxyl Emission;
- Line Spectra;
- Planetary Nebulae;
- Stellar Evolution;
- Stellar Winds;
- Astrophysics