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Table 4
Balmer and He i decrements.
| Set | Ref. | Hα/Hβ | Hγ/Hβ | Hδ/Hβ | He iλ6678/λ4922 | He iλ5876/λ4471 | He iλ5876/λ6678 | Hβ/He iλ4922 |
|
|
||||||||
| 1980 | 1 | – | 0.66 | 0.53 | – | – | – | 8.37 |
| 1981 | 2 | 2.38 | 0.74 | 0.63 | 2.91 | 2.00 | 1.00 | 8.91 |
| 1986 | 3 | 1.54 | 0.58 | 0.46 | 1.16 | 2.69 | 1.57 | 5.47 |
| 1988 | 4 | – | – | – | – | – | 1.96 | – |
| 1992 | 3 | – | 0.71 | 0.64 | – | – | – | 6.03 |
| 1995 | 3 | – | 0.72 | 0.56 | – | – | – | 5.26 |
| 2005 | 3 | 2.03 | – | – | 2.63 | – | 1.54 | 13.07 |
Reference. (1) Young et al. (1981); (2) Williams (1983); (3) This paper; (4) Marsh (1990).
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