| Alternative title | Observations of OMI AND. III. A model |
|---|
| DOI | Resolve DOI: https://doi.org/10.1086/130946 |
|---|
| Author | Search for: Poeckert, R.1; Search for: Gulliver, A. F.; Search for: Marlborough, J. M. |
|---|
| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
|
|---|
| Format | Text, Article |
|---|
| Subject | shell star; emission-line star |
|---|
| Abstract | We present a model for the Be star o And which attempts to account for the observed spectroscopic, photometric, and polarimetric changes during the recent shell episode. The model suggests that the waning of the shell was a two-phased process. The initial phase was one in which the density in the inner regions of the circumstellar envelope decreased resulting in a decrease in polarization. Subsequently, the density in the outer regions decreased resulting in the fading of the shell absorption lines. A simple model in which the expansion velocity is independent of time and the mass-loss rate decreases, resulting in a density decrease which propagates outward, fails to satisfy the observed changes in o And. A more complex scenario which does fit the data is proposed. |
|---|
| Publication date | 1982-02 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NRC number | NRCC 20241 |
|---|
| NPARC number | 5329859 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | c346c243-f74c-4e92-8e22-ae777888f423 |
|---|
| Record created | 2009-01-09 |
|---|
| Record modified | 2021-05-26 |
|---|
