SIMBAD references

Spectra of the emission-line nebula G247.8+4.9 are presented in which an outstandingly high intensity of the lines [NII]λ6548,6583Å relative to Hα is observed. From the spectra we obtain E(B-V)≃0.7mag; with this value we deduce a lower limit for the distance of 6 kpc. The nebula appears to be located inside a cavity in the IRAS 60 and 100µm maps. This cavity could be a wind blown bubble formed by the progenitor star of the object. The most likely physical interpretation of the nebula is a supernova remnant, although other possibilities are discussed too.