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Table 7
EW and V/R ratios of Balmer lines for five selected dates.
| Dates (MJD) | 52265 Dec. 22, 2001 | 55837 Oct. 03, 2011 | 56959 Oct. 29, 2014 | 58400 Oct. 09, 2018 | 59908 Nov. 25, 2022 |
|---|---|---|---|---|---|
| EW Hα (Å) | −1.15 | −11.4 | −8.7 | −28.7 | −36.1 |
| EW Hβ/Hα | 1.72 | 0.29 | 0.34 | 0.16 | 0.19 |
| EW Hγ/Hα | 1.79 | 0.24 | 0.31 | 0.11 | 0.09 |
| V/R Hα | 1.00 | 0.99 | 1.05 | 1.07 | 0.81 |
Notes. The five observation dates are marked with a gray vertical line in Fig. 4. The first row contains the EW values of Hα. The other rows show the ratio between the other Balmer lines and EW Hα.
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