Table 4
Different circumstellar geometries with a list of constituents.
| Geometry | Ks-band total linear polarization | (Ks−L′)int | (Ks−L′)ext |
degree  [%] |
(intrinsic) | (with dust extinction) | |
|
|
|||
| Star | 0 (~ 6% foreground pol. at the GC) | −0.9 | 0.4 |
| Star+rotationally flattened envelope | 0.2 | 0.1 | 1.4 |
| (50° inclination) | |||
| Star+flared disk | 3.2 | 0.3 | 1.6 |
| Star+dense bow shock | 4.1 | 1.9 | 3.2 |
| (inclined) | |||
| Star+spherical dusty envelope+dense bow shock | 1.0 | 1.6 | 2.9 |
| (inclined) | |||
| Star+flattened envelope+cavities | 10.1 | 1.2 | 2.4 |
| (90% inclination) | |||
| Star+flared disk+flattened envelope+cavities | 10.5 | −1.3 | −0.03 |
| (90% inclination) | |||
| Star+disk+cavities+dense bow shock | 25.0 | 1.9 | 3.2 |
Notes. Important parameters are the total linear polarization degree in Ks band (2.2 μm) and the color index Ks−L′. The observed values of the degree and the color index are matched by the composite model star+disk+cavities+dense bow shock that is used in the following analysis.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.