ON THE NATURE OF G25.5+0.2 - THE IRAS LOW-RESOLUTION SPECTRUM OF IRAS 18344-0632

The IRAS low-resolution spectrum of IRAS 18344-0632, which may be associated with the proposed (Cowan et al. 1989) very young supernova remnant G25.5 + 0.2, is presented. This spectrum shows a red continuum, and the 12.8 μm [Ne II] line, and is similar to the spectra of known H II regions and planetary nebulae. This, together with other results, suggests that IRAS 18344-0632 and G25.5 + 0.2 are associated, and are a planetary nebula not a young supernova remnant, although it is difficult to reconcile this identification with all available observations.