Oxygen abundances in early B-stars *
S.A. Korotin 1,
S.M. Andrievsky 1 and
R.E. Luck 2
Received 29 April 1999 / Accepted 16 September 1999
Kurucz atmospheric models and a modified version of the MULTI code are applied in a NLTE investigation of the OII spectrum. It is shown that previously performed analyses based on the use of lightly line-blanketed Gold models give results that are in variance with those based on the use of the more heavily blanketed Kurucz models.
One result of our calculations is a number of useful relationships between the NLTE oxygen abundance, line equivalent width, and stellar atmospheric parameters.
A NLTE analysis of O II lines in a sample of hot main sequence B stars has been performed. The derived oxygen abundances for the program stars appear to be subsolar. A brief comparison is presented between the oxygen abundance in B stars and other related stellar types.
Key words: atomic processes line: formation line: profiles stars: abundances stars: atmospheres stars: early-type
Send offprint requests to: S.A. Korotin
© European Southern Observatory (ESO) 1999
Online publication: November 2, 1999