SRT image of the Kes 73 field at 24.7 GHz. Magenta circles indicate the H II regions catalogued in Anderson et al. (2014). Cyan circles correspond to two SNR candidates proposed by Anderson et al. (2017). The mid-IR bubble N46 (Dewangan et al. 2016) is indicated by a yellow circle, and the white diamond gives the position of the W–R star 1503-160L. We also indicate the extraction region of Kes 73 in its entirety (orange circle) and its bright region (polygon; see Sect. 5.1).