News
07.07.2011
First detection of Fe-VIII in photospheric spectra of stars
A&A Highlight in July 2011
"Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035, and related objects" (K. Werner, T. Rauch. J.W. Kruk, and R.L. Kurucz, <link http: www.aanda.org>A&A 531, A146)
This article presents the detection of Fe-VIII lines in PG 1159 stars, which are extremely hot hydrogen-deficient stars. This is the first detection of Fe-VIII 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 Fe-VII in FUSE spectra.
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