Oxygen abundances in early B-stars

Details Oxygen abundances in early B-stars Oxygen abundances in early B-stars

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...351..168k&link_type=abstract

Astronomy and Astrophysics, v.351, p.168-176 (1999)

Astronomy and Astrophysics

Astrophysics

36

Atomic Processes, Line: Formation, Line: Profiles, Stars: Abundances, Stars: Atmospheres, Stars: Early-Type

Scientific paper

Kurucz atmospheric models and a modified version of the MULTI code are applied in a NLTE investigation of the O Ii 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. Based on spectra collected with the 1.52-m telescope of Haute Provence Observatoire

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