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Table 4

Summary of our calculations as described in Sect. 4.1.

System Esec/erg ΔEmin/Esec ΔE/Esec ΔE/Esec ΔE/Esec ΔEmin/Esec δmin
Applegate (1992) Tian et al. (2009) This paper
(see Eq. (5)) (see Eq. (7)) Const.dens. Two-zone Full model
HS 0705+6700 2.2 × 1039 6.7 7.3 3,300 140 140 0.73
HW Vir 2.0 × 1040 4.9 6.0 720 108 104 0.72
NN Ser 2.7 × 1039 3.2 3.3 1100 64 64 0.73
NSVS14256825 8.3 × 1038 5.3 5.4 3200 101 102 0.73
NY Vir 1.4 × 1039 5.5 5.6 2800 106 106 0.73
HU Aqr 1.4 × 1040 0.10 0.10 240 1.9 1.9 0.732
QS Vir 3.0 × 1040 0.039 0.040 170 0.71 0.77 0.71
RR Cae 5.2 × 1039 2.8 2.9 560 59 59 0.73
UZ For 4.1 × 1039 0.14 0.15 360 2.7 2.7 0.73
DP Leo 2.9 × 1039 0.021 0.021 150 0.38 0.38 0.74
V471 Tau 2.0 × 1042 0.014 0.014 12 0.26 0.26 0.84
RU Cnc 5.7 × 1043 0.074 0.076 1.7 – – –
AW Her 8.5 × 1042 608 618 270 – – –
HR 1099 3.7 × 1043 0.21 0.22 10 – 6.7 0.64
BX Dra 3.5 × 1043 0.00016 0.00016 0.92 0.0029 0.056 0.52
SZ Psc 9.9 × 1043 0.12 0.13 4.7 – 4.84 0.61

Notes. The ratios ΔEmin/Esec denote the energy required to drive an Applegate mechanism of the observed magntiude over the available energy produced by the secondary star. The parameter δmin denotes the ratio of core radius to secondary star radius for which the minimum energy is obtained in the numerical model. The dash denotes imaginary values implying that no physical solution exists, as discussed in Sects. 3.4 and 4.1.

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