Table 8
Detected nebular shells, their semi-minor and semi-major dimensions in arcsec and in pc.
| Star | Shell radii | Shell radii | λ | Figure | Shell radii | |||||
| arcsec × arcsec | pc × pc | μm | pc × pc | |||||||
| Weis (2011) | ||||||||||
|
|
||||||||||
| Pistol Star | 25.5 × 24 | 0.99 × 0.93 | 8 | A.1 | 0.8 × 1.2 | |||||
| WR102ka | 58 × 55 | 2.25 × 2.13 | 22 | A.2 | ||||||
| LBV1806-20* | _ | _ | 3.4-22 | A.3 | ||||||
| HD 168625 int1 | 19 × 14 | 0.20 × 0.15 | 22 | 1, 2 | 0.17 × 0.13 | |||||
| HD 168625 imd1 | 46 × 41 | 0.49 × 0.44 | 22 | 2 | ||||||
| HD 168625 ext1 | 80: × 70: | 0.85 × 0.75 | 22 | 2 | ||||||
| HD 168625 ring1 | 33 × 40 | 0.35 × 0.43 | 8 | 2 | ||||||
| HD 168607 | 9.5 | 0.10 | 22 | A.4 | ||||||
| MWC930 | 59 × 54 | 1.00 × 0.92 | 22 | A.5 | ||||||
| MWC314 | 26 | 0.38 | 22 | A.6 | ||||||
| HD 152234 | 16–20 | 0.15−0.19 | 3.4−22 | A.7 | ||||||
| HD 164794 | 11 | 0.06−0.10 | 5.6 | A.8 | ||||||
Notes. In the case of a round shell, only one extent is provided. The extent size is defined using the convention of 10% of the peak surface brightness (Tylenda et al. 2003). The distance of the stars to the Earth is available in Table 1.
(*)
There is no indication for the star LBV1806-20 because it is deeply embedded in a complex with other WR stars and it is not possible to determine to which star the nebula belongs. The last column provides the measurements performed by Weis (2011) in pc.