Program: GS-2007B-Q-251

We present for the first time the spectrum of the central star of the planetary nebulae Th 2-A, which shows emission lines of ionized C and O, typical in Wolf-Rayet stars. Within the uncertainties of this observations at a 2.2m telescope, we classify it as of type [WO 2-3], which would be consistent with the high excitation of the nebula. There are only four WO stars known in our Galaxy (van der Hucht, 2001, Drew et al. 2004) and about twenty [WO] (Acker and Neiner 2003, Gesicki et al. 2006). The dynamical age of the nebula indicates that it is an old object, and a confirmation of the central star spectral type would yield useful constraints to the evolutionary models of the PNe-central star systems, a subject within the PhD research program of the co-I WW. Better spatial resolution and S/N would be required to confirm this finding, and a GMOS poor weather observation of 1.5 hour would be perfectly suited to conclude this study.