Table A.1
Photoionization model parameters and modelling results for the program nebulae.
| PN G No. | 001.2+02.1 | 002.8+01.7 | 003.8+05.3 | 006.3+04.4 | 008.2+06.8 | 351.9-01.9 | 356.1-03.3 | 356.5-03.6 |
| PN name | Hen 2-262 | H 2-20 | H 2-15 | H 2-18 | Hen 2-260 | Wray 16-286 | H 2-26 | H 2-27 |
|
|
||||||||
| Dist [kpc] | 8 | 8 | 8 | 8 | 12 | 8 | 8 | 4 |
| Tbb [K] | 69 600 | 31 600 | 80 000 | 52 000 | 26 000 | 83 000 | 152 000 | 70 000 |
| L∗ [L⊙] | 2040 | 4070 | 130 | 1660 | 8130 | 7240 | 51 | 100 |
| Extinction constant | ||||||||
| C Hβ | 2.78 | 2.55 | 1.08 | 1.634 | 0.696 | 2.58 | 1.08 | 2.28 |
| log F(Hβ) corrected | ||||||||
| observed | −11.0 1 | −11.0 1 | −12.3 1 | −11.5 1 | −11.4 6 | −10.5 1 | −12.7 1 | −11.9 1 |
| pyCloudy | −11.0 | −11.1 | −12.2 | −11.6 | −11.3 | −10.5 | −12.7 | −12.0 |
| [N ii]6583/Hβ dered. | ||||||||
| observed | 0.33 3 | 2.81 7 | 5.88 7 | 0.08 4 | 1.06 6 | 0.59 1 | 6.21 7 | 1.58 1 |
| pyCloudy | 0.63 | 3.50 | 3.50 | 0.07 | 0.89 | 0.61 | 7.33 | 1.60 |
| [O iii]5007/Hβ dered. | ||||||||
| observed | 6.99 3 | 0.27 7 | 9.24 7 | 13.00 4 | 0.07 6 | 10.60 1 | 6.28 7 | 7.01 1 |
| pyCloudy | 7.33 | 0.42 | 6.02 | 5.24 | 0.15 | 14.30 | 4.60 | 5.58 |
| Chemical abundances | ||||||||
| log (N / H) | −4.18 3 | −3.40 7 | – | −4.21 4 | −4.35 6 | −3.73 2 | – | – |
| log (O / H) | −3.52 3 | −2.74 7 | −3.34 7 | −3.44 4 | −3.31 6 | −3.26 2 | −3.66 7 | – |
|
|
||||||||
| ionized mass [M⊙] | ||||||||
| Torun | – | 0.11 | 0.15 | 0.27 | 0.05 | 0.25 | 0.14 | 0.02 |
| pyCloudy | 0.057 | 0.053 | 0.039 | 0.051 | 0.038 | 0.097 | 0.027 | 0.019 |
| ⟨ Vexp ⟩ [km s-1] averaged by | ||||||||
| Hβ em. | 20.7 | 27.3 | 17.1 | 40.4 | 14.7 | 19.9 | 19.4 | 32.0 |
| mass | 24.3 | 38.7 | 21.4 | 57.3 | 21.4 | 25.7 | 25.1 | 38.7 |
| ⟨ Vexp ⟩ Torun [km s-1] | ||||||||
| – | 29 | 17 | 46 | 13 | 13 | 20 | 25 | |
| averaged ⟨ rout ⟩ [1016 cm] | ||||||||
| 12.28 | 13.65 | 21.77 | 16.32 | 9.52 | 10.03 | 25.92 | 18.64 | |
| kinematical age [kyr] | ||||||||
| Torun | – | 1.56 | 4.93 | 1.67 | 1.61 | 3.22 | 3.84 | 1.63 |
| nebula | 1.88 | 1.58 | 4.03 | 1.28 | 2.05 | 1.60 | 4.23 | 1.84 |
| lobe | 1.03 | 0.54 | 2.57 | 0.74 | 1.52 | 1.27 | 2.55 | 1.38 |
Notes. The Galactic bulge distances were assumed by default; however, for two cases there were reasons to locate them outside the bulge. The temperature and luminosity correspond to the central black-body ionizing source of the models. The extinction constants, line fluxes, and abundances were taken from the literature with the references indicated. The lower part of the table shows the results from computations of ionized masses, averaged expansion velocities, and kinematical ages. For a comparison (discussed in the text) the new values obtained with pyCloudy code and the old values from the published Torun models are given. The expansion velocity parameter is weighted by Hβ emission and by mass distribution, the old Torun values are only averaged by mass. The nebular outer radius is averaged by mass. The kinematical ages are “lobe” – the outer lobe radius divided by the velocity at this point and “nebula” – the mass averaged outer radius divided by Hβ averaged velocity.
Reference.
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