Table 3
Inventory of the spectral lines associated with the symbiotic activity.
| Element | λ [Å] | χu [eV] | Comment |
|---|---|---|---|
| H I | 8750.46 | 13.50 | Weak absorption |
| *6562.85 | 12.09 | ||
| *4861.34 | 12.75 | ||
| 4340.47 | 13.06 | ||
| 4101.75 | 13.22 | Blended by N III | |
| 3970.07 | 13.32 | Blended by Ca II | |
| 3889.06 | 13.39 | Blended by He I | |
| He I | 7065.18 | 22.72 | 3S1 |
| *6678.15 | 23.08 | 1S0 | |
| *5875.64 | 23.08 | 3S1 | |
| 5015.68 | 23.07 | 1S0 | |
| 4921.93 | 23.74 | 1S0 | |
| *4713.15 | 23.59 | Absorption | |
| 4471.48 | 23.74 | Absorption | |
| 4026.19 | 24.04 | Absorption | |
| *3964.73 | 23.74 | Absorption | |
| 3888.65 | 23.01 | Blended by H I | |
| He II | *4685.70 | 51.02 | |
| N III | 4634.14 | 33.13 | He II fluorescence |
| *4640.64 | 33.13 | He II fluorescence | |
| 4097.33 | 30.46 | Blended by H I | |
| O I | *8446.36 | 10.99 | Lyβ fluorescence |
| *7775.39 | 10.74 | Absorption | |
| *7774.17 | 10.74 | Absorption | |
| *7771.94 | 10.74 | Absorption | |
| [O III] | *5006.84 | 2.51 | |
| 4958.91 | 2.51 | ||
| 4363.21 | 5.35 | ||
| [Ne III] | *3868.76 | 3.20 | |
| Ca II | 8662.14 | 3.12 | Blended emission |
| 8498.02 | 3.15 | Blended emission | |
| 8542.09 | 3.15 | Blended emission |
Notes. Lines marked with * in front of their wavelengths λ have their phase-folded spectra displayed in Appendix C.1. χu is the upper energy level taken from the NIST database (https://physics.nist.gov/asd). The atomic configuration of the Helium lines, singlet 1S0 or triplet 3S1, in emission, is also given.
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