Chemical composition of Galactic OB stars. I. CNO abundances in O9 stars
We present NLTE abundances of CNO for a sample of four O9 stars in the Galaxy, together with new determinations of their stellar parameters, T_eff, log g, epsilon (He) and microturbulence. These new analyses take into account the effect of line-blocking in the spectral synthesis with our classical NLTE, plane-parallel and hydrostatic model
Villamariz, M. R. et al.
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2002