Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035 [...] (K. Werner et al.)
- Published on 28 June 2011
Vol. 531In section 8. Stellar atmospheres
Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035, and related objects
This article presents the detection of FeVIII lines in PG 1159 stars, which are extremely hot hydrogen-deficient stars. This is the first detection of FeVIII in photospheric spectra of stars of any type. The estimated iron abundance is nearly solar unlike previous results, which deduced a strong iron deficit from the non-detection of FeVII in FUSE spectra.