Normalized difference line profile of Ca IIλ8662 in velocity space (black) after subtraction of a linear pseudo-continuum. The profile is double-peaked and strongly asymmetric, with the red peak being stronger (by about 10%) and being shifted to higher velocities (v_red peak ≈ +950 km s⁻¹) than the blue peak (v_blue peak ≈ −615 km s⁻¹). In addition, the red peak shows a “trident” structure, meaning, it is composed of three individual subpeaks. The width of the profile amounts to FWHM = (1920 ± 50) km s⁻¹. We show the best-fit results for the elliptical disk model (orange) and the residual flux (green).