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Table 2
Intensities of prominent emission lines relative to Hβ = 100 of V2468 Cyg.
| 2008 Oct. 09 | 2008 Nov. 13 | 2009 June 3 | 2009 Sep. 27/28 | ||||||
| λ obs | Identification | F(λ) | I(λ) | F(λ) | I(λ) | F(λ) | I(λ) | F(λ) | I(λ) |
|
|
|||||||||
| 3428.6 | [Ne V] 3425.8 | 120: | 303: | 210: | 528: | ||||
| 3586.3 | He I 3587.3, [Fe VII] 3587.2 | 11.5 | 25.6 | 19.4 | 43.4 | ||||
| 3725.8 | [O II] 3726.2, 3728.9 | 6.8 | 13.9 | 12.1 | 24.6 | ||||
| 3758.5 | [Fe VII] 3759.9 | 27.2 | 54.4 | 38.1 | 76.1 | ||||
| 3812.3 | He II 3813.5 | 6.8: | 13.1: | 15.9 | 30.7 | ||||
| 3835.7: | H I 3835.4 | 9.7 | 18.5 | 12.4: | 23.5: | ||||
| 3869.3 | [Ne III] 3868.7 | 68.4 | 127 | 61.2 | 114 | ||||
| 3892.6 | H I 3889.1, [Fe V] 3891.8,95.7 | 13.6: | 24.9: | 17.7 | 32.5 | ||||
| 3968.4 | Hϵ, [Ne III] 3967.5 | 30.0 | 52.8 | 26.7 | 47.0 | ||||
| 4073.0 | [Fe V] 4071.5, [S II] 4076.2 | 7.1 | 11.8 | 7.8 | 12.9 | ||||
| 4100.5 | Hδ, N III 4103.9, 4097.3 | 37: | 61: | 46: | 76: | 38: | 63: | 40: | 66: |
| 4196.9 | N III 4195.7 | ··· | ··· | ··· | ··· | 4.9 | 7.6 | 8.3 | 12.9 |
| 4338.9 | Hγ | 25: | 37: | 26: | 38: | 28: | 41: | 28: | 41: |
| 4362.8 | [O III] 4363.0 | 128 | 184 | 121 | 173 | 171 | 246 | 148 | 213 |
| 4473.5 | He I 4471.5, Mg II 4481.1 | 4.7 | 6.2 | 7.9 | 10.4 | 5.3 | 7.0 | 11.4 | 15.1 |
| 4519.4: | N III 4518.2, 4523.6 | 9.7 | 12.3 | 5.1 | 6.5 | 18.8 | 23.9 | 29: | 37: |
| 4606.9 | N II 4607.2 | 8.7 | 10.4 | 20.1 | 24.0 | 27.9 | 33.2 | 36.4 | 43.4 |
| 4638.9 | N III 4640.6, 41.9, N II 4643.1 | 64.5 | 75.1 | 82.2 | 95.8 | 76.0 | 88.4 | 76.6 | 89.2 |
| 4687.1 | He II 4685.7 | 31.9 | 36.0 | 23.0 | 25.9 | 71.2 | 80.1 | 84.4 | 95.0 |
| 4721.2: | [Ne IV] 4714.0, 4720.0 | 4.4: | 4.8: | 3.4: | 3.8: | 8.7 | 9.5: | 10.3: | 11.3: |
| 4861.7 | Hβ | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| 4933.5: | [O III] 4931.8, [Ca VII] 4938.6 | 3.0: | 2.9: | ··· | ··· | 9.3: | 8.8: | 17.1: | 16.3: |
| 4958.6 | [O III] 4958.9 | 127 | 119 | 154 | 144 | 348 | 327 | 388 | 365 |
| 5006.9 | [O III] 5006.8 | 400 | 364 | 504 | 459 | 1027 | 937 | 1104 | 1007 |
| 5046.8 | Si II 5041.1, 5056.0 | 8.9: | 7.9: | 4.7: | 4.2: | 7.5: | 6.7: | 8.7: | 7.8: |
