Bibcode
                                    
                            Herrero, A.
    Bibliographical reference
                                    Space Science Reviews, Volume 66, Issue 1-4, pp. 137-145
Advertised on:
    
                        3
            
                        1993
            
  Journal
                                    
                            Citations
                                    28
                            Refereed citations
                                    27
                            Description
                                    We present the results of our observations of stars of type O5 and
earlier and show that inclusion of the line blocking between 228 and 912
A solves the problem found by Herrero et al. (1992) in the determination
of their stellar parameters. We study the influence of the line blocking
and other effects on the mass and helium discrepancies and show that the
first one is reduced by the use of spherical, non hydrostatic model
atmospheres and that the second one is probably due to exposure of CNO
material.