Velocity channel map of the CO(J = 2 → 1) emission from W43A. The contours indicate 5, 10, and 15 times the rms noise level of the maps, 8 × 10⁻⁴ Jy beam⁻¹. The numbers in the upper left corner correspond to the velocity offset with respect to the systemic velocity (34 km s⁻¹), V_offset, of the channel map. The vertical color wedge is in units of Jy beam⁻¹. The white cross is located at the position of the central bright dot that pinpoints the location of the star: (J2000) R.A. = 18^h47^m41.ˢ164, decl. = −1°45′11.″54. The blue ellipse located at the lower left corner indicates the synthesized beam, θ_FWHM = 0.″048 × 0.″031, PA = 75°.