Pandey, G; Lambert, D. L; Simon, C. S; Kameswara Rao, N
(University of Chicago Press, 2006-02)
Abundances of about 18 elements including the heavy elements Y and Zr are determined from Hubble Space Telescope Space Telescope Imaging Spectrograph ultraviolet spectra of seven extreme helium stars (EHes): LSE 78, BD +10 ...