Radial velocity curve and ASAS-3 light curve. Top panel: best-fitting RV curve (phase diagram) obtained with a period of 107.699 days using our data (red symbols) and those published by Miroshnichenko et al. (2003, blue symbols). Circle symbols follow the orbital motion of the F-type star (photospheric lines), and asterisks are for Fe II emission lines. The horizontal line indicates the barycentric RV of the system, γ₀ = −29 km s⁻¹. Bottom panel: ASAS-3 light curve as a function of the orbital phase (see details in section 4.3). The zero phase was calculated using the epoch T_c, when the cool component is located between the observer and the hot component.