Description of source "g18" from Chambers et al. (2011)

Another foreground source, g18, is found toward the HII region RCW 141. This enhanced 4.5 µm source appears orange in Figure 18, and has a mass of 14.0 ± 4.3 M_0. It is found within a filamentary IRDC and is associated with 24 µm emission. While not detected in our data, a 6.7 GHz maser was detected by C10 positionally coincident with g18. The 6.7 GHz spectrum of this source displays several velocity features from 9 to 17 km s-1. No 44 GHz maser is detected toward g18.