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Table 4

Metallicity estimates.

Star d R(kpc) Zpn Zhii Zhiib Zcp
[kpc] [kpc]

WR128 4.30 7.03 1.05 0.97 1.07 1.13
WR18 3.30 8.37 0.88 0.85 0.81 0.95
WR10 4.60 11.19 0.60 0.64 0.65 0.66
WR7 4.80 11.30 0.52 0.57 0.60 0.65

Notes.Z represents the metallicity. Zpn is obtained from from Planetary Nebulae; Zhii and Zhiib from HII regions (see text for discussion); Zcp from cepheids. It is expressed in oxygen abundance assuming 12+log(O/H) = 8.66 for the Sun (Grevesse et al. 2007) for planetary nebulae and HII regions, and in iron abundance for cepheids.

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