Table 1
IRS spectra of the four nebulae.
| NGC 1535 | NGC 1535 | Tc1 | Tc1 | He2-108 | He2-108 | NGC 6629 | NGC 6629 | ||
| Identification | λ(μm) | Intensity(†) | I/Hβ | Intensity(†) | I/Hβ | Intensity(†) | I/Hβ | Intensity(†) | I/Hβ |
|
|
|||||||||
| F | 6.48 | 198 ± 27 | 3.2 | ||||||
| [Ni ii] ? | 6.63 | 76.5 ± 8 | 1.24 | ||||||
| [Ar ii] | 7.026 | 2020 ± 70 | 32.8 | ||||||
| H i (6-5) | 7.47 | 36.2 ± 2.1 | 230 ± 17 | 40.7 ± 4.8 | 306 ± 29 | ||||
| F | 7.757 | 37.2 ± 13 | 0.44 | ||||||
| F | 8.497 | 384 ± 10 | |||||||
| [Ar iii] | 8.99 | 76.5 ± 4.3 | 3.32 | 399 ± 16 | 6.50 | 299 ± 13 | 25 | 1080 ± 45 | |
| [S iv] | 10.512 | 915 ± 35 | 39.8 | 29.2 ± 2.2 | 0.47 | 41.0 ± 2.4 | 3.6 | 1220 ± 46 | 14.4 |
| H i (9-7) | 11.305 | 20.6 ± 3 | 32.4 ± 2.3 | ||||||
| [Cl iv] | 11.763 | 10.5 ± 1.9 | 0.455 | ||||||
| H i (7-6+11-8) | 12.375 | 22.4: ± 2.1 | 67.9 ± 3.6 | 11.7 ± 1.2 | 95.8 ± 4.3 | ||||
| [Ne ii] | 12.81 | 9.55 ± 1.9 | 0.415 | 2301 ± 200 | 37.5 | 1175 ± 130 | 102 | 839 ± 19 | 102 |
| [Ne iii] | 15.555 | 1920 ± 40 | 83.5 | 89.5 ± 5 | 1.46 | 189 ± 6 | 16.5 | 7530 ± | 89.1 |
| F | 17.66 | 35 ± 12 | 3 | ||||||
| [P iii] | 17.88 | 51 ± 2.3 | 0.61 | ||||||
| [S iii] | 18.714 | 67.4 ± 3.3 | 2.93 | 863 ± 80 | 14.0 | 830 ± 150 | 72.2 | 1540 ± 32 | 18.2 |
| [Cl iv] | 20.316 | 10.8 ± 0.9 | 0.47 | ||||||
| [Ar iii] | 21.820 | 7.44 ± 0.73 | 0.323 | 26.6 ± 2 | 0.432 | 19.4 ± 2 | 1.69 | 85.4 ± 6.9 | 1.01 |
| [Fe iii] | 22.92 | 18.1 ± 1.6 | 0.295 | 11.7 ± 0.7 | 1.02 | ||||
| [O iv] | 25.889 | 2466 ± 21 | 107 | ||||||
| [S iii] | 33.48 | 63.2 ± 1.9 | 2.75 | 382 ± 33 | 6.21 | 402 ± 18 | 35.0 | 807 ± 34 | 6.3 |
| [Ne iii] | 36.013 | 203 ± 2.2 | 8.84 | 531 ± 24 | 6.3 | ||||
Notes. The measured line intensity is given in Cols. 3, 5, 7 and 9. Columns 4, 6, 8 and 10 give the ratio of the line intensity to Hβ(=100).
Intensities measured in units of 10-14 erg cm-2 s-1. The intensities SH measurements (below 19 μm) and the SL measurements have been increased by a factor to bring them all to the scale of the LH measurements. The factors used are given in text. Lines identified by “F” are related to the Fullerine molecule (2010).
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