| 5148.4 | [Fe VI] 5146.8 | 3.9 | 3.2 | ··· | ··· | 11.4: | 9.6: | 19.4 | 16.3 |
| 5174.9 | [Fe VI] 5177.0 | 12.7 | 10.5 | 6.1 | 5.1 | 26.3 | 21.8 | 33.4 | 27.6 |
| 5279.3 | [Fe VI] 5279.2, [Fe VII] 5276.1 | 4.7 | 3.7 | 4.4 | 3.4 | 17.3 | 13.5 | 27.1 | 21.1 |
| 5308.2 | [Ca V] 5308.9 | 5.6 | 4.3 | ··· | ··· | 23.1 | 17.7 | 27.7 | 21.3 |
| 5416.6 | He II 5411.5 | 3.9 | 2.8 | 2.6 | 1.9 | 11.2 | 8.1 | 16.9 | 12.2 |
| 5536.0 | N II 5535.4 | 3.0 | 2.0 | 4.1 | 2.8 | 2.4 | 1.6 | ··· | ··· |
| 5617.2 | [Ca VII] 5615.8 | ··· | ··· | ··· | ··· | 10.4 | 6.8 | 17.4 | 11.3 |
| 5676.9 | [Fe VI] 5678.0, N II 5679.6 | 20.2 | 12.8 | 22.1 | 14.0 | 15.4 | 9.8 | 19.1 | 12.1 |
| 5721.8 | [Fe VII] 5720.9 | ··· | ··· | ··· | ··· | 36.3 | 22.5 | 80.5 | 50.0 |
| 5754.1 | [N II] 5754.8 | 75.4 | 46.1 | 86.9 | 53.1 | 65.8 | 40.2 | ||
| 5802.7 | C IV 5801.5? | ··· | ··· | ··· | ··· | 11.2: | 6.7: | ||
| 5875.2 | He I 5875.6 | 33.1 | 19.1 | 38.5 | 22.3 | 25.7 | 14.9 | ||
| 5938.4 | N II 5940.3, 5941.7 | 5.5 | 3.1 | 6.5 | 3.6 | 3.1: | 1.6: | ||
| 6087.1 | [Fe VII] 6087.0, [Ca V] 6086.9 | 19.5 | 10.3 | ··· | ··· | 180 | 95 | ||
| 6308.4 | [O I] 6300.2, [S III] 6310.2 | 12.1 | 5.9 | 8.5 | 4.1 | 10.9 | 5.3 | ||
| 6369.9 | [O I] 6363.9, Si II 6371.4 | 13.0: | 6.2: | 6.4: | 3.0: | 8.8 | 4.1 | ||
| 6433.1: | [Ar V] 6434.9 | ··· | ··· | ··· | ··· | 5.9: | 2.7: | ||
| 6482.4: | N II 6482.1 | 4.1: | 1.9: | 5.2: | 2.3: | 10.0: | 4.5: | ||
| 6563.4 | Hα | 840 | 369 | 847 | 372 | 804 | 354 | ||
| 6593.3 | [N II] 6583.6, [Fe VII] 6599.1 | ··· | ··· | ··· | ··· | 13.0: | 5.6 | ||
| 6678.4 | He I 6678.1 | 12.8 | 5.4 | 13.2 | 5.6 | 10.8 | 4.6 | ||
| 6743.4 | C II 6750.2, 6738.4 | 7.8 | 3.2 | ||||||
| 7006.1 | [Ar V] 7006.3 | 25.0 | 9.5 | ||||||
| 7064.3 | He I 7065.2 | 24.8 | 9.2 | ||||||
| 7139.3 | [Ar III] 7135.8 | 35.1 | 12.8 | ||||||
| 7325.5 | [O II] 7319.4, 7330.7 | 42.0 | 14.5 | ||||||
| 7586 | He II 7592? | 18.1 | 5.8 | ||||||
| 7715 | unid. | 48.4 | 15.0 | ||||||
|
|
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| Hβ | 10-12 erg cm-2 s-1 | 2.89 | 34.0 | 2.81 | 33.0 | 0.572 | 6.71 | 0.289 | 3.40 |
Notes. F(λ): measured fluxes. I(λ): intensities corrected for E(B − V) = 0.77.
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