Expected evolution of the binary system PTF J2238+743015.1

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Table 1.

Estimated properties of the binary system PTF J2238 at the current epoch.

Orbital parameters		Accretor		Donor
P [min.]	76.4	M_WD [M_⊙]	0.75	M_sdB [M_⊙]	0.390
A [R_⊙]	0.6208	R_WD [10⁻² R_⊙]	1.082	R_sdB [R_⊙]	0.1851
$q = \frac{M_{sdB}}{M_{WD}}$ $q={\frac{M_{\mathrm{sdB}}}{M_{\mathrm{WD}}}}$	0.52	T_eff [K]	26 281	T_eff [K]	23 650
		L [L_⊙]	0.050	L [L_⊙]	9.652
				log(g)	5.48

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