We have obtained 175 spectral types for stars in 30 Doradus of which 105 are new. The total number of stars with spectral classification is now 261, which allows a thorough spectrophotometric analysis of the region. We have used the [OIII] nebular lines to reduce the contamination effects of the ionised nebula to the stellar spectra, improving the reliability of the spectral classification from ground based spectroscopy. Our spectral classification is good to about subtypes. The spatial distribution of spectral types suggests the presence of a later type group 2' south of R136. The radial distribution of stars according to the masses estimated from their spectral types shows a more compact distribution for the most massive stars, indicating the existence of mass segregation in the cluster.
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