LkHα 330 profile (black) and its reflection (blue) showing asymmetric structure. The velocity ranges covering the low-J v = 1−0 telluric lines are indicated in red. The horizontal black line indicates the instrumental resolution of the observation. The core of the line and the wings reveal a significant asymmetry. The half-width at zero intensity (HWZI) of the blue side of the line occurs near −20 km s⁻¹, while the HWZI of the red side of the line falls near +30 km s⁻¹. The core of the line shows an asymmetry in the opposite direction.