SIMBAD references

We present the first quantitative analysis of a M 33 Wolf-Rayet star, the Ofpe/WN9 candidate MCA1-B (Willis et al. 1992). From new higher resolution observations analysed with the Wolf-Rayet standard model, we reclassify MCA1-B as WN9 and find its stellar parameters (T_*=29kK, T_eff=19kK, log L/L_☉=5.8, log {dot}(M)/M_☉/yr=-4.0, v_∞=420km/s) to be very similar to the LMC WN9 stars (Crowther et al. 1995a), and R84 in particular. Chemical abundances (H/He=2.6, N/He=0.003, C/N<0.1) are also comparable to R84 indicating a similar evolutionary status (probable dormant LBV) and metallicity (Z∼0.008) consistent with its location in the outer regions of M 33.