Radio continuum emission at 334 GHz. The color scale goes from 30 (about 3σ rms noise level) to 430 mJy beam⁻¹. The green contour levels are at 30, 50 (about 5σ rms noise level), 100, 150, 250, and 700 mJy beam⁻¹. The white contour corresponds to the 5σ rms noise level of the radio continuum emission at 93 GHz. The red filled circle indicates the position and extension (up to 3σ rms noise level) of the radio continuum emission at 1.3 cm detected by Rosero et al. (2016). The beam is indicated in the top right corner.