H¹³CN/SO₂ integrated intensity map toward IRS3A, whose emission appears to trace rotation within the inner disk. The panels correspond to low-, medium-, and high-velocity ranges. The following panel descriptions will be noted red (blue), corresponding to the Doppler shifted emission. The system velocity of the H¹³CN/SO₂ emission (∼5.4 km s⁻¹) agrees with system velocity of C¹⁷O, likely tracing H¹³CN emission and not SO₂ emission. Low velocity: velocity ranges 5.2 ﹩\to ﹩ 6.5 km s⁻¹ (4.1 ﹩\to ﹩ 5.2 km s⁻¹), contours start at 4σ (4σ) and iterate by 2σ (2σ) with the 1σ level starting at 0.0021 (0.0021) Jy beam⁻¹ for the red (blue) channels. Medium velocity: velocity ranges 6.5 ﹩\to ﹩ 7.4 km s⁻¹ (3.0 ﹩\to ﹩ 4.1 km s⁻¹), contours start at 4σ (4σ) and iterate by 2σ (2σ) with the 1σ level starting at 0.0016 (0.0016) Jy beam⁻¹ for the red (blue) channels. High velocity: velocity ranges 7.4 ﹩\to ﹩ 8.6 km s⁻¹ (1.8 ﹩\to ﹩ 3.0 km s⁻¹), contours start at 4σ (4σ) and iterate by 3σ (3σ) with the 1σ level starting at 0.0021 (0.0021) Jy beam⁻¹ for the red (blue) channels. The H¹³CN synthesized beam (0.″22 × 0.″14) is the bottom rightmost ellipse on each of the panels, and the continuum synthesized beam (0.″11 × 0.″05) is offset diagonally.