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Table 9.

Parameters of the WD pseudophotosphere, LWD (1037 erg s−1), (R⊙), TWD (105 K) and ṀWD (10−6 M⊙ yr−1) along the 2018 outburst of V426 Sge (see Sects. 3.2.2–3.2.4).

Date LWD TWD ṀWDṀWD
2018/08/10.845 6.8 ± 0.7 0.070 ± 0.004 2.53 ± 0.13 2.36
2018/08/11.826 7.3 ± 0.8 0.079 ± 0.005 2.41 ± 0.12 2.67
2018/08/13.814 6.0 ± 0.7 0.101 ± 0.006 2.03 ± 0.12 3.00
2018/08/13.827 6.5 ± 0.7 0.087 ± 0.006 2.23 ± 0.12 2.75
2018/08/15.853 6.7 ± 0.7 0.071 ± 0.005 2.49 ± 0.13 2.37
2018/08/17.070 6.5 ± 0.7 0.077 ± 0.005 2.37 ± 0.13 2.50
2018/08/17.896 5.8 ± 0.7 0.099 ± 0.006 2.03 ± 0.12 2.92
2018/08/18.823 6.2 ± 0.7 0.091 ± 0.006 2.15 ± 0.12 2.80
2018/08/19.842 4.8 ± 0.6 0.079 ± 0.006 2.18 ± 0.12 2.27
2018/08/20.869 5.6 ± 0.6 0.118 ± 0.007 1.85 ± 0.11 2.71
2018/08/22.840 4.8 ± 0.6 0.114 ± 0.007 1.81 ± 0.11 2.47
2018/08/27.796 3.9 ± 0.5 0.107 ± 0.006 1.77 ± 0.10 2.15
2018/09/07.867 3.0 ± 0.5 0.111 ± 0.006 1.63 ± 0.09 2.00
2018/09/19.821 2.6 ± 0.4 0.099 ± 0.006 1.66 ± 0.09 1.71
2018/09/20.837 2.4 ± 0.4 0.108 ± 0.006 1.56 ± 0.08 1.78
2018/10/04.840 1.9 ± 0.4 0.103 ± 0.006 1.50 ± 0.09 1.56
2018/10/05.724 1.9 ± 0.4 0.085 ± 0.006 1.67 ± 0.09 1.36
2018/10/10.788 1.7 ± 0.3 0.075 ± 0.005 1.73 ± 0.10 1.18
2018/10/11.835 1.6 ± 0.4 0.086 ± 0.006 1.59 ± 0.09 1.28
2018/10/16.713 1.6 ± 0.3 0.091 ± 0.006 1.53 ± 0.07 1.31
2018/10/18.797 1.7 ± 0.3 0.067 ± 0.005 1.84 ± 0.11 1.09
2018/10/20.757 1.7 ± 0.3 0.072 ± 0.005 1.75 ± 0.10 1.13
2018/11/10.773 1.4 ± 0.3 0.062 ± 0.005 1.82 ± 0.10 0.95
2018/11/12.803 1.3 ± 0.2 0.074 ± 0.004 1.62 ± 0.09 1.04
2018/11/23.729 1.3 ± 0.2 0.063 ± 0.004 1.75 ± 0.10 0.91
2018/12/17.701 0.7 ± 0.1 0.043 ± 0.003 1.82 ± 0.11 0.52
From Swift-UVOT/optical SED models
2018/08/28.722 5.4 ± 0.6 0.128 ± 0.008 1.76 (a) –
2018/09/11.451 2.9 ± 0.4 0.107 ± 0.007 1.64 (a) –
2018/09/18.101 3.4 ± 0.5 0.116 ± 0.007 1.65 (a) –
2018/10/06.440 4.7 ± 0.6 0.133 ± 0.008 1.67 (a) –
2019/03/03.179 0.89 ± 0.13 0.071 ± 0.005 1.50 (b) –

Notes.

(a)

Interpolated value to dates of Swift-UVOT observations,

(b)

Adopted value.

